- 1 Synthesis
- 1.1 Learning
- 1.2 Elements
- 1.3 Methods
- 1.4 Hardware
- 1.5 Control voltage / gate & trigger
- 1.6 Modular hardware
- 1.7 DIY
- 1.8 Hybrid modular
- 1.9 Virtual Analogue
- 1.10 Patching / programming
- 1.11 Noise
- 1.12 Chiptune
- 2 Graphics synthesis
- 3 Hardware DSP
- 4 PC Speaker
- 5 Modular softsynths
- 5.1 gAlan
- 5.2 AlsaModularSynth
- 5.3 ams-lv2
- 5.4 avw.lv2
- 5.5 Fomp
- 5.6 controlfilter.lv2
- 5.7 Omnifono
- 5.8 BLOP
- 5.9 Omins
- 5.10 SpiralSynthModular
- 5.11 vModSynth
- 5.12 Zyne
- 5.13 Synth-A-Modeler
- 5.14 TX Modular
- 5.15 SynthForge
- 5.16 VCV Rack
- 5.17 Axiom
- 5.18 XODULAR
- 5.19 Automatonism
- 5.20 Twist
- 5.21 PatchScript / MidiPatch
- 5.22 Flow
- 5.23 Moselle
- 5.24 Windows
- 6 Drum synths
- 6.1 Geonkick
- 6.2 Stegosaurus
- 6.3 DrumSynth
- 6.4 Rudolf 556
- 6.5 Smack
- 6.6 KickMaker
- 6.7 Beatfox
- 6.8 Kickblast
- 6.9 mbass
- 6.10 Windows VST
- 6.10.1 QuirQuiQ
- 6.10.2 Freqatic
- 6.10.3 Drumatic VE
- 6.10.4 CM-505
- 6.10.5 TS-808
- 6.10.6 ES DGenR8
- 6.10.7 TW-Opkicker
- 6.10.8 TW-Percussion1
- 6.10.9 DC Bazz::Murda
- 6.10.10 EXD-80
- 6.10.11 KICKWOrK
- 6.10.12 Drumatic 3
- 6.10.13 ErsDrums
- 6.10.14 Kick Me Too
- 6.10.15 Psy-Drums
- 6.10.16 Optik
- 6.10.17 DR-Fusion V2
- 6.10.18 daBUMZ
- 6.10.19 easy-toolz.de drums
- 7 Softsynths
- 7.1 ZynAddSubFX
- 7.2 Yoshimi
- 7.3 Helm
- 7.4 Sorcer
- 7.5 Surge
- 7.6 Crazynth
- 7.7 sfxr
- 7.8 Bfxr
- 7.9 Jfxr
- 7.10 rogue
- 7.11 Bristol Collection
- 7.12 Digits
- 7.13 nekobee / Nekobi
- 7.14 Minaton
- 7.15 triceratops
- 7.16 WhySynth
- 7.17 Wolpertinger
- 7.18 Add64
- 7.19 DIN Is Noise
- 7.20 NoiseScaper
- 7.21 PHASEX
- 7.22 amsynth
- 7.23 Sineshaper
- 7.24 Mx44
- 7.25 Newtonator
- 7.26 Obxd
- 7.27 OB-Xd
- 7.28 synthv1
- 7.29 padthv1
- 7.30 rt_lpc
- 7.31 SO-404 / SO-KL5 / SO-666
- 7.32 Synister
- 7.33 Peggy 2000
- 7.34 Paraphrasis
- 7.35 Vex
- 7.36 Xsynth
- 7.37 RTSynth
- 7.38 Wsynth
- 7.39 slat
- 7.40 DX-10 / JX-10
- 7.41 WatSyn
- 7.42 TAL Noisemaker
- 7.43 Xiph
- 7.44 RaffoSynth
- 7.45 Minicomputer
- 7.46 Tunefish
- 7.47 Sprike
- 7.48 Mr. Alias 2
- 7.49 Digits
- 7.50 reSID
- 7.51 Rave Generator VST
- 7.52 Happychords
- 7.53 Qin
- 7.54 lv2_guitar
- 7.55 CT-Synth
- 7.56 Psychosynth
- 7.57 GuitarSynth
- 7.58 bytes
- 7.59 reasonablesynth.lv2
- 7.60 fastbreeder
- 7.61 munt
- 7.62 andes
- 7.63 GuitarSynth-DPF
- 7.64 Diodow
- 7.65 Tranzistow
- 7.66 super_welle
- 7.67 Sigmatizm
- 7.68 StkDekrispatorSynthesizer
- 7.69 jackpunkconsole
- 7.70 punk-console.lv2
- 7.71 Xhip Follower
- 7.72 wigwamjam
- 7.73 Xephys
- 7.74 Cloud Generator
- 7.75 ZamSynth
- 7.76 Cadmium
- 7.77 AirSynth
- 7.78 Xmonk.lv2
- 7.79 Signal Generator
- 7.80 Frequency modulation
- 7.81 Chiptune
- 7.82 Organ
- 7.83 Windows VST
- 7.83.1 SQ8L
- 7.83.2 Synth1
- 7.83.3 Bleep
- 7.83.4 u-he Zebralette
- 7.83.5 u-he Podolski
- 7.83.6 u-he TyrellN6
- 7.83.7 u-he Hive
- 7.83.8 u-he Triple Cheese
- 7.83.9 deputy Mark II
- 7.83.10 Charlatan
- 7.83.11 Venom VB-303
- 7.83.12 Caustic 3
- 7.83.13 Defiant WT
- 7.83.14 metamorph
- 7.83.15 GalaXynth
- 7.83.16 Scylla
- 7.83.17 Oatmeal
- 7.83.18 X11
- 7.83.19 Harmony Box
- 7.83.20 basic65
- 7.83.21 Preparation P
- 7.83.22 SmallQoo
- 7.83.23 Metatron
- 7.83.24 Photon
- 7.83.25 Subconscious
- 7.83.26 ProtoPSG psg-005
- 7.83.27 NoteGraphica
- 7.83.28 blooo
- 7.83.29 scrooo
- 7.83.30 qyooo
- 7.83.31 Ragnarök
- 7.83.32 Nabla
- 7.83.33 Deputy
- 7.83.34 Kern
- 7.83.35 Mono/Fury
- 7.83.36 ModulAir
- 7.83.37 Formant Classic Advanced
- 7.83.38 TS-Substance
- 7.83.39 TW-PitchShop
- 7.83.40 TW-WhiteWidow
- 7.83.41 TW-PVM Special
- 7.83.42 Eclipsis
- 7.83.43 U.F.O. ZE
- 7.83.44 Charlatan
- 7.83.45 The Viking
- 7.83.46 2032
- 7.83.47 Transformer
- 7.83.48 Mika Micro
- 7.83.49 OwlBass
- 7.83.50 ODOsynths archive
- 7.83.51 Dream 64
- 7.83.52 Harsh Digital Nose
- 7.83.53 Chip32
- 7.83.54 DvnSfxMaker
- 7.83.55 SANA 8BIT VST
- 7.83.56 GSinth
- 7.83.57 GSinth2
- 7.83.58 Little Spiral Generator
- 7.83.59 Rhythm and Pitch Generator
- 7.83.60 MetaSynth
- 7.84 Command-line
- 7.85 WebSynths
- 7.86 Android
- 7.87 DOS
- 7.88 Various
- 7.89 Modelled instruments
- 8 Granular synthesis
- 8.1 Argotlunar
- 8.2 Soundgrain
- 8.3 Slicer
- 8.4 Hadron Particle Synthesizer
- 8.5 Narrativas Sonoras
- 8.6 Borderlands
- 8.7 Cumulus
- 8.8 Loomer Cumulus
- 8.9 Frontieres
- 8.10 cassetter
- 8.11 Windows / Mac
- 9 Concatenative synthesis
- 10 Algorythmic
todo; touch-ups, more links, more text
- https://en.wikipedia.org/wiki/Synthesizer - often abbreviated as synth, is an electronic musical instrument that generates audio signals that may be converted to sound. Synthesizers may imitate traditional musical instruments such as piano, flute, vocals, or natural sounds such as ocean waves; or generate novel electronic timbres. They are often played with a musical keyboard, but they can be controlled via a variety of other devices, including music sequencers, instrument controllers, fingerboards, guitar synthesizers, wind controllers, and electronic drums. Synthesizers without built-in controllers are often called sound modules, and are controlled via USB, MIDI or CV/gate using a controller device, often a MIDI keyboard or other controller.
Synthesizers use various methods to generate electronic signals (sounds). Among the most popular waveform synthesis techniques are subtractive synthesis, additive synthesis, wavetable synthesis, frequency modulation synthesis, phase distortion synthesis, physical modeling synthesis and sample-based synthesis.
- MATRIXSYNTH - everything synth
- Synthtopia - a portal devoted to electronic music.
- LinuxSynths.com - includes reviews of synths plus many patch files
- Synth Zone is an attempt to ease the search for synth resources on the Internet . If you can't find links to the information or resources here then please check out the full list of synth sites on Synth Zone's Synth Sites Links & Resources page.
- How Do Synths Work? An Introduction to Audio Synthesis by Lech Szczepaniak
- A Young Person's Guide to the Principles of Music Synthesis by Beau Sievers
- Advanced Programming Techniques for Modular Synthesizers - intended to provide the advanced user of the Clavia Nord Modular synthesizer with a toolbox of techniques for creating complex and interesting patches. Although the emphasis is on the Nord Modular, the techniques described in this document can be applied to any modular synthesizer, from a modular Moog to the Native Instruments Reaktor softsynth.
- The Synthesizer Academy - a site dedicated to help you learn about synthesis and the creation of electronic music. If you’re looking for a synthesizer tutorial, this is the site for you! You can either start at the very beginning and work your way through each lesson one-by-one, or use the red bar at the top to jump in wherever you want. We’ll also be adding links to various synth resources to help you learn more and get your hands on some gear to play with. New lessons will be added frequently, so check back often.
- Welsh's Synthesizer Cookbook - Universal patch book, Sound analysis/reverse engineering, Synthesizer programming basics. $19.95 US on Amazon and eBay (follow "purchase" link on left). Includes the full Kitchen Kits sample pack.
- YouTube: once upon a synth - channel
- YouTube: Modular Synthesis (Part 1) - Studio Time: S2E9 - Junkie XL
- https://en.wikipedia.org/wiki/Oscillation - the repetitive variation, typically in time, of some measure about a central value (often a point of equilibrium) or between two or more different states.
- https://en.wikipedia.org/wiki/Voltage-controlled_filter - VCF - shapes the sound generated by the oscillators in the frequency domain, often under the control of an envelope or LFO. These are essential to subtractive synthesis.
- https://en.wikipedia.org/wiki/Low-frequency_oscillation - LFO - The primary oscillator circuits of a synthesizer are used to create the audio signals. A LFO is a secondary oscillator that operates at a significantly lower frequency (hence its name), typically below 20 Hz. This lower frequency or control signal is used to modulate another component's value, changing the sound without introducing another source.
- https://en.wikipedia.org/wiki/Analog_synthesizer - a synthesizer that uses analog circuits and analog signals to generate sound electronically. The earliest analog synthesizers in the 1920s and 1930s, such as the Trautonium, were built with a variety of vacuum-tube (thermionic valve) and electro-mechanical technologies. After the 1960s, analog synthesizers were built using operational amplifier (op-amp) integrated circuits, and used potentiometers (pots, or variable resistors) to adjust the sound parameters. Analog synthesizers also use low-pass filters and high-pass filters to modify the sound. While 1960s-era analog synthesizers such as the Moog used a number of independent electronic modules connected by patch cables, later analog synthesizers such as the Minimoog integrated them into single units, eliminating patch cords in favour of integrated signal routing systems.
- https://en.wikipedia.org/wiki/Digital_synthesizer - a synthesizer that uses digital signal processing (DSP) techniques to make musical sounds. This in contrast to older analog synthesizers, which produce music using analog electronics, and samplers, which play back digital recordings of acoustic, electric, or electronic instruments. Some digital synthesizers emulate analog synthesizers others include sampling capability in addition to digital synthesis.
- YouTube: Inside Synthesis - FM Synthesis - intro to the basics
- YouTube: FM Synthesis: How does it work? - Benn Jordan (The Flashbulb)
- YouTube: https://www.youtube.com/watch?v=EPADttG4GK0&list=PL0vtbEar5pJYZ7U0dNgvVh8-loYUPKv2T The Power of FM Workshop] - playlist, using Dexed
- PDF: FM Theory & Applications - Dr. John Cowning and David Bristow, 1986
- PDF: Basic FM Synthesis on the Yamaha DX7 - Mark Phillips, 1987
- PDF: How To Program The DX7 - 1985
- https://en.wikipedia.org/wiki/Additive_synthesis - a sound synthesis technique that creates timbre by adding sine waves together. The timbre of musical instruments can be considered in the light of Fourier theory to consist of multiple harmonic or inharmonic partials or overtones. Each partial is a sine wave of different frequency and amplitude that swells and decays over time. Additive synthesis most directly generates sound by adding the output of multiple sine wave generators. Alternative implementations may use pre-computed wavetables or the inverse Fast Fourier transform.
It’s difficult to go very far with additive synthesis using analog hardware. Each wave needs its own oscillator, and to get sounds that are very complex, it requires quite a few of them. This can get very bulky and expensive rather quickly. Most sounds found in nature would require hundreds or even thousands of sine waves to accurately reproduce them. Digital synthesizers make it easier to do additive synthesis. All the waves are just numbers in a computer, so you can add as many as you want if you have enough processing power.
Despite this potential complexity, simple additive synthesis is possible on quite modest analogue synths. So is 'sinusoids plus noise' synthesis. Indeed, I guarantee that anybody playing an instrument with two or more independently tuneable oscillators (and, maybe, a noise source) has created sounds employing tuned fifths, octaves, or whatever. As soon as you have done this, you've entering the weird and wonderful world of additive synthesis. So go and find a handful of extra oscillators, and get serious. Additives can be good for you, and it's great fun, I promise.
Wavetable / sample
See also Sampling
- https://en.wikipedia.org/wiki/Table-lookup_synthesis or wavetable-lookup synthesis is a class of sound synthesis methods using the waveform tables by table-lookup, called "table-lookup oscillator" technique. The length of waveforms or samples may be varied by each sound synthesis method, from a single-cycle up to several minutes.
- https://github.com/sneakernets/DMXOPL - New and improved DMX GENMIDI for Doom and sourceports, taking full advantage of the OPL3 waveforms. This takes things up a notch in terms of timbre.
Physical modelling synthesis
- https://en.wikipedia.org/wiki/Digital_waveguide_synthesis -the synthesis of audio using a digital waveguide. Digital waveguides are efficient computational models for physical media through which acoustic waves propagate. For this reason, digital waveguides constitute a major part of most modern physical modeling synthesizers.
- Yamaha VL1: Virtual Acoustic Synthesizer - Is 'physical modelling' set to become the buzz-phrase of '90s synthesis? MARTIN RUSS exclusively tests out Yamaha's innovative new synth and reveals all... Published in SOS July 1994.
- https://en.wikipedia.org/wiki/Banded_waveguide_synthesis - a physical modelling synthesis method to simulate sounds of dispersive sounding objects, or objects with strongly inharmonic resonant frequencies efficiently. It can be used to model the sound of instruments based on elastic solids such as vibraphone and marimba bars, singing bowls and bells. It can also be used for other instruments with inharmonic partials, such as membranes or plates. For example, simulations of tabla drums and cymbals have been implemented using this method. Because banded waveguides retain the dynamics of the system, complex non-linear excitations can be implemented. The method was originally invented in 1999 by Georg Essl and Perry Cook to synthesize the sound of bowed vibraphone bars (Essl Cook 1999).
- https://en.wikipedia.org/wiki/Karplus–Strong_string_synthesis - a method of physical modelling synthesis that loops a short waveform through a filtered delay line to simulate the sound of a hammered or plucked string or some types of percussion. At first glance, this technique can be viewed as subtractive synthesis based on a feedback loop similar to that of a comb filter for z-transform analysis. However, it can also be viewed as the simplest class of wavetable-modification algorithms now known as digital waveguide synthesis, because the delay line acts to store one period of the signal.
- https://en.wikipedia.org/wiki/Distortion_synthesis - a group of sound synthesis techniques which modify existing sounds to produce more complex sounds (or timbres), usually by using non-linear circuits or mathematics. While some synthesis methods achieve sonic complexity by using many oscillators, distortion methods create a frequency spectrum which has many more components than oscillators. Some distortion techniques are: FM synthesis, waveshaping synthesis, and discrete summation formulas.
- https://en.wikipedia.org/wiki/Waveshaper - a type of distortion synthesis in which complex spectra are produced from simple tones by altering the shape of the waveforms.
- Synthesizer Manuals Collection - Collecting several hundred manuals in one location, this collection of information about Music Synthesizers spans over 40 years of technology and products. Most consist of information about programming, usage and operation of synthesizers, as well as software products that emulate synthesizers. Additional scans are always welcome.
- Audio Synthesis via Vacuum Tubes - Eric Barbour, 1997
- Computers in Music - Pierre Boulez and Andrew Gerzso, Scientific American, April 1988
- Open Theremin V3 - an open source hardware and software project with a great community of musicians and people interested in the world of electronic music instruments . The aim is to build a next generation, digital version of the legendary music instrument. With more than 1000 Open.Theremins in the world the new version 3 was built based on many community ideas and inputs.
- https://github.com/pichenettes/shruthi-1 - Firmware and hardware description files for the Shruthi-1, an hybrid monosynth
- (the return of the) blackdeath noise synth
- micro-blackdeath noise synth
- the dark interpreter
- https://github.com/MrBlueXav/Dekrispator - Experimental Music synthesizer based on an STM32F4 Discovery board (ARM Cortex M4F from STM32 series) with USB MIDI Host function for interaction and automatic mode.
- https://github.com/MrBlueXav/Dekrispator_v2 - New Experimental Music synthesizer based on an STM32F4 Discovery board (ARM Cortex M4F from STM32 series) with USB MIDI Host function for interaction and automatic mode. Updated with Cube/HAL.
- https://code.google.com/archive/p/forbinlfo - a project to build a Low Frequency Oscillator module for an Analog Synthesizer using a simple cheap Digital Signal Processor (DSP). The advantages that this gives you are many fold in that it will allow certain operations that are extremely difficult and expensive in the pure Analog domain such as phase differences that are continuously variable and completely arbiatary.
- Mozzi - sound synthesis library for Arduino. Mozzi brings your Arduino to life by allowing it to produce much more complex and interesting growls, sweeps and chorusing atmospherics. These sounds can be quickly and easily constructed from familiar synthesis units like oscillators, delays, filters and envelopes. You can use Mozzi to generate algorithmic music for an installation or performance, or make interactive sonifications of sensors, on a small, modular and super cheap Arduino, without the need for additional shields, message passing or external synths.
- x0x Clones - website for learning about vintage Roland machines as well as their hardware clones and software emulations, old and new, including Roland SH-101, TB-303, TR-808 and TR-909 Clones & XOX Emulations. dead.
- x0xb0x - not just another MIDI-controlled TB-303 clone. x0xb0x is a full reproduction of the original Roland synthesizer, with fully functional sequencer. The sequencer can be programmed just like the original 303 (ok its actually a little easier, we think) and can be used to control other synthesizers via any of its various output formats. 128 banks of track memory and 64 banks of pattern memory are stored in onboard EEPROM, no battery-backup is needed!
- https://www.critterandguitari.com/pages/organelle - The Organelle makes it easy to explore new sounds and experiment with new ways of making music. It combines playful and intuitive controls with a powerful and flexible sound engine. The result is an instrument that is limitless in musical possibility and a joy to play. At the heart of the Organelle's sound engine is a robust computer that runs patches. A patch allows the instrument to take on different forms. Onboard hardware for sound input and output and mappable knobs, keys and buttons enable patches to synthesize, sample, effect, and anything in between!
- http://www.jidesk.net/computing/bigglesworth - a cross-platform editor and librarian for the Waldorf Blofeld
- JDXi Manager - an easy-to-use, intuitive, modern looking software patch editor for the Roland JD-Xi synthesizer. Currently editing of the Analog Synth part, the two Digital Synth parts, the Drums part and the Effects of the JD-Xi is supported. It is designed to run on Microsoft Windows and on Linux. The JDXi Manager is still work in progress and more features and functionality are being added with every new release.
- Prynth - Our goal is to explore models for self-contained programmable synthesizers, gathering attributes from both hardware synths and computer-based systems.
- https://github.com/eclab/edisyn - a synthesizer patch editor library written in pure Java. It runs on OS X, Linux, and Windows.Edisyn is particularly good at exploring the space of patches. It has to my knowledge the most sophisticated set of general-purpose patch-exploration tools of any patch editor available.
- https://github.com/flok99/UTWIN6001 - software for the UTWIN6001 hardware. The UTWIN6001 is a "hat" for the raspberry pi allowing you to interface to a Doepfer A100 compatible system (eurorack modular synthesizer). This software allows you to do all kinds of "conversions": midi to control voltage AND control voltage to midi, audio-frequency to control voltage, and so on!
Control voltage / gate & trigger
- YouTube: Molten Modular 09 - DC coupling, CV and DAW control with Bitwig 2.1
- YouTube: Molten Modular 12 - AC coupling, CV and DAW control with Bitwig 2.1
- midimsg.lv2 is a set of plugins to transform midi output into usable values to control other plugins. For example: aftertouch transfers channel aftertouch to CV, controller and modwheel to CV
- https://github.com/harryhaaren/jm2cv - Jack Midi to Control Volage. Old! Doesn't use JACK CVport metadata
- jm2cv guidelines - Linux Musicians forum
- https://github.com/jkrame1/Betweener - Open source Voltage/MIDI conversion hardware and software.
- GZD - attempts to find the frequency with the biggest magnitude in an audio-signal. This frequency is then transformed into a control voltage.
- https://github.com/mattb/teensy-cv - An opamp board to scale Eurorack control voltages into and out of ranges compatible with a Teensy MCU board
- YouTube: Ready to go modular? 10 Common Beginner Questions - Benn Jordan (The Flashbulb)
- ModularGrid - a database for modular synthesizers with an integrated planner where people gather information and sketch out their modulars.
- https://en.wikipedia.org/wiki/Moog_modular_synthesizer - a monophonic analog modular synthesizer developed by the American electronic instrument pioneer Dr. Robert Moog. Many different models were manufactured by R.A. Moog Co. (Moog Music after 1972) from 1965–80.
- Synthesizers.com - Fine modular analog synthesizers featuring classic styling and world-class customer service
- https://en.wikipedia.org/wiki/Doepfer_A-100 - Eurorack
- https://github.com/AndrewBelt/WaveEdit - Synthesis Technology WaveEdit for the E370 and E352 Eurorack synthesizer modules
- Home-built Synthesizer Modules - a number of synthesizer modules, based on the Doepfer module size and power format, by Dr. James J. Clark
- https://github.com/mikemoretti3/Synths - synth design repo
- https://github.com/midilab/aciduino - Cheap Roland TB303 Step Sequencer clone aimed for live interaction. Your acid lines for a very low cost.
- YouTube: Hybrid modular - The one must-have module: bridging Eurorack and VCV Rack, Softube (ES-8 and MOTU)
- https://en.wikipedia.org/wiki/Analog_modeling_synthesizer - a synthesizer that generates the sounds of traditional analog synthesizers using DSP components and software algorithms. Analog modeling synthesizers simulate the behaviour of the original electric and electronic circuitry in order to digitally replicate their tone. This method of synthesis is also referred to as Virtual Analog or VA
Patching / programming
See also Audio#Programming
- Patchshare - A way to share modular synth patches.
- https://en.wikipedia.org/wiki/Vector_synthesis - provides movement in a sound by providing dynamic cross-fading between (usually) four sound sources. The four sound sources are conceptually arranged as the extreme points of X and Y axes, and typically labelled A, B, C and D. A given mix of the four sound sources can be represented by a single point in this 'vector plane'. Movement of the point provides sonic interest and is the power of this technique. Mixing is frequently done using a joystick, although the point can be controlled using envelope generators or LFOs.
- JSynthLib - an Open Source Universal Synthesizer Patch Editor / Librarian written in the Java Language. Beside a bunch of commercial synths, it provides an editor for MIDIbox SID V1 and MIDIbox FM, which gives you access to all sound parameters and the wavetable sequencer. Since the official beta release of JSynthLib as well as the MIDI API of Java v1.5 has some flaws, I created this short guide in order to describe the required steps to setup JSynthLib for a MIDIbox properly.
"take one square wave, one pulse wave, detune slightly. run to resonant 12db lowpass filter (you want 12db because the more gentle rolloff curve is much more suited for basses). A slight bit of env mod on the filter cutoff is acceptable, but don't go crazy with it, you're not trying to make a 303 here. A really low cutoff with a relatively high resonance will give you alot of crazy harmonics spun off into neverneverland, which once you hit on a nice sweet spot with give the impression of deeper bass." 
- MusicTech: Drum Synthesis
- YouTube: ANALOG SYNTHESIZED PERCUSSION - korg
- YouTube: Eurorack Modular Kick Drum Tutorial
- https://github.com/Stenzel/newshadeofpink - Recipe for generation of pink noise
- https://github.com/PaulSlocum/cynthcart - A synthesizer program for the Commodore 64 computer designed with live performance in mind. Includes arpeggiator, portamento, stereo SID and MIDI support, realtime filter control, many other features. The program is written in 6510 assembly language. Over 700 Cynthcart cartridges have been sold making it one of the most popular Commodore 64 homebrews.
- https://github.com/floooh/chips - 8-bit chip and system emulators in standalone C headers
See also Audio#Sonification
- A Brief History of Optical Synthesis - written by Greg J. Smith, 2017
- https://en.wikipedia.org/wiki/Variophone - developed by Evgeny Sholpo in 1930 at Lenfilm Studio Productions, in Leningrad, the Soviet Union, during his experiments with graphical sound techniques, also known as ornamental, drawn, paper, artificial or synthetic sound. In his research Sholpo was assisted by the composer Georgy Rimsky‐Korsakov. The Variophone was an optical synthesizer that utilized sound waves cut onto cardboard disks rotating synchronously with a moving 35mm movie film while being photographed onto it to produce a continuous soundtrack. Afterwards this filmstrip is played as a normal movie by means of a film projector. Being read by photocell, amplified and monitored by a loudspeaker, it functions as a musical recording process.
- https://en.wikipedia.org/wiki/Oramics - a drawn sound technique designed in 1957 by musician Daphne Oram. The machine was further developed in 1962 after receiving a grant from the Gulbenkian Foundation. Oram's composition machine consisted of a large rectangular metal frame, providing a table-like surface traversed by ten synchronised strips of clear, sprocketed 35mm film. The musician drew shapes on the film to create a mask, which modulated the light received by photocells. Although the output from the machine was monophonic, the sounds could be added to multitrack tapes to provide more texture.
- https://en.wikipedia.org/wiki/UPIC - (Unité Polyagogique Informatique CEMAMu) is a computerised musical composition tool, devised by the composer Iannis Xenakis. It was developed at the Centre d'Etudes de Mathématique et Automatique Musicales (CEMAMu) in Paris, and was completed in 1977. Xenakis used it on his subsequent piece Mycènes Alpha (1978), and it has been used by composers such as Jean-Claude Risset (on Saxatile (1992)), François-Bernard Mâche (Hypérion (1981), Nocturne (1981), Tithon (1989), Moires (1994), Canopée (2003)), Takehito Shimazu (Illusions in Desolate Fields (1994)), Mari King, and Curtis Roads. Aphex Twin talked about it in an interview
Physically, the UPIC is a digitising tablet linked to a computer, which has a vector display. Its functionality is similar to that of the later Fairlight CMI, in that the user draws waveforms and volume envelopes on the tablet, which are rendered by the computer. Once the waveforms have been stored, the user can compose with them by drawing "compositions" on the tablet, with the X-axis representing time, and the Y-axis representing pitch. The compositions can be stretched in duration from a few seconds to an hour. They can also be transposed, reversed, inverted, and subject to a number of algorithmic transformations. The system allows for real time performance by moving the stylus across the tablet. The UPIC system has subsequently been expanded to allow for digitally sampled waveforms as source material, rather than purely synthesised tones.
- Coagula is an image synth. This means that it is both a simple image editor, and a program for making sound from those images.
- HighC - a graphical music creation tool. It is a synthesizer, a sequencer and a mixer. Its goal is to make music composition as simple and direct as sketching.
- Graph-O-Spect - This program embeds images into sound files. It creates a .wav file whose spectograph matches the input .ppm file.
- SpectroBits - Spectrogram Synthesizer
- Virtual ANS is a software simulator of the unique Russian synthesizer ANS - photoelectronic microtonal/spectral musical instrument created by Russian engineer Evgeny Murzin from 1938 to 1958. Murzin named his invention in honour of the composer Alexander Nikolayevich Scriabin. The instrument was used by Stanislav Kreichi, Alfred Schnittke, Edison Denisov, Sofia Gubaidulina, Edward Artemiev and other Soviet composers. You can hear the sound of the ANS in Andrei Tarkovsky's movies Solaris, The Mirror, Stalker. In 2004, the British experimental group Coil released CoilANS, a boxed set of experimental drone music performed on the ANS.
Virtual ANS (2)
- AEO-Light - a new generation of optical sound extraction software developed by the University of South Carolina in close cooperation with Tommy Aschenbach. The project is made possible by the generous support of the National Endowment for the Humanities. The official project webpage contains additional information about the project’s history.
- SoundGrid - integrates sound composition and Cartesian coordinate graphing. Sound Grid is also a sonification tool via tabular cut and paste functions.
- The Analysis & Resynthesis Sound Spectrograph - analyses a sound file into a spectrogram and is able to synthesise this spectrogram, or any other user-created image, back into a sound.ARSS is now superseded by Photosounder, which makes use of most of the techniques offered by ARSS in a simple to use and powerful graphical user interface and built in editor.
- Photosounder - the first audio editor/synthesizer to have an entirely image-based approach to sound creation and editing. Thanks to its powerful and omnipotent synthesis algorithms, it is capable of creating any sound possible. Powerful built-in image editing tools, some yet unknown to general image editing programs, are specifically tailored to enable you to create and edit sounds with ease in ways and with results simply impossible with other programs.
- https://github.com/ZoeB/steg - Convert ASCII messages into sine waves
- Zynthian - a new class of machine. A kind of swiss army knife of synthesis, equipped with multiple engines, filters and effects. Completely configurable and upgradeable. An Open Platform for Sound Synthesis. Based on Raspberry Pi and Linux, its hardware specification is public and software is Open Source. It is fully hackable! DIY (Do It Yourself!). A community-focused project where you can choose between build everything from scratch or use one of the kits that we offer, adapted to the different skill levels. You can use it for live performing, studio production or as a tool for experimental sound exploration.
- PreenFM2 - brings the old FM synthesis in a small open-source modern DIY box.
hardware - $
- YouTube: Axoloti: Let's Make A $75 Drum Machine - Benn and Gear
- Kyma - hardware and visual software environment for creative sound design, live performance, and scientific exploration. In Kyma, a user programs a multiprocessor DSP by graphically connecting modules on the screen of a Macintosh or Windows computer. $$
The first version of Kyma, which computed digital audio samples on a Macintosh 512K was written in the Smalltalk programming language in 1986 by Carla Scaletti in Champaign, Illinois. In May 1987, Scaletti had partitioned Kyma into graphics and sound generation engines and ported the sound generation code to a digital signal processor called the Platypus designed by Lippold Haken and Kurt J. Hebel of the CERL Sound Group. When the University of Illinois at Urbana-Champaign eliminated the funding for the PLATO laboratory in 1989, Scaletti and Hebel formed Symbolic Sound Corporation in order to continue developing Kyma and digital audio signal processing hardware.
Teenage Engineering oplab
- teenage engineering – oplab - the musical switchboard for all your electronic instruments. it allows you to interconnect virtually any electronic musical instruments and music software. no more hassle with one box for MIDI and another for CV or a third for USB. just connect your cables, set the appropriate scenario and experience a perfect sync.
- https://en.wikipedia.org/wiki/PC_speaker - a loudspeaker built into most IBM PC compatible computers. The first IBM Personal Computer, model 5150, employed a standard 2.25 inch magnetic driven (dynamic) speaker. More recent computers use a piezoelectric speaker instead. The speaker allows software and firmware to provide auditory feedback to a user, such as to report a hardware fault. A PC speaker generates waveforms using the programmable interval timer, an Intel 8253 or 8254 chip.
- https://wiki.gentoo.org/wiki/PC_Speaker - more commonly referred to the speaker located on the motherboard. Nowadays this speaker is usually a simple piezoelectric speaker providing just enough speaker hardware to distinguish simple frequency and tones of beeps. Beeps usually occur on error, but can be customized as this article will document.
echo -e '\a'
- beep - beep the pc speaker any number of ways
beep -f 200 -f 300 # beep at 300Hz.
- https://github.com/przemoc/pcspk - PCSpk is a set of command line applications for playing simple sounds and melodies using the PC speaker. It is inspired by simple, but really great Johnathan Nightingale's beep.
- 8088 PC Speaker MOD player: How it’s done « Reenigne blog - The last 100 seconds of 8088 MPH sound very different to the rest of the demo. The end tune is actually a 4-channel Amiga MOD file (which you can download here) composed by coda. Playing back a MOD through PC speaker on such a slow machine has never been done before. Here is how we did it.
- What’s up with the Beep driver in Windows 7? - Earlier today, someone asked me why 64bit versions of windows don’t support the internal PC speaker beeps. The answer is somewhat complicated and ends up being an interesting intersection between a host of conflicting tensions in the PC ecosystem.
- https://github.com/vareille/toot - a beep that beeps. it's both a C C++ library and a command line tool for Windows, OSX, Linux, BSD, Solaris, Minix, Raspbian
- https://github.com/dbatbold/beep - Beep sound library and utility for alerting end of a command execution. Beep can also play MIDI or text music score. Written in Go.
- https://github.com/rorymckinley/beep - A wrapper around the linux beep utility
- https://github.com/wrbs/MidiToBeep - scripts for playing midi files using the linux beep command
- https://github.com/ShaneMcC/beeps - Collection of beep scripts to play music from pc speaker.
- https://github.com/NaWer/beep - ♫ A collection of bash scripts playing various music using beep ♫
- https://github.com/JoshuaCurry/linux-beep-tunes - A compilation of Linux Beep tunes from various sources.
- https://github.com/adamrees89/Beep-Songs - Song scripts for the 'beep' software commonly found in Linux
See also DAW#Modular synth tracker
- gAlan - The Graphical Audio Language. A modular synthesiser - drum-machine - sequencer - effects-unit for Linux and Win32. Like Buzz.
- AlsaModularSynth is a realtime modular synthesizer and effect processor. It features MIDI controlled modular software synthesis, Realtime effect processing with capture from e.g. "Line In" or "Mic In", Full control of all synthesis and effect parameters via MIDI, Integrated LADSPA Browser with search capability, JACK Support
- https://github.com/tartina/ams - patches for Alsa Modular Synth
- ams-lv2 - set of LV2 plugins is a port of the internal modules found in Alsa Modular Synth. These plugins are used to create modular synthesizers and contains: VCO, VCF, VCA, LFO, Slew Limiter, Envelop, Sample & Hold, etc.
- YouTube: ams-lv2 - demo
- avw.lv2 - A port of the AMS internal modules to LV2 plugins. It provides VCOs, LFOs, Filters and other modules controlled using Voltage Controls. They are designed especially to be used with Ingen to create Modular Synths.
- Fomp is an LV2 port of the MCP, VCO, FIL, and WAH plugins by Fons Adriaensen. There are 13 plugins in total: 1 auto-wah, 1 EQ, 3 chorus, 5 filters, and 3 oscillators.
- Omnifono is a mixture of various simple utilities in one plugin: amplifier, panner, noise generators, etc. LV2.
- BLOP comprises a set of LADSPA plugins that generate bandlimited sawtooth, square, variable pulse and slope-variable triangle waves, principally for use with one of the many modular software synthesisers available. They are wavetable based, and are designed to produce output with harmonic content as high as possible over a wide pitch range.
- Bandlimited Sawtooth Oscillator
- Bandlimited Square Oscillator
- Bandlimited Variable Width Pulse Oscillator
- Bandlimited Variable Slope Triangle Oscillator
- Random Wave Generator
- Mono Amplifier
- 4 Pole Low Pass Filter with Resonance
- ADSR Envelope Generator
- ADSR Envelope Generator with Gate and Trigger
- DAHDSR Envelope Generator with Gate and Trigger
- Clock Oscillator with Gate
- Clock Pulse Oscillator with Gate
- Frequency Modulator
- Control to Audio Interpolator
- Signal Tracker
- Signal Sum
- Signal Difference
- Signal Product
- Signal Ratio
- Signal Branch
- BLOP-LV2 - a mostly faithful port of blop-0.2.8, except plugin variants have been eliminated via the use of morphable Control/CV ports. This way, users do not have to choose from several versions of the same plugin, but the host can configure controls to be control-rate or audio-rate as appropriate. This mechanism is backwards compatible, so these ports will simply appear as normal LV2 control ports in hosts that do not support port morphing.
- Omins is a collection of LADSPA plugins geared at modular synthesizers. The name comes from Om, but these plugins are not Om specific in any way, and Om does not require them. However most (not all) of them are only really useful in modular systems.
- SpiralSynth Modular is an object orientated music studio with an emphasis on live use. You can use it in a fairly straight forward way to make tracks with, or get very experimental. Audio or control data can be freely passed between the plugins. Data can also be fed back on itself for chaotic effects.
- vModSynth -a modular software synthesizer for Linux. It is not intended to be as convenient as possible, but to resemble the look & feel of a real, analog, modular software synthesizer.
- Zyne - a Python modular synthesizer using pyo as its audio engine. Zyne comes with more than 10 builtin modules implementing different kind of synthesis engines and provides a simple API to create your own custom modules.
- Synth-A-Modeler compiler, enables musicians to synthesize binary DSP modules according to mechanical analog model specications. This open-source tool promotes modular design and ease of use. By leveraging the Faust DSP programming environment, an output Pd, Max/MSP, SuperCollider, VST, LADSPA, or other external module is created, allowing the musician to hear the sound of the physical model in real time using an audio host application.
- TX Modular system is a modular software synth which is written in the SuperCollider language. It can be used to build interactive audio systems such as: digital musical instruments, interactive generative compositions, sound design tools, live audio processing tools, and group improvisation performance tools.
- https://gitlab.com/sonusdept/hijack - VCV Rack - JACK bridge
- https://github.com/Skrylar/skjack-vcv - First-class JACK support for VCV Rack
- https://github.com/bsp2/VeeSeeVSTRack - an adaption of VCV Rack for the VST2.4 format.
- https://gitlab.com/sonusdept/rlbridge - VCV Rack to LV2 Bridge
- https://github.com/mzuther/ProtoFaust - DSP prototyping in Faust for VCV Rack
- https://github.com/stellare-modular/vcv-link - Ableton Link module for VCV Rack
- https://github.com/mschack/VCV-Rack-Plugins - 3 Channel 16 Step Programmable Sequencer. Mixer 1x4, 2x4 and 4x4 (with EQ, 4xAUX buses, and 2 x amplification ). Triad Sequencer ( v0.4.10 and above will not load notes properly from pre v0.4.10 builds ). Synth Drums. Ping Pong Delay (with Gnip Gnop mode). 3 Channel Oscillator with Filter and Amp Envelope
- http://www.autodafe.net/virtual-instruments/vcv-rack-modules.html - register to download, free with €5 suggested donation
- https://github.com/mgunyho/PdArray - PdArray plugin for VCV Rack
- https://github.com/monadgroup/axiom - an extremely flexible node-based realtime audio synthesizer. It was originally designed for size-constrained environments such as PC intros in the demoscene, but is entirely open source and is becoming an excellent free tool for any musician. 
- XODULAR - a new modular synthesizer system in Pure Data. Where the first XODULAR system was a collection of simpler synthesis building blocks, the ecoSYSTEM is a much more personal instrument. The modules are more specific and complex. I wanted to create an instrument with a unique workflow and sound. For this reason, I do suspect that it might not be as easy to dive straight into as the previous XODULAR system, but the sonic possibilities are much, much wider.
- Automatonism - a modular synthesiser that runs in the open source programming language Pure Data. It features a large library of 81 modules (version 2.1). Modular synthesis is akin to musical gardening: modules can spring to life and their interconnections suggest the formation of a sonic ecosystem. The act of patching is no different to playing any other instrument: it affords the opportunity to express oneself and directly engage with other people. It is towards that goal of performability and communication that Automatonism was created. It mimics the signal flow of a physical modular but features dynamic preset management and advanced parameter mapping tools on an open-source platform.
- Twist - a node-based audio synthesizer that lets you create sound effects and soundtracks. Its modular nature makes it possible to produce any kind of sound by just "connecting the dots".
PatchScript / MidiPatch
- https://github.com/kallaballa/PatchScript - A scriptable and modular real-time synthesizer engine
- https://github.com/kallaballa/MidiPatch - MidiPatch is a scriptable and modular real-time software synthesizer using the PatchScript API
- https://github.com/eclab/flow - a fully-modular multitimbral and polyphonic additive software synthesizer written in pure Java. It runs on OS X, Linux, and Windows. I have used it to play individual patches and to play many simultaneous patches for a full song controlled over MIDI via a DAW.Flow has almost 70 modules of different shapes and sizes, and currently supports up to 32 voices at up to 256 partials and 44.1KHz with a rate of one new partial update every 32 samples. Flow is a very computationally expensive program and will keep your laptop quite warm and your fan busy. You need to have some fairly good hardware to run Flow at full blast successfully (for reference, Flow was developed on a 2.8Ghz i7 2015 Macbook Pro Retina). There are options for reducing Flow's footprint (such as reducing the number of voices or partials).
- PDF: Flow manual
- Moselle Software Synthesizer - for making music. Connect a MIDI keyboard to your computer, design sounds, and play them. Moselle uses the modular synthesizer paradigm of connecting modules any way you want. Unlike hardware modular synthesizers, Moselle is polyphonic and lets you load and save patches. Program it not with graphics but with a simple programming language. The fully-functional, stand-alone "alpha" version can be downloaded for free.
XSRDO Patchwork Modular System
- XSRDO Patchwork Modular System - a true modular synthesizer. You can choose what modules you want, where to put them and how many of them you want. Each module is independant of any other and only becomes active when you start to patch them together in your own creative way. Features... 36 virtual 'racks', 50 virtual 'modules', Insert any module into any rack (except Effects, System and Output [of which only one instance of each type is allowed]), Insert multiple modules, Movable modules. Windows VST.
- Kamioooka - a polyphonic Full-Modular synthesizer with patch cable system. You can freely combine modules and make patches. 10 module slots and 7 types of modules (VCO/VCF/VCA/ADSR/LFO/MISC/SEQ) are available. Windows VST.
- WREN - an open source modular soft synth for Windows
- Cynthia - monophonic VSTi, very Old School, but will still be able to keep in tune throughout the song, patches can be stored and it is of course fully MIDI controllable. Cynthia is free to use and will send you 30 years back in time to the dawn of modular synthesis... As the name implies its inspired from the old EMS SynthiA. Windows.
- YouTube: CYNTHIA VERSION 1. 0 by NineCows
- KX77FREE - Windows VST synths
- Kx-PolyM-CSE - Vintage modular polyphonic synthesizer with CV/GATE sequencer and CS70M* emulation.
- Kx-PolyMod - Vintage modular polyphonic synthesizer with stereo SF2 player. To build analog 70's leads!
- Kx-Modulad - Analog modular synthesizer with stereo SF2 player and an additive synthesis WaveTracer to build high quality waveforms. 128 KX presets (70's and 80's).
- KX-SYNTH-X16-V5 - Vintage modular polyphonic synthesizer.
- Beatzille - a compact version of our monster modular synthesizer Bazille. Although its condensed feature set makes it the ‘little brother’, Beatzille is still an engaging and capable synthesizer. Power and style run in the family. Digital oscillators, analogue-style filter and flexible patching will keep you busy for a good while before thinking about tackling Bazille.
- https://github.com/hzdgopher/4klang - a modular software synthesizer package intended to easily produce music for 4k intros (small executables with a maximum filesize of 4096 bytes containing realtime audio and visuals). It consists of a VSTi plugin example songs/instruments as well as an example C project showing how to include it in your code. Or if you dare to compile it yourself also the source code for the synth core and VSTi plugin.
- https://github.com/hzdgopher/64klang - a modular, nodegraph based software synthesizer package intended to easily produce music for 64k intros (small executables with a maximum filesize of 65536 bytes containing realtime audio and visuals) or 32k executable music. It consists of a VSTi plugin, a few example songs/instruments, as well as an example C project showing how to include it in your code for playback.
- GeonKick - A kick drum synthesizer. License: GPLv3
- https://github.com/milkmiruku/stegosaurus - with patches and fixed build
- YouTube: Stegosaurus LV2 plugin
- Kick - C4
- Snare - D4
- Closed hat - E4
- Open hat - F4
Currently uses MIDI channel 1 rather than 10.  patch in milkmiruku/stegosaurus
- https://sourceforge.net/projects/drumsynth - original
- Juced Plugins - We took DrumSynth and EQinox and made them work better and in LV2 format.
- Original homepage
- https://github.com/DISTRHO/DISTRHO-Ports/tree/master/ports/drumsynth - Drumsynth is a JUCEified VST/LV2 port of the excellent Paul Kellet's DrumSynth.
- 32 voices polyphonic
- 24 drum notes (2 octaves mapping)
- 1 tone with sweep
- 2 overtones
- 3 noize generators
- envelope editor
- midi automatable with learn function
- import/export of DS files
- Rudolf 556 - Rudolf 556 is an analogue-sounding drum machine. It has six separate drum engines, two of which are bass drums, two are snares and two are hihats. Each engine has three parameters: L (Length) - pretty obvious what this controls. The higher the value, the longer the drum will sound. H (Hardness or Harshness) - when this value is small the drum will sound "soft" and when it's large it will sound "hard". Basically it controls the amount of noise that is mixed in. V (Volume) - basic gain control.
- Smack is a drum synth, 100% sample free. It intends to emulate a large number of famous drum machines (TR/others) as well as sample code for physical modeling. It's built with LADSPA plugins and the Om modular synth.
"Yes, Smack was based on Om, a modular synthesis environment. Ingen is the successor to Om. If we are lucky, Ingen will see a release soon and finally make the step from brilliant in theory to awesome in practice :) The Om codebase is as dead as can be and Smack's author pretty much dropped out of LAU/LAD. Ingen's author David is interested in porting Smack's patches from Om to Ingen, but that clearly has no priority." 
- KickMaker - a synthesizer designed specifically to create good kick drum sounds. It uses four independent oscillators and a wide range of effects, allowing one to create perfectly customized beats.
Required VST SDK 2 to build
g++ -fPIC -c -I. -I../vstsdk2.4 -I../vstsdk2.4/public.sdk/source/vst2.x -I../vstsdk2.4/vstgui.sf/vstgui -Iplugincore -Igui -Ieffects -D__cdecl="" *.cpp g++ -shared -Wl,-soname,KickMaker.so -o KickMaker.so *.o
- https://github.com/chronopolis5k/Beatfox - a free Csound generative beat tool. It will constantly create perfectly looped rhythms that can easily be dropped into a program like Ableton Live. Leave it running all night, and you'll wake up with hundreds of loops in your folder!
- https://github.com/chronopolis5k/Kickblast - a free Csound program that populates a folder full of computer (Csound) generated bass drums.
- mbass - a feature rich analogue modeled bass drum synthesizer written for Pd, aka Pure Data. If you are unfamilar with Pd check out the Pd community website puredata.info. Pure Data is an object orient real-time music and multimedia environment, so versitile that it will wet your mother's knees.mbass features a nonlinear distortion filter, with level compensation; a trigger synced FM LFO with dual polarity modulation control; and two independent exponential envelopes with tight attack times.Written with entirely native objects, the mbass object may be used on any platform running a stock installation of PD, so there is no need to compile sketchy externals that come with broken make files; just click and go.
- QuirQuiQ - Punchy kick synth that fits in your shuttlecraft or in your pocket with a big sound and tiny cpu footprint. Utilizes digital envelopes allowing for precise control, and presented in a clear, resizable vector interface. Slam the dancefloor with sharp and pounding kicks, ooomph away with long breathy thumps, go for a grungy and snappy sound or find just that right balance that is perfect for your track. By Ocean Swift Synthesis.
- http://www.g200kg.com/jp/software/freqatic.html - Windows VST.
- Drumatic VE - inspired by several sounds of the TR-909 and TR-808 drum computers. It isn't just a sample player... It uses smart wavetable synthesis mixed with virtual-analouge synthesis to get the best results. Windows VST.
- CM-505 - a 12 voice drum synth. Windows VST.
- TR-808 - a software emulation (VSTi plugin) of the Roland TR-808. The TR-808 service notes provide full schematics for each voice. I used them to make SPICE simulations of the circuits. I also analysed the best samples I could find (The Tape808, by Goldbaby), and tweaked the sounds until the waveforms and spectral content were as close as possible to the real thing. Most of the voices have more parameters and a greater range than their hardware predecessor. Windows VST.
- ES DGenR8 - a free virtual analog drum machine in the style of Roland's TR Series, in particular the Roland TR-909, with 11 voices and controls that mimic the TR-909: Bass Drum, Snare Drum, Low, Mid & High Toms, Rim Shot, Clap, Open & Closed Hi Hats, Crash & Ride Cymbals. Windows VST.
- TW-Opkicker - Analogue kick synthesis in digital form, but with some extra features. 4 Oscilators, tweaked and twisted to simulate analogue behavior. Multiple Filters and a Distortion to get the sound you want. Reverb, Echo, Delay and Auto Pan to create all sorts of unusual effects. Us an extra effect like a Maximizer or Compressor to get groundshaking kicks. Playing higher notes turns this machine in a regular synth. Windows VST.
- TW-Percussion1 - Synth designed for short and percussive sounds. 2 multiple waveform oscilators, 1 noise oscilator. Low Pass/High Pass/Band Pass filter to suit every need. 2 LFO's for the filters, to get that nice modulated sound. Stereo beat synced delay. Windows VST.
- DC Bazz::Murda - VSU/AU bass/kick synth. Windows VST.
- EXD-80 - a flexible drum synth that can produce a wide variety of drum and percussion sounds, from emulations of classic drum machines to crazy, mangled glitch sounds – all synthesized, no samples here! It is suitable for many EDM styles including electro, glitch, industrial, ambient, dubstep, drum & bass and hip hop. Windows VST.
- KICKWOrK - a kick drum synthesizer plugin. From deep hiphop basses to hard rave kicks - everything available with the turn of some knobs. A clear and easy GUI helps you to find your bass drum sound quick. No samples inside - pure analogue emulation. A minimum of knobs for a maximum of variations. Kick sound can be triggered by any incoming MIDI note or by an audio input (bass drum of a drumloop). Windows VST.
- http://www.e-phonic.com/plugins/drumatic3.php - a virtual-analogue drum synthesizer. All sounds are 100% synthetic and allow an enormous flexibility and variation. Sounds: Bassdrum, Snaredrum, Handclap, 2 Toms, Hihats and a Rimshot / Bell. Key features: Graphical envelopes for amplitude and modulation, Load / save presets for single sounds, Simple but effective effect section for each sound with distortion and bitcrusher and a filter., 6 Stereo outputs, assignable for each sound, All parameters can be automated. Windows VST.
- https://www.kvraudio.com/product/ersdrums_by_andreas_ersson - Windows VST
- YouTube: ErsDrums - Free Drum Vsti
Kick Me Too
- https://theodosynthsarchive.wordpress.com/category/kmt/ - Windows VST.
- YouTube: Kick Me Too by ODO SYNTHS
- https://www.kvraudio.com/product/psy_drums_by_odo_synths - Windows VST
- YouTube: PSY Drums 5 Odo Synths
- Optik - a basic, yet interesting drumsynth with it's own unique sound. It's got 7 drums, multiple outputs and an onboard mixer. Each drum panel can be opened to reveal additional controls for further tweaking. Windows VST.
- YouTube: DR-Fusion V2 by ODO Synths
- daBUMZ - Mainly for bass drum or toms, but the sound can be widely ajusted. Goal was to have a minimum of knobs for a maximum of variations (note: each knob has a hint text for the parameter). daBUMZ does one sound at a time, triggered by MIDI notes or with the mouse on the “eye” in the middle. Available for Windows PC as VST-plugin.
- easy-toolz.de drums
- easy-drum X8 - an analog Vintage-style drum-module with 12 fully synthesized instruments and some additional features: -12 X 16 Step-Sequencers with Potis >modulations all Parameters - Distortion - Lofi - SV-Filter - Lfo a.m.more
- easy-beat-box - It is a "only with the mouse" using Drum-machine machine with the following specs: - 4 Drumslots a 16 Steps Sequencer - 4 Soundbanks ( mixed 1+2, fx, 8o8 ) 64 sounds each - Joystick manipulates : Horizontal > Pitch (Sounds) Slotwise - Vertical > Cutoff - Res - Drive - Flanger - Lofi - Hostsynchron - NO Midi-Input scheduled!
- easy-kick - Kick-Drum with 10 Bassdrum-samples-Tunning Bitcrusher -4 Filter Overdrive -A-D- Envelope - Reverb
- easy-drum o4 SE 909 - 4 Slot Drumbox with 909/808-Samples - overdrive-flanger-bitcrusher-moogfilter - 3 lfo -> modulated tune-cutoff-pan - 32 Patches
- The Best Free Synths - big list, various platforms
- ZynAddSubFX is a open source software synthesizer capable of making a countless number of instruments, from some common heard from expensive hardware to interesting sounds that you'll boost to an amazing universe of sounds.
- YouTube: UV#01 ZynAddSubFX Modulation Madness
- YouTube: UV#02 Making a Reese Bass in ZynAddSubFX
- YouTube: UV#03 Synthesizing a String Pad with ZynAddSubFX
- YouTube: UV#04 Making a Water Stream SFX in ZynAddSubFX
- YouTube: UV#19 Synthesizing an FM Growl Bass with Zyn-Fusion and Ardour using multiband processing
- YouTube: QR#01 Scratched Vinyl
- YouTube: How to use Zyn-Fusion's Macro Learn in Ardour 5
- zyn - extract synth engines from ZynAddSubFX and pack them in LV2 plugin format. Resulting plugins are heavily based on work made by Nasca Octavian Paul. If you like the amazing sounds these plugins generate you should thank Paul for this. Project goals: Port ZynAddSubFX synth engines to LV2, Fix some inherit issues preventing hard-realtime mode of operation, causing clicks sometimes (memory allocation/sleep in audio process context), Make synth engines reusable in source form, Make all synth engines parameters controlable on the fly (as opposed to original "parameter change takes effect on next note on" strategy), Fix bugs found and try to propagate fixes to ZynAddSubFX
- https://github.com/ventosus/zyn_ext_gui - a toolkit agnostic LV2 UI for ZynAddSubFx 2.5.3. This gives you an LV2 UI even if ZynAddSubFx has been linked to FLTK and does not provide an LV2 UI of its own.
- https://github.com/pdesaulniers/zyn-menu - Backup of a quick and dirty ZynAddSubFX presets browser for device w/ touchscreen
- https://github.com/mruby-zest/mruby-zest-build - the source of the Zyn-Fusion user interface.
- https://github.com/wtrsltnk/zynlab - Clone of ZynAddSubFX 2.44 to test some new ui ideas
- Yoshimi - software synthesizer for Linux, a "fork" of ZynAddSubFX. ZynAddSubFX was founded by Nasca Octavian Paul and continued by many others; several years later, Yoshimi was founded by our dear friend, the late Cal, at a time when ZynAddSubFX showed amazing promise but did not satisfy his needs and ours. If you enjoy profound and powerful tonality with your Linux, please do try Yoshimi, we think you will feel the love! The two projects are now in wonderfully active, but different, development.
- YouTube: HELM Synth
- Sorcer is a polyphonic wavetable synth LV2 plugin. Its sonic fingerprint is one of harsh modulated sub-bass driven walls of sound. Two morphing wavetable oscillators and one sine oscillator provide the generation routines. The LFO can be mapped to wavetable modulation as well as filter cutoff. An ADSR allows for shaping the resulting sound, while a master volume finishes the signal chain. Easily creating a variety of dubstep basslines and harsh pad sounds.
- Surge - an Open Source Digital Synthesizer, originally written and sold as a commercial product by @kurasu/Claes Johanson at vember audio. In September of 2018, Claes released a partially completed version of Surge 1.6 under GPL3, and a group of developers have been improving it since. 
- https://github.com/surge-synthesizer/surge-fx - Surge FX as a separate plugin, built with JUCE.
- YouTube: Surge FREE Synthesizer Plugin Pad Sounds | The Plugin Minute - 2m, SYNTH ANATOMY
- YouTube: Vember Audio Surge Is Now Free & Open Source - 21m, SadowickProduction
- YouTube: Free VST - Surge Synthesizer plugin - 7m, HRS Courses
- YouTube: Surge Free VSTi: Free synth, basic sound design - 9m, J Riley Hill
- YouTube: "Acid sound thing"... - 3m, Palle Svensson
- YouTube: Squelchy watery trancey sound design breakfast eating while speaking - 8m, Palle Svensson
- YouTube: neurobass surge fl studio - 10m, donVanjub
- YouTube: -quick tip- Bingo Players 'RATTLE' signature synth - 15s
- YouTube: Free VST - Surge Synth (Windows 64bit .exe) - preset demos,7m, vstplanet.com
- YouTube: surge synthesizer - preset demos, 9m, UPROAR 24
- YouTube: Surge VST - Modified presets & custom patches - 11m, roboticrealm
- YouTube: Surge VST - modified presets part II - 8m, roboticrealm
- YouTube: 🎼 Surge || Free VST Plugin || Hybrid Synthesiser 🎼 - 6m
- YouTube: Vember Audio Surge Residue Soundset - 3m, Gokosoul Records
- YouTube: rockn_out_with_surge-osc_122 - 4m, All sounds and effects provided by 25 instances of Surge Synthesizer
- YouTube: Surge VFX Patch - YouTube - 12m, older Surge!
- YouTube: Surge psytrance sounds - FM - 19m, Richard Cooper
- YouTube: EDM - Pretty Hearts - song made with Surge
- YouTube: Surge: A Powerful Open Source Wavetable / FM Synth - YouTube - 51m, DjangoZa
- YouTube: Surge Digital Synth VST Intro + Walkthrough + Demo - 1h27m, Benedict Roff-Marsh
- Crazynth - What is able to do? Generate weird sounds on random generated basis. Modulate a sine-like wave to get strange outputs. Stereo outputs (a 5.1 surround version is ready, but still to be released).
- sfxr - a little tool made in connection with the 10th Ludum Dare competition held in December 2007 to provide a simple means of getting basic sound effects into a game. The idea was that they could just hit a few buttons in this application and get some largely randomized effects that were custom in the sense that the user could accept/reject each proposed sound. It turned out to work rather well and a lot of the entrants used it, which is cool.
- sfxr-dssi - a port of the famous sound effect generator sfxr. sfxr-dssi is a very simple but functional example of the use of libwhy.
- Bfxr - an elaboration of the glorious Sfxr, the program of choice for many people looking to make sound effects for computer games. Bfxr has moved in the direction of increased complexity and range of expression. All the buttons that you know and love are here, but there are some new things as well: 5 new waveforms : triangle, breaker, tan, whistle, and pink noise. 3 new filters : compression, harmonics, and bitcrusher. Ability to lock parameters during mutation/randomization. Expanded pitch-jumping abilities - good for arpeggiation effects. Visualisation, Mixer, Keeps your sounds and mixes in persistant lists. Can reverse synths. Ability to link directly to sounds.
- Jfxr - a browser-based tool to generate sound effects, for example for use in games. It was inspired by bfxr, but aims to be more powerful and more intuitive to use. 
- rogue - multimode softsynth with LV2 interface, 4 oscillators with Virtual Analog, Phase Distortion, FM and other waveforms, PWM, PM, Sync, RM and AM modulation, 2 filters with Biquad, Moog and SVF style modes, 4 AHDSR envelopes with customizable curve
4 LFOs, 20 Modulation matrix slots, Effects: Chorus, Phaser, Delay and Reverb, Qt4 based UI
- Bristol Synthesiser Emulations on Linux - or Bristol is an emulation package for a number of different 'classic' synthesisers including additive and subtractive and a few organs. The application consists of the engine, which is called bristol, and its own GUI library called brighton that represents all the emulations. There are currently twenty something different emulations, each does sound different although the author maintains that the quality and accuracy of each emulation is subjective. One of the main reasons for putting together this site (host by Sourceforge which provides the rest of the services required by bristol) is to depict all the different emulations.
- monoBristol - Gui for Bristol Synthesiser
- Digits VSTi is here! Digits is a phase distortion synthesizer inspired by Casio's CZ series but takes that form of synthesis to the limit. Create warm pads, glitchy sounds, dirty basses, filthy sweeps, screaming leads, and anything in-between. The interface is minimal and designed to enable the user to create sounds from scratch in record time! And, if you're too busy for that, it comes with 51 lush presets that run the gamut from pads to stabs, leads and basses. Multi-platform VST
nekobee / Nekobi
- nekobee - A softsynth recreation of a classic single-oscillator bass monosynth. DSSI.
- https://github.com/DISTRHO/Nekobi - a DPF'ied build of nekobee, allowing LV2 and VST builds of the plugin
- Minaton - LV2 plugin - A monophonic, subtractive, beefy analogue style bass and lead synth.
- triceratops - A polyphonic virtual analogue synthesizer plugin.
- WhySynth - a versatile softsynth which operates as a plugin for the DSSI Soft Synth Interface. A brief list of features: 4 oscillators, 2 filters, 3 LFOs, and 5 envelope generators per voice. 11 oscillator modes: minBLEP, wavecycle, chorused wavecycle, asynchronous granular, three FM modes, waveshaper, noise, PADsynth, and phase distortion. 10 filter modes. flexible modulation and mixdown options, plus effects.
- Wolpertinger - an realtime opensource softsynth for linux, created by Johannes Kroll. From the ReadMe file: "Wolpertinger is a subtractive, antialiased software synthesizer. Sound is generated by a Saw/Rect/Triangle wave generator and then filtered through a bandpass filter whose center frequency "bounces" around the frequency of the playing notes."
- Add64 is an additive synthesizer. It is based on QT and uses the JACK Audio Connection Kit for platform independent audio/midi I/O. The GUI interface departs from the traditional knobs-and-buttons approach by using a spectral graph to permit the oscillators and related parameters to be modified.
DIN Is Noise
- DIN (DIN Is Noise) - a software musical instrument, uses the computer mouse to pick both the pitch (by moving horizontally) and the volume (by moving vertically) of a sound from an on-screen keyboard that displays the notes of the current scale and a number of microtones in-between. Bezier curves, FM and AM and control other parameters like stereo gater patterns, Delay feedback & volume patterns and Compressor patterns. Users can also create an unlimited number of drones pitched on any microtone and edit them in real-time.
- https://dinisnoise.org/download - evaluation binaries for Windows/Mac, full source available to compile for Linux!
- https://dinisnoise.org/?what=docs - with hotkey information
- https://sourceforge.net/projects/noisescaper/ - Synthesizer and sound generator based on the sounds of strange attractors (Lorenz and Roessler). Can create unusual industrial sounds for the experimentalists out there.
- https://github.com/williamweston/phasex - [P]hase [H]armonic [A]dvanced [S]ynthesis [EX]periment - an experimental MIDI softsynth for Linux/ALSA/JACK with a synth engine built around flexible phase modulation and flexible oscillator/LFO sources. Modulations include AM, FM, offset PM, and wave select. PHASEX comes equipped with multiple filter types and modes, a stereo crossover delay and chorus with phaser, ADSR envelopes for both amplifier and filter, realtime audio input processing capabilities, and more. Inspirations come from a variety of analogue and early digital MIDI synthesizers from the '80s and '90s.
- amsynth - an analog modelling (a.k.a virtual analog) software synthesizer. It mimics the operation of early analog subtractive synthesizers with classic oscillator waveforms, envelopes, filter, modulation and effects. The aim is to make it easy to create and modify sounds.
- Sineshaper - A monophonic synth plugin that sends the sound from two sine oscillators through two sine waveshapers in series. You can control the vibrato, tremolo, portamento, the tuning of both oscillators, the oscillator mix, the shape amount (total and split over both shapers) and the phase of the second waveshaper function. There is also an ADSR envelope generator that can control the total shape amount and the amplification (with controllable sensitivity for both), an LFO for the total shape amount, distortion, and a feedback delay. The shape amount and amplification is velocity sensitive, and the synth supports MIDI pitch bend events (with a range of +/- 2 semitones). All parameters can be controlled using MIDI Controller events.
- Mx44 - a polyphonic multichannel midi realtime software synthesizer. It is written in C and hand optimized for the (Intel) MMX instruction set. It runs under Linux, using the JACK daemon and a kernel modified for realtime performance. The core algorithm is a 4 x 4 crossmodulating matrix (phase and amplitude) with individual envelopes for each oscillator. Oscillators have individual frequency intonation, can emphasize any of the eight first harmonics and even do some internal crossmodulation. Envelopes can be switched between VCA and a VCF-like mode. The sustainloop of the envelope can be brought into oscillation in the audible spectre as well as provide slow LFO sweeps. Also, key and velocity modifications of phase relationship.
- Newtonator - an LV2 soft synth that uses a unique algorithm based on simple ideas of velocity and acceleration to produce some unpredictable sounds. Being an LV2 synth, it only works on Linux, and at the moment there is only an LV2 synth plugin; there is no stand-alone version.
- Obxd - Emulation of famous OB-X, OB-Xa and OB-8 synths
- OB-Xd - by discoDSP. based on the Oberheim OB-X. It attempts to recreate its sound and behavior, but as the original was very limited in some important ways a number of things were added or altered to the original design.The OB-Xd was designed to sound as good and as rich as the original. It implements micro random detuning which is a big part of that sound. However, it was not designed as a self-contained completely independent soft-synth. It needs to be contained within a VST framework where things like transposition, automation, layering, arpeggiation, etc., are available.
- synthv1 - an old-school 4-oscillator subtractive polyphonic synthesizer with stereo fx. pure stand-alone JACK client with JACK-session, NSM (Non Session management) and both JACK MIDI and ALSA MIDI input support, or LV2 instrument plugin
- padthv1 - an old-school polyphonic additive synthesizer with stereo fx. padthv1 is based on the PADsynth algorithm by Paul Nasca, as a special variant of additive synthesis. Features: pure stand-alone JACK client with JACK-session, NSM and both JACK MIDI and ALSA MIDI input support; LV2 instrument plugin.
- rt_lpc - real-time LPC analysis + synthesis + visualization. rt_lpc is a light-weight application that performs real-time LPC analysis and synthesis.
SO-404 / SO-KL5 / SO-666
- https://github.com/jeremysalwen/So-synth-LV2 - unofficial lv2 ports
- Synister is a substractive software synthesizer made by students of the TU Berlin. Downloads include a standalone version (PC/Mac) and VST2 Plugins (Windows 32/64bit) (OSX 64bit) for use in Digital Audio Workstations (DAWs). Synister has been tested on the following DAWs: Logic, Ableton Live, Cubase and Maschine and on Windows 7, 8, 10 and OSX El Captain. linux
- Peggy 2000 - subtractive synth with step sequencer made with juce
- https://github.com/falkTX/Paraphrasis - spectral modeling synthesizer. It is licensed under GPL v2 or any later. Paraphrasis uses these libraries under thier license terms: JUCE (GPLv2, GPLv3, AGPLv3, ISC), Loris (GPLv2), Teragon GUI Components, (GPLv2) TinyThread++ (zlib), sse_mathfun (zlib), Teragon PP (FreeBSD), readwriterqueue (FreeBSD), arduino-base64 (MIT/Expat), dbRowAudio (MIT/Expat), dbRowAudio dependency: SoundTouch (LGPL v2.1), dbRowAudio FFTReal (WTFPL). 
- https://github.com/VirtualAnalogy/Paraphrasis - original Mac version
- Vex - a 3-oscillator subtractive synthesizer that provides a series of sampled waves for intial tones. It can be run standalone through jalv.gtk or a plug-in manager like Carla.
Each of the 3 oscillators has the same modifiable parameters, such as octave detune, fine detune, phase adjustment and tuning. The filter section has a traditional ADSR layout, and low-pass and high-pass filter options. Discrete amplitude and LFO sections are provided, as well as independent effects controls. Chorus, reverb and delay are included in the effects section.
- Xsynth-DSSI plugin, a classic-analog (VCOs-VCF-VCA) style software synthesizer with an editor GUI. Xsynth-DSSI was written by Sean Bolton, and was based on Steve Brooke's Xsynth code, but has since aquired polyphonic operation, band-limited oscillators, a better filter mode, and velocity-sensitive envelopes.
- RTSynth - a midi event triggered real time software synthesizer entirely based on physics and mathematics.
Goal of the software is to reproduce sounds of strings, organs, flutes and drums in real time. The sound generation is based on the physics of the instruments. That means all sounds created by this software are the result of a mathematical model based on some physics about how the sounds shape varies in time. You have access to most of the models parameters through a graphical interface. Further more most of the parameters can be controlled by MIDI controllers.
- Wsynth-DSSI is a simple wavetable synth. It is not based on any "real life" synth, but was written with the PPG Wave and Prophet VS in mind. The code is based on Xsynth-DSSI, hence the imaginative name.
- slat - This is my soft-theremin. It was called "theremin", but now it's called "slat". Calling it theremin was a bit silly. Playing it is very simple, move the mouse pointer up and down to change pitch, left and right to change volume. Notes are printed on either side to make it easier to play.
DX-10 / JX-10
- Wat Syn is a 4-oscillator, modulatable wavetable synthesizer, another powerful instrument included in the Linux MultiMedia Studio (LMMS) Digital Audio Workstation
- TAL-NoiseMaker is an improved version of TAL-Elek7ro and has a completely new synth engine and a lot of improvements in sound and usability. The synth also includes a small effect section with a reverb, chorus and a simple bit crusher effect.
A display shows the knob and slider values. This allows more control over the synth. A ringmodulator and a syncable triangle are also part of this synth. TAL-NoiseMaker includes new filter types as the self resonating 6dB low pass and a notch filter. Its improved amplitude ADSR is very suitable for slow pads as for really fast envelopes. 128 factory presets included, 80 made by Frank "Xenox" Neumann / Particular - Sound.
distrho linux port available
- Xhip - a free software subtractive/hybrid synthesizer available for download as a plug-in. It correctly implements those features considered essential to a synthesizer capable of a wide variety of classic "bread and butter" sounds. Users of classic synthesizers should find it very comfortable and familiar as well as extremely fun to use. 
- https://github.com/nicoroulet/moog - a digital emulator of a minimoog synthesizer, built as an LV2 audio plugin for Linux.
- Minicomputer is a standalone Linux software synthesizer for creating experimental electronic sounds as its often used in but not limited to Industrial music, IDM, EBM, Glitch, sound design and minimal electronic. It is monophonic but can produce up to 8 different sounds at the same time. It uses Jack as real time audio infrastructure and can be controlled via Midi.
- Tunefish is a very tiny virtual analog synthesizer. It is developed to fit into about 10kb of compressed machine code while still producing an audio quality that can compete with commercial synthesizers. This site was created to make the VST/AU version of it available to the public. This plugin, unlike the version of TF which is used in 64k intros of our group Brain Control is of course larger, mainly because it has a UI and uses the excellent Juce framework for C++. (This is true for v4. v3 uses Qt and v2 uses the VSTGUI library.)
- https://github.com/cognitone/sprike - an extended version of Tunefish4 with modifications and enhancements added by Cognitone. While the actual sound synthesis was not changed (in fact, you can import your existing Tunefish4 presets), Sprike features a differently organized preset storage, 4 additional MOD sources, an on-screen keyboard, a level meter, tempo-controlled delay units, and a more complete MIDI implementation with bank plus program selection, in order to integrate more transparently with MIDI-controlled environments and conventions.
Mr. Alias 2
- Mr. Alias 2 uses non-bandlimited oscillators which can be transposed near to and beyond the Nyquist frequency, causing most of their spectra to be aliased back into audible non-harmonic frequencies. The sound can then be further processed by a number of crude "effects."
Universal VST, Mac AU.
- https://ineardisplay.com/plugins/legacy/ - 1.3 for Linux
- reMID - a MIDI interface to reSID
- https://github.com/ssj71/reMID.lv2 - This is a MIDI implementation of a MOS8580 6581 SID chip using the reSID library. It includes support for scripted instruments that allow complex sonic control of the chip.
Rave Generator VST
- Rave Generator VST - a free rompler VST synth, containing many of the classic sounds of the early rave / hardcore from the 90′s.
- https://github.com/milasudril/happychords - a software synthesizer for producing hooks like the one found in "Rosa Hellikopter" and other fast-paced dance tracks. It can also produce rock organ sounds or sweeping pads. LV2
- YouTube: Happychords
- Qin - an LV2 plugin for synthesizing plucking and striking sounds. The basic architecture is two oscillators feeding into a highpass filter followed by a lowpass filter. Unique to this synth are the envelopes which are designed to better mimic physical plucking and striking sounds.
- lv2_guitar - a simple plugin that is capable of physically simulating the vibrations of a guitar string using the Functional Transformation Method. The plugin is playable via MIDI. It is based in part on the VST-plugin 'FTM String' by Daniel Maaß, on the VST-plugin 'FTM Psycho String' by Alexander Müller and on the LV2-plugin 'Simple Sine Generator' by Nedko Arnaudov.
- CT-Synth - GUI toolkit for the Linux desktop and for Android tablets, running Android 4.4 or higher. Included is a demo project, a synthesizer.
- Psychosynth project aims to create an interactive modular soft-synth inspired by the ideas of the Reactable. We will try to provide a clean object oriented API to allow the creation of new innovative interfaces for the synthetizer and a 3D simulator of a Reactable-alike device with support for collaborative music creation over the internet. Our main goal is to create a free software alternative to allow newbies, developers and professionals explore new ways of making music.
- https://github.com/geraldmwangi/GuitarSynth-DPF - a set of wavetable synths controlled by a monophonic pitchdetector. Actually it is not specific to guitars but can be used for any harmonic instrument when playing single notes. This is a small petproject of mine to explore the possibilities of pitchdetection for Guitars. It uses aubio for pitch detection, but that will change as I want to write my own detector.
- https://github.com/grejppi/bytes - LV2 synth with four oscillators, 1-bit wavetables and hard sync
- fastbreeder - An experimental genetic programming synthesiser. This program is free software, developed for linux, using jack for audio. Fastbreeder is essentially a 4 button synth. The idea is to grow code by choosing from a range of automatically generated variations of functions, you don't have to know how they work, but each function creates a sound which can be selected by you. The following generation is then created containing mutants of your chosen sound. You can refine and develop the sound just by auditioning and choosing the best one each time.
- munt - A multi-platform software synthesiser emulating (currently inaccurately) pre-GM MIDI devices such as the Roland MT-32, CM-32L, CM-64 and LAPC-I. In no way endorsed by or affiliated with Roland Corp.
- Andes - a software synthesiser plugin in early stages of development. The core of Andes is an original oscillator which uses a pseudo-3D version of Perlin noise to produce distinctively digital sound.
- GuitarSynth - a set of wavetable synths controlled by a monophonic pitchdetector. Actually it is not specific to guitars but can be used for any harmonic instrument when playing single notes. This is a small petproject of mine to explore the possibilities of pitchdetection for Guitars. It uses aubio for pitch detection, but that will change as I want to write my own detector. Required: libjack, aubio
- Diodow Virtual Software Synthesizer - contains around 5% capabilities/features of it's mighty bigger brother - Tranzistow. But don't worry, despite those 5% it has enough capabilities to keep you busy for quite some time and very complex sounds can be made with 4x oscillators, 4x filters, 4x LFOs, 4x 5-stage envelopes, 16x+16x modulation matrix, 4x delays, etc.
- Tranzistow - a virtual software synthesizer with 4 or 8 independent multi parts. Although it is (to some extent) inspired by Waldorf Q, Waldorf Microwave II/XT, Alesis Andromeda, Oberheim Xpander, John Bowen Solaris and Yamaha DX series, it has a unique sound and tons of unique features not found on any other synthesizer. Various forms of synthesis are supported including Additive, Virtual Analog/Modeling (VA), Wavetable (with classic, crossfade and full wave interpolation modes), two completely independent FM engines, Ring Modulation, Oscillator Sync, Vectors, Rotors (as in Solaris), various filter models (SVF 12/24dB, 6dB to 24dB Transistor Ladder with fully configurable poles, 24dB Diode LowPass Ladder, ...), Filter Chaining, Comb Filters, WaveShaping, freely drawable Contour Generators, exhaustive FX section including Chorus/Flanger, Phaser, Delay and Reverb units, etc, etc. - $ (Diodow is the free version)
- https://github.com/ycollet/psi-plugins - super_welle: a 4 oscillator / 16 voice virtual analog unison synthesizer
- SigmaTizm - A standalone virtual additive synthesizer for Linux and Windows with MIDI support.
- https://github.com/erwincoumans/StkDekrispatorSynthesizer - Port of Dekrispator Synthesizer to Windows, Linux, Mac and Raspberry Pi. Original for STM32F4 is here: https://github.com/MrBlueXav/Dekrispator Using STK for midi and sound playback.
- https://github.com/switryk/jackpunkconsole - a sound synthesizer that emulates an Atari punk console. It is written in C and uses the Jack Audio Connection Kit. It has a Gtk3 interface and a midi connection through Jack, so it is possible to play sounds with a midi device. As it uses Jack for audio, it is possible to redirect the sound in a FX processors, recorders, or anything from fun to useful.
- https://github.com/switryk/punk-console.lv2 - Atari Punk Console LV2 plugin
- Xhip Follower - The Xhip synthesizer filter controlled by a HAR envelope follower.
- wigwamjam - grows sounds using your decisions to drive the evolution of genetically programmed synth functions.
- https://github.com/suhr/xephys - a microtonal digital waveguide synthesier that uses JACK for audio output and OSC for control.
- https://github.com/visstup/cloud-generator - Polyphonic 18 oscillator (9 sinusodial, 9 sawtooth) alias-free synthesiser with a sinusodial LFO modulating the frequency of each oscillator, a cubic distortion unit, and a third-order lowpass Elliptic (Cauer) filter. See the documentation for more information on the signal path.
- ZamSynth - Experimental plugin from ZamAudio
- Cadmium - a vector phase-shaping synthesizer. Vector phase-shaping (VPS) is an evolution of phase distortion, taken further in Cadmium with audio-rate modulation. This opens up a sound palette characterised by moving, morphing, shifting timbres – from snarling jungle bass to classic FM tones and everything inbetween.It has the accoutrements of a subtractive synth: a modelled filter, envelopes and LFOs for modulation, but with a fresh approach where it counts – the oscillators. Cadmium is now available for Windows, MacOS, and Linux.
- https://github.com/Themaister/airsynth - a simple polyphonic softsynth for LV2 (and JACK). It currently features three instruments.
- https://github.com/brummer10/Xmonk.lv2 - an LV2 toy, a simple sound generator to have some fun with.
- https://github.com/legionxvx/signal-generator - sin and square generators
- dexed - FM VSTi/AU plugin synthesizer. Dexed is a multi platform, multi format plugin synth that is closely modeled on the Yamaha DX7. Under the hood, it uses music-synthesizer-for-android for the synth engine and JUCE as a plugin wrapper. The goal of this project is to be a great tool/companion for the original DX7. Yes, the sound engine with 'float' values parameter; different waveform (a la TX81z) would be great but anything that goes beyond the DX7 should will be a fork of this project. This is to keep the compatiblity with the original synth.
- LegaSynth - an old chip/synthesizer emulator on top of an advanced software sound synthesis programming framework. It currently emulates the Yamaha DX7 FM Synth, the MOS6581SID (C64 soundchip), the Yamaha 2xxx FM series (very common in some personal synths, arcades, and the Sega Genesis), and the TB303. It supports the ALSA Sequencer API for midi input, and OSS/ALSA and JACK for output. A GTK graphical interface is provided to take full advantage of the synth, as well as for managing presets, patches, and banks, etc.
- https://github.com/ngeiswei/deicsonze - Emulator of the YM2414, the FM synthesizer of the Yamaha DX11 and TX81Z.
- 6PM - a phase modulation (PM) synthesizer made of six oscillators.
- Oxe FM Synth is an open source VST 2.4 instrument plugin for Windows, Linux and Mac OS X. Features: Multitimbral (16 MIDI channels); 8 operators (6 oscillators, 1 noise generator/limiter, 1 filter), all with envelope; 1 LFO per channel; frequency modulation half-matrix with self-modulation; global reverb and delay; great general performance in low resources systems; a lot of good quality patches included
- JuceOPLVSTi - VST instrument which emulates the Yamaha OPL sound chip used in PC sound cards from the 90s.
- YouTube: JuceOPLVSTi, OPL2 emulator!
- https://github.com/jpcima/adljack - OPL3/OPN2 synthesizer using ADLMIDI and OPNMIDI. This is a standalone synthesizer for ADLMIDI and OPNMIDI on the text console. It is based on libADLMIDI and libOPNMIDI. adljack is the version for the Jack audio system. adlrt is the portable version for Linux, Windows and Mac. Feature list: Real time, low latency FM synthesizer, Support of multiple FM chip emulators, Support of multiple chips for extended polyphony, Loading instrument banks in WOPL and WOPN formats, General MIDI level 1 and 2, Multi-channel MIDI playback, Automatic bank reloading when the file changes on disk, User interface for the terminal with dynamic controls, Session management with the NSM protocol (adljack only)
- https://github.com/jpcima/miniopl3 - A simple mono-timbral OPL3 plugin
- https://github.com/jpcima/ADLplug - Synthesizer plugin for ADLMIDI and OPNMIDI (VST/LV2)
- VOPM - Virtual FM synthsizer, like OPM
Ported to linux by the Jucetice Team at Anticore.org
- https://github.com/Themaister/libfmsynth - A C library which implements an FM synthesizer
- https://github.com/irmen/synthesizer - A waveform synthesizer that can generate different wave form samples: sine, triangle, sawtooth, square, pulse wave, harmonics and white noise. It also supports Frequency Modulation, Pulse-width modulation, and ADSR envelopes using LFOs.
- jack_miniFMsynth - tiny FM synthesizer, a JACK client and a client of the ALSA sequencer system. This example client is based on the example miniFMsynth.c.
To compile jack_miniFMsynth just type
cc -o jack_miniFMsynth jack_miniFMsynth.c -ljack -lasound -lm
jack_miniFMsynth takes several parameters:
jack_miniFMsynth <MIDI channel> <FM> <harmonic> <subharmonic> <transpose> <a> <d> <s> <r> <MIDI channel> MIDI channel for NOTE events <FM> Strength of the frequency modulation <harmonic> Harmonic of the master oscillator (integer) <subharmonic> Subharmonic of the master oscillator (integer) <transpose> Note offset for both oscillators (integer) <a> <d> <s> <r> Attack, Decay, Sustain, Release
- https://github.com/Wohlstand/OPN2BankEditor - A small cross-platform editor of the OPN2 FM banks of different formats
- https://github.com/Wohlstand/OPL3BankEditor - A small cross-platform editor of the OPL3 FM banks of different formats
- https://github.com/jpcima/genwopl - Generator of WOPL bank collection
- https://github.com/jpcima/fmprog - Automatic FM patch programmer with Genetic Algorithm
- https://github.com/sneakernets/Mighty-SoundBlaster - Recreation of famous Electronic, Electric, Reed, Theatre, and Pipe organs and their stops in OPL3 Synthesis.
- https://ftz.lyberta.net/projects/chiptune - provides synths for basic waveforms which were produced by programmable sound generators in the 1980s and 1990s. The project is in alpha state and there is no GUI. You need to use your DAW to automate parameters.
SocaLabs 8-bit synths
- https://github.com/ssj71/vst2413 - FM synthesizer based on YM2413 (OPLL) sound chip emulator
- ymVST - VST plug-in for authentic Atari ST chipsounds. Emulates the built in YM2149 sound chip with a decent plugin user-interface on your PC.
- https://github.com/ngeiswei/zynayumi - VST/DSSI/LV2 Synth based on ayumi, a highly precise emulation of the YM2149
- https://github.com/linuxmao-org/VL1-emulator - An emulator of Casio VL-Tone VL1, based on source code by PolyValens
- Aeolus is a synthesised (i.e. not sampled) pipe organ emulator that should be good enough to make an organist enjoy playing it. It is a software synthesiser optimised for this job, with possibly hundreds of controls for each stop, that enable the user to "voice" his instrument. First presented at the 2nd LAD conference in Karlsruhe, end of April 2004.
- GENPO - the GENeral Purpose Organ. It replicates the essential features of any pipe, theatre, or reed organ. GENPO reads a description of an organ (a .org XML file) and presents a suitable user interface for operating that organ. There are a number of high quality organ SoundFonts freely available and the .org file maps the stop sounds to organ divisions, manuals and stops. Other facilities such and couplers and presets are available. You may connect one or more MIDI keyboards to GENPO to provide the organ manuals, you can also assign one to be the 'pedalboard'.
- jOrgan - a Java-based MIDI processor. It is free software for complex transmitting and dynamical modifying of MIDI messages on their way between MIDI encoders and MIDI decoders, through an own MIDI Programming Language MPL. It can be used as Virtual Pipe Organ (virtual organ console). Runs on Microsoft Windows, Linux and macOS operating systems
- Beatrix is a MIDI-controlled, software synthesizer designed to imitate the sound and properties of the electromechanical organs and sound modification devices that brought world-wide fame to the names and products of Laurens Hammond and Don Leslie.
- setBfree - A DSP Tonewheel Organ emulator. setBfree is a MIDI-controlled, software synthesizer designed to imitate the sound and properties of the electromechanical organs and sound modification devices that brought world-wide fame to the names and products of Laurens Hammond and Don Leslie.
- GrandOrgue is a sample based pipe organ simulator. When connected to MIDI keyboards and an audio system, it can accurately simulate the sound of a real pipe organ. This application has builds for Linux, Windows and OS X.
- GrandOrgue sample sets - GrandOrgue sample sets
- Foo YC20 - This is a Faust implementation of a 1969 designed Yamaha combo organ, the YC-20. In addition to the Faust code, it has a Gtkmm UI with Jack audio and midi support. A LV2 instrument plugin is planned but not yet executed.
- horgand - a softsynth, really simple and easy to use, specially designed to produce organ sounds is also capable to generate other sound types like Electric Pianos (Rhodes, Wurlitzer, DX E.Piano), Jazz Guitar, Strings, Brass, Fretless Bass, Accordion etc. using low CPU resources. horgand is based on a FM audio synthesizer with twenty carriers (20) without modulators in a plain based algorithm. Each carrier frequency can be modified for construct complex sounds. The synthesizer incorporate also a LFO (Low frequency oscillator) for generate tremolo effects and detune effects applying LFO Pitch and Amplitude to the carrier frequency's. Some synthesizer parameters can be edited for each sound including two ADSR, (Normal and Percussion), Fine Frequency, Attenuation, Rotary Amplitude, Transpose, etc. Four DSP effects are available for obtain more complex sounds, Rotary, Chorus, Delay and Reverberation. Sounds are stored in banks of 32 organ sounds and can be changed externally with MIDI program change (1-32).
- https://github.com/Jools64/Hammond-Novachord-LV2-Plugin - A small lv2 plugin that attempts to emulate the sound of the Hammond Novachord
- ORGANTEQ Alpha - a new generation physically modelled pipe organ that reproduces the complex behaviour of the organ flue pipe. It is a small organ with a keyboard range of 4 octaves (from F1 to F5) and with 2 stops: a Flute 8' and a Flute 4' (octave).
It is provided in standalone mode only and should be regarded as a foretaste of a more advanced commercial version in development, due to be released during 2018.
- AZR-3 JACK - a port of the free VST plugin AZR-3. It is a tonewheel organ with drawbars, distortion and rotating speakers. The original was written by Rumpelrausch Täips. The organ has three sections, two polyphonic with 9 drawbars each and one monophonic bass section with 5 drawbars. The two polyphonic sections respond to events on MIDI channel 1 and 2, and an optional keyboard split function makes the bass section listen to the lower keys on channel 1. The three sections have separate sustain and percussion switches as well as separate volume controls, and the two polyphonic sections have separate vibrato settings. All three sections are mixed and sent through the distortion effect and the rotating speakers simulator, where the modulation wheel can be used to switch between fast and slow rotation, and the fast and slow rotation speeds themselves can be changed separately for the lower and upper frequencies.
- https://bitbucket.org/horo/connie/wiki/Home - Simple simulation of an electronic organ like e.g. Vox Continental. This project is a toolbox for creating an electronic organ program with JACK MIDI input and JACK audio output for Linux. Connie is a JACK application. It has one MIDI input and a stereo audio output.
- EplayOrgan - a brand new multi purpose organ by David Back, November and December 2017, intended to be playable by organists and versatile enough to be useful to everybody with an interest in organs. It will load and be playable almost instantly and does not need an expensive computer with huge amounts of memory. eplayOrgan was designed and tested on a 64 bit Windows 10 system but was always intended to be versatile in that it will run on any Windows system back to and including Windows XP. It will also run on any Mac or Linux system under Wine. All the basics are in place for producing native Mac and Linux versions in due course. Latency is negligable under Windows.
- Elka Panther - one of the most famous organs in 60s’ and 70s’ popular music. VST/AU plug-in.
- San Dysth - a standalone realtime soft-synth written in SND.This softsynth has controls to generate various kinds of sounds inbetween white noise and pure tones. It also provides controllers to disturb the generated sound by using a "period counter" to extend the variety of the generated output. Common usage for the softsynth is organ-like sound, organic-like sound, alien-like sounds, water-like sounds, and various kinds of noise (noise artists could find this softsynth most useful).
- MARVIN VST - freeware Windows
- VST Museum - freeware Windows
- SQ8L - an SQ80-emulating VSTi. Runs on Linux via Wine, but not on Windows????????
- http://synth1.com/ a software synthesizer for computer music use. It is VSTi/AU compatible. (AU version is beta now) The current version is freeware. Functionally it is modelled on the Clavia Nord Lead 2Red Synth ; with the following characteristics: 2 Oscillators + 1 sub Oscillator, FM modulation, ring modulation,sync,modulation envelope; 4 types of filters, distortion; 2LFO(synchronized with host); Arpeggiator (synchronized with host)
Tempo delay (synchronized with host), stereo chorus/flanger; Legato mode, portamento; 32 notes polyphony; 128 presets; Thoroughly optimized for light CPU load using SSE instructions etc.; Automation
- Bleep - a free VSTi synthesizer plug-in for Windows which inspired by the sound of MOS Technology SID. At the same time Bleep' is not emulator of this chipset but only partially similar to its architecture.
- Zebralette - has two LFOs (one per voice, one global), a multi-stage envelope and three on-board effects (chorus, EQ, delay). Not forgetting Zebra2's famous dual spectral effects, which include several squelchy filter algorithms. Windows/Mac.
- Podolski - a simple, CPU-efficient virtual analogue synthesizer. Basically a cut down version of FilterscapeVA with just one oscillator, one filter, one envelope and two LFOs, it also features a Zebra-style arpeggiator/sequencer plus chorus and delay effects. Podolski's specialities are the Click parameter (emphasizes the filter attack) and its ability to seamlessly morph between three waveforms (WaveWarp). Windows/Mac.
- TyrellN6 - based on a design similar to Roland's classic Juno 60, with a few modules and novel features. Linux/Windows/Mac
- Hive was made to be fast and simple. The streamlined single screen UI lets you dive into sound creation immediately. A fluid workflow invites you to tweak away until your sound is just right (or wrong in just the right way). Hive was engineered to be light on CPU, and won’t slow you down while you work. But being “fast and simple” doesn’t mean we’ve sacrificed sound quality or creative control - Hive is packed with features, controls and enough flexibility to deliver stunning sounds. Windows/Mac.
u-he Triple Cheese
- Triple Cheese is a unique-sounding freeware synthesizer plugin. Triple Cheese doesn't use any of the classic synthesis techniques – substractive, FM or additive – but various forms of comb filter i.e. very short chromatically tuned delays. The three cheese modules in a row either generate their own signal, or process the output of the previous module. Windows/Mac.
deputy Mark II
- deputy Mark II is a VST2.4 software instrument for Microsoft Windows
- Charlatan is a polyphonic, subtractive virtual analog (VA) synthesizer plugin with focus on sound quality and easy usability. It comes with a flexible, yet not overwhelming feature set which encourages artists to start tweaking instead of just relying on presets. Inspite of it's simplicity, Charlatan's architecture is flexible enough to create both classic sounds and rather experimental noises. While making no compromise about sound quality, the sound engine has been highly optimized for efficient CPU usage making Charlatan well suited as a "bread and butter" synth even in projects with a large number of plugin instances. Windows VST.
- Venom VB-303 is a win32 VST made with SynthEdit/SE_SDK2. It’s an approximation of the sound of a x0xb0x, and the sequencer of the TB-303.
- Caustic 3 - a music creation tool suite inspired by rack-mount synthesizers / samplers rigs. Everything is real-time and optimized for mobile devices. Windows VST.
- Defiant WT - Wavetable – Additive – Subtractive Hybrid / Polyphonic. Slick and compact but packs a powerful punch and a host of advanced features. Providing wavetable, additive and subtractive synthesis in an efficiently clever design with a unique modulation arsenal, Defiant WT is creative, grungy, intuitive, fun and to the point.
- metamorph - a waveform morphing synth with a bunch of envelopes, LFOs and onboard effects to guarantee movement on even the most vanilla note. Each oscillator can morph through a selection of waveforms in tempo sync or modulated by an envelope. It can also step through the waveforms, make each cycle a new waveform or even just stick with one waveform if you want. Throw in pitch modulation, 5 envelopes, 2 LFO’s, a ring mod / 3rd audio osc, variable state filter, distortion, delay and an arpeggiator and that held note will never sound the same again
- GalaXynth - a Workstation Synth from the future. With this baby, you’re done fiddling with neverending rows of knobs. Find the sound you need ASAP, stop messing around, start making music.
- Scylla - a 32 bit Windows VST instrument capable of sample-playback combined with subtractive synthesis to produce a wide variety of sonic possibilities ranging from lush pads to far-out soundscapes and effects via scorching leads and chunky bass. Scylla includes three different types of oscillators that can be modified to a wide variety of styles and three built-in samplers that can accommodate .wav audio samples, which can be played back in grain table, waveform, sample or single hit format. All the audio can be modified and modulated through LFO, volume and filter envelopes, Ring-Modulation, and Unison.
- Oatmeal - a two-oscillator subtractive synth.
- YouTube: X11 by BV Music
- Harmony Box - synth, win/mac vst/au
- basic 65 - a monophonic synth, inspired by the classic 80s home computer, the Commodore 64 and its legendary SID chip. Building on the waveforms and signal path of this famous chip, basic 65 adds further features and options to take things a step further. The double arpeggiator allows complex versions of that retro 8-bit game sound and the modulation options inspire experimentation via the mod envelope and 2 comprehensive LFOs. Pulse width modulation, ring modulation and oscillator detune/sync are key ingredients in the signature sound. Throw in some pitch drift, bit drift, a sprinkle of dirt and randomisation and you have a wide range of lofi, chiptune, retro-tastic sounds at your disposal.
- Preparation P - a VSTi collection of 61 high quality prepared piano samples. All of these samples were recorded by Tom Gersic on a baby-grand piano, and include a variety of strummed strings, plucked strings, and many other sounds of various objects lodged in the strings. Each sample can be tuned individually, and you can also adjust the attack, decay, sustain, and release characteristics of the sound by using the envelope controls.
- SmallQoo - 8voice poly Compact Synth. Win VST.
- Metatron - a 2 oscillator analog synthesizer with an arpeggiator that works alongside a gated modulation sequencer for creating unique rhythmic patterns and sounds. The oscillator section uses waveforms that double up to create a phasing effect similar to pulse width, but for each waveform. This along with a powerful unison detune section and ring modulator give Metatron a rich, fat sound. With the addition of versatile graphical envelopes, LFOs and other modulation options, Metatron becomes an instrument that can create complex sounds, but at the same time keeps it simple without trying to do everything, making it a perfect 'go to' synth for one-finger basslines, rhythmic techno leads, spacey gated pads and other creative arpeggiated sequences. Win VST.
- Photon - a hybrid synth with an with an experimental 'warp' engine for creating evolving rhythmic sequences, random arpeggios and classic Sample&Hold style arcade weirdness. Win VST.
- Subconscious - Hybrid Sequencer Synth. Subconscious is a dual arpeggiation sequence synth with oscillator crossfading, feedback modulation, and independent filter and amp envelopes for both oscillator sections. Subconscious has two different onboard sequencers, a gate sequencer and a modulation sequencer, which can be used for stepped sequences, gated pads and modulation of the pitch and filters. Win VST.
- blooo - a VST 2.4 polyphonic software synthesizer plug-in for Microsoft Windows® (both 32 and 64 bit) based on the classic subtractive synthesis architecture. It is written in native C++ code for high performance even on "lighter" systems.
- scrooo - a VST 2.4 polyphonic software synthesizer plug-in for Microsoft Windows® (both 32 and 64 bit) based on a spectral formant synthesis architecture and written in native C++ code for high performance.
- YouTube: The Scrooo
- qyooo - a VST 2.4 polyphonic software synthesizer plug-in for Microsoft Windows® (both 32 and 64 bit). It is written in native C++ code for high performance and low CPU consumption.
- Ragnarök - a VST 2.4 software instrument for Microsoft Windows® simulating a custom-built one-of-a-kind analog synthesizer from 1980. It is written in native C++ code for high performance and low CPU consumption.
- Nabla - a VST 2.4 software instrument for Microsoft Windows® simulating the KORG Delta DL-50 Strings Synthesizer from 1979. Is is written in native C++ code for high performance and low CPU consumption.
- deputy Mark II - a VST 2.4 software instrument for Microsoft Windows® (both 32 and 64 bit) in the tradition of classic string machines and early "polyphonic" synthesizers, written in native C++ code for high performance.
- Kern - a VST 2.4 polyphonic software synthesizer plug-in for Microsoft Windows® (both 32 and 64 bit) designed to run with and to be fully controlled by modern MIDI keyboard controllers like the Novation® Impulse™. It is written in native C++ code for high performance and extremely low CPU consumption.
- Mono/Fury - a VST 2.4 software synthesizer plug-in for Microsoft Windows® (both 32 and 64 bit) emulating the classic KORG Mono/Poly® analog synthesizer of the early 1980's. It is written in native C++ code for high performance even on "lighter" systems.
- ModulAir - a modular polyphonic software synthesizer for Microsoft Windows (VST) and Apple macOS (VST/AU) written in native C++ code for high performance and low CPU consumption. WARNING! ModulAir is a work in progress, unfinished, buggy, as of now with only a few quirky presets. Expect horrible things to happen. It is a clumsy unhandy complicated piece of software.
Formant Classic Advanced
- Formant Classic Advanced - an extended Donation Ware version of the "Formant Classic" Free Ware version based on the legendary Elektor Formant DIY (Do It Your self) synthesizer of 1977/78 . It is available as a standalone version and VSTi plugin version for Microsoft based computers.
- Substance - a virtual analog software synthesizer (VSTi) emphasizing simplicity, flexibility, and sound quality. The key factors in the design of Substance were that it should sound great, without effects, and that it should all fit on one page.
- TW-PitchShop - Versatile Mono/Poly Synth with portamento. Loads of controls to create (or adjust) sounds, divided over different screens. Easy to use interface, very understandable for beginners and experts. Interface ±840 pixels wide, height about 440 pixels.
- TW-WhiteWidow - Versatile Mono/Poly Synth with portamento. Loads of controls to create (or adjust) sounds, divided over different screens. Easy to use interface, very understandable for beginners and experts. Interface 810 pixels wide, height 619 pixels. Patchbank with 128 sounds.
- http://www.technowitch.nl/vst-pvmspecial.html TW-PVM Special] - Versatile Mono/Poly Synth with Noise Oscilator. Loads of controls to create (or adjust) sounds, divided over different screens. Easy to use interface, very understandable for beginners and experts. Interface 722 pixels wide, height 343 pixels. Patchbank with 64 sounds.
- Eclipsis - full featured hybrid wavetable synthesizer with 3 oscillators, 6 LFOs, 118 waveshapes, 39 modulation targets, 2 effects racks and unique preset randomization! And all of that in new attractive design!
- U.F.O. Zone Edition - (VSTi) is upgraded version of original U.F.O. plugin with some updates, improvements and fixes. It is a subtractive synthesizer with three oscillators and some preset randomization function.
- Charlatan - a polyphonic, subtractive virtual analog (VA) synthesizer plugin with focus on sound quality and easy usability. It comes with a flexible, yet not overwhelming feature set which encourages artists to start tweaking instead of just relying on presets. Inspite of it's simplicity, Charlatan's architecture is flexible enough to create both classic sounds and rather experimental noises. While making no compromise about sound quality, the sound engine has been highly optimized for efficient CPU usage making Charlatan well suited as a "bread and butter" synth even in projects with a large number of plugin instances.
- The Viking - uses additive synthesis to produce Dynamic Tonality tunings and timbres. Scale pitches result from successive additions and subtractions of a period (e.g., an octave) and a generator (e.g., a perfect fifth). The period and generator can be set to any size, making a wide variety of microtonal tunings easily accessible.
- 2032 - a Dynamic Tonality physical modeling (modal) synth. It emulates the sound of a pitched physical object (string, pipe, plate) mounted on an unpitched physical body (guitar body, djembe body, drum shell, etc.) that is excited by a hammer, breath, bow, or live audio input. It supports a wide range of microtonal tunings and the partials of its sounds can be retuned so as to match the underlying tuning, thereby minimizing sensory dissonance. It supports tunings produced by a period and a generator of any sizes (for standard Western tunings, the period is the octave and the generator is the perfect fifth).
- Transformer - a Dynamic Tonality analysis-resynthesis synth. It transforms an audio sample, or live audio, by separating it into pitched components (partials) and noise. The amplitudes and frequencies of the partials, and the balance between noise and pitch can then be dynamically adjusted. As with all Dynamic Tonality synths, it supports a wide range of microtonal tunings and the partials can be retuned to match the underlying tuning, thereby minimizing sensory dissonance. The tunings are produced by a period and a generator (for standard Western tunings, the period is the octave and the generator is the perfect fifth). The sizes of both can be freely adjusted to morph between many diverse tunings.
- https://github.com/PentagramPro/OwlBass - an additive single voice bass synthesizer. It is avaliable as VST and AU plugin as well as standalone app.
- Odo's Classic VST instruments - Windows VST
- Dream 64 - inspired by the SID chip from the old but good Commodore c64, of course with some extra features added for fun.
Harsh Digital Nose
- Harsh Digital Nose a synthesizer that converts two images into two oscillator waveforms and then mixes them in various horrible ways. You can drag and drop images or draw them on the plugin in real time.
Windows/Mac VST, Mac AU.
- Chip32 - small wave table synthsizer VST Plugin for Win
- DvnSfxMaker - a VST/AU plugin to create sound effects for games. Features: 3 Oscillators (Sin, Triangle, Tan, Square, Saw, Breaker, Whistle) + White and Pink Noise. AHDSR envelopes for filter and amplitude. Pitch Envelope. Low and Hi pass filters with resonance. Pitch jump. Random preset generator. Built-in bitcrusher. Settings history. 4 notes polyphony.
SANA 8BIT VST
- https://github.com/COx2/SANA_8BIT_VST - VSTi project made by JUCE 5.3.1 Library. "SANA 8BIT VST" is name of the Synthesizer. It has a Oscillator, pitch sweep function, vibrato function and Wave scope. Oscillator can switch several waveforms and has ADSR function. And you can write own waveform on the WAVEFORM MEMORY component.This is a windows 32bit/64bit Application. It builded as DLL format. And you can install your DAW easily.
- GSinth - Free VST synthesizer from GVST. 3 oscillators with independent settings can be used to create interesting, evolving sounds. Randomise buttons allow for quick experimentation with sounds.
- GSinth2 - Free VST synthesizer from GVST. 3 oscillators with independent settings can be used to create interesting, evolving sounds. Builds on the simpler GSinth with additional waveform and noise generators. Randomise buttons allow for quick experimentation with sounds.
Little Spiral Generator
- Little Spiral Generator - free VST/AU by Soundemote
Rhythm and Pitch Generator
- Rhythm and Pitch Generator - an analog-style arpeggiator that can be run at audio rate for a quirky sound generator or locked to a tempo to generate inspiring melodic and rhythmic phrases based on a seed-based random sample-and-hold.Features Robin Schmidt's TriSaw morphable oscillator which can be morphed (not crossfaded!) into tri, saw, square, sine, anti-sine, and everything inbetween, giving tones that range from chiptune squares to warm analog saws. free VST/AU by Soundemote.
- http://www.uisoftware.com/MetaSynth - mac, $
- https://github.com/7402/mbeep - Mac or Linux beep tool plays a series of sine-wave tones on the audio output or writes to a .wav file. Tones are specified by freq and length, MIDI notes, or text to be sent as Morse code.
- https://github.com/michelesr/jack-oscillator - Single oscillator with traditional waveforms for JACK (Jack Audio Connection Kit)
- pjbsynth - csound script takes MIDI input and produces audio output. It is still at an early release stage, and is likely to change even in important details like Patches and Controller-numbers. Channels 0-8 are dedicated to Audio signals. The basic Patches are simple, old-fashioned waveforms like sine, triangle, square, and sawtooth, plus some fractal waveforms, and also live or file audio. The Channel Controllers for these Audio channels can be set by the normal methods, or one or two of them can be driven by a built-in Low-Frequency-Oscillator by using the non-standard controllers cc20 to cc23, or cc24 to cc27, or by a built-in Attack-Envelope using cc52 to cc53. Other non-standard controllers offer also Ring modulation, Distortion, some unusual types of Loop, etc. Channel 9 is dedicated to a low-tech percussion-set using simple waveforms like sine or white noise. It is roughly modelled on General-MIDI Channel 9. Channels 10-15 are dedicated to the Low-Frequency-Oscillators, where MIDI-note number 60 means not middle-C, but 1 Cycle-per-second (i.e. eight octaves lower!).
- Cursynth - a polyphonic music synthesizer that runs graphically inside your terminal. You can play Cursynth as a standalone soft-synth with your computer keyboard or MIDI keyboard.
- https://github.com/BramGiesen/synth - Command line FM-synth written in C++. Uses jack for audio. For this project I used some code examples from Marc Groenewegen and Ciska Vriezenga.
See also WebDev#Web Audio API
Test Signal Generator
- Test Signal Generator - A no-frills test-signal generator plugin with 7 operation modes: Sine Wave 1kHz. Sine Sweep 20Hz to 20KHz (at most to samplerate / 2) in 10 seconds, Square Wave 1kHz, Uniform White Noise, Gaussian Shaped White Noise, Pink Noise, Impulses (1 sample spike) 100 Hz, 0dBFS
One Hand Synth
- One Hand Synth - a musical instrument for tablets running Android 2.2 or higher. Choice from 2 sound sources: a Moog-like synthesizer and a Hammond-like organ. These can be played with one of 3 on-screen keyboards. Preset patches as well as manual controls.
- SynprezFM - a full-fledged Yamaha DX7 emulator for Android
- https://github.com/onesuper/geekmusic - electronic organ game in DOS
- https://github.com/paulbatchelor/voc_demo - A realtime demo of Voc, a vocal tract physical model. With the exception of RtAudio (released under the permissive STK license, included here), all code here is licensed under public domain.
- Spicy Guitar - a free physically modelled acoustic guitar synthesizer.
- DIMPLE - Dynamically Interactive Musically PhysicaL Environment an implementation of a physical dynamics environment which can be controlled via OSC, so that audio projects such as PureData can create physical objects in a virtual space, and then let them interact with each other, colliding and otherwise moving around. Data about objects' position and acceleration, for example, can be retrieved and then used to affect some sort of audio synthesis. It is a part of the "force feedback for audio systems" IDMIL project and was first presented at NIME 2007.
- https://github.com/jpcima/string-machine - Digital model of electronic string ensemble instrument. DPF.
- Argotlunar - a tool for creating surreal transformations of audio streams. Specifically, it is a real-time delay-line granulator. It disintegrates an audio stream into short samples (grains). Each grain can have random settings of amplitude, panning, duration, delay, pitch, glissando, filter and envelope. The output of all grains is mixed together into a stream which can be fed back into the main input. Time-related parameters can be synced to the host tempo, for rhythmic and pulsing textures. Pitch-related parameters can be quantized for harmonic and melodic effects. Feedback can create chaotic, densely layered, and distorted sounds.
- Soundgrain - a graphical interface where users can draw and edit trajectories to control granular sound synthesis. Soundgrain is written with Python/WxPython and uses Pyo as its audio engine.
- Slicer - allows you to create rhythms and textures from any sound you import by moving the Slicer nodes. Slicer will chop your sound into slices and superpose them. The slices will be created and manipulated acording to the position of the control nodes (the ones represented by a square). The slicer nodes (in color) control volume (vertical) and pan(horizontal) of each slice, while the control nodes control pitch, lenght, shift and starting point for all the slices.
Hadron Particle Synthesizer
- Hadron Particle Synthesizer - granular synthesis tool. In fact it is such a complete implementation of granular synthesis we’ve renamed the technique to particle synthesis. The plugin is of course free and open source. Hadron can be used as a synthesizer or an audio effect. It can also seamlessly morph between different sound processing methods, so you can make the plugin gradually change from synthesizer to audio processing mode. This is all part of the state morphing system, accessible via the big 2D joystick control.
- Cabbage Audio Forum: -Announce- Hadron for Cabbage - Cabbage recipes
- https://github.com/ssj71/hadron-particle-synth - Fork of hadron particle synth (http://www.partikkelaudio.com) to try to get it working on linux
- Narrativas Sonoras - a very simple audio granulator. Its original design dates back to end of 2006. for Macintosh, for Windows, for Linux or the source code. It is based on Processing and you might need to install a recent version of Java.
- Borderlands - an interactive granular sampler
- Cumulus - a software-synthesizer with following features: Implements the Asynchronous Grain Synthesis which is very multifaceted. Fully realtime capable. MIDI-Port to Controllerboxes (all parameters can be controlled via MIDI!), Keyboards (Polyphony, 8 voices) and Sequencers. Convenient GUI with drawable envelopes for each parameter. Internal 32 bit sampling resolution and a multiple of the external sampling rate. Cumulus was originally developed as a parallel application on a cluster of LINUX-workstations. I used a cluster of 7 Pentium-233 nodes, connected by the very fast "Easynet" network which was developed by the Institute of Electronics at the ETH Zuerich (Switzerland). I hacked the code to run on a single PC and I achieve about the same performance on a single modern PC (Thunderbird-800). The code runs on any GLIBC LINUX distribution with QT Devel >= 2.0 (GUI) and AFsp (a library to load and store .wav-files) installed. Note that the code is published under the GNU GPL.
- Loomer Cumulus - a granular sampler which radically transforms sample content by breaking it into tiny slithers of audio called grains and reorganizing them to form new sounds. Cumulus is capable of a wide ranges of timbres: from evolving atmospheric soundscapes; to organic physical textures. Up to eight Scenes can be created; a Scene corresponding to a particular sample position and set of synthesis parameters. Scenes can be played in realtime via MIDI, or arranged internally using the built-in sequencer. Cumulus is available free on the cover-mounted DVD of Computer Music magazine from issue 170 and onwards. Cumulus is supported on Mac OS X (VST, AU, RTAS, and Standalone), Windows (VST, RTAS, and Standalone), and Linux (VST, Standalone), and natively supports 64-bit for VST, Audio Unit, and Linux Standalone formats. - $
- https://github.com/linuxmao-org/Frontieres - An Interactive Granular Sampler (unofficial fork)
- cassetter - by person0b, a MIDI controlled granular sampler. It was created as a companion application to the livecoding environment ORCΛ. Powered by ToneJS, Svelte and Electron.
Windows / Mac
Atomic Cloud Grain Cloud Generator
- Atomic Cloud Grain Cloud Generator takes an audio file as input, and generates a granular synthesis grain cloud in real time. Grain clouds are played back through your speakers, and can also be rendered direct to disk, while you listen, for further processing.
- R_MEM - Granulator. The download contains the unlocked installers. OS X and Windows.
- Granny - a real-time granular synthesizer for Windows.
- therapy - 3 band granulizer effect with absolutely no ability to deliberately control any parameter. Windows VST.
- HourGlass - a standalone application intended for radical sound processing by taking fragments (more commonly referred to as "grains" in other similar software) from sound recordings, to create sound textures. It is not intended for minor transparent corrections of playback speed or pitch, but is rather placed firmly in the sound mangling/glitch territory.
- GGrain - Free VST plug-in for granular resynthesis, GVST. Cuts audio up into tiny grains and recreates it. Great for interesting, lo-fi effects.
- https://github.com/chronopolis5k/Grainstation-C - an open-source, granular performance workstation designed to build realtime, evolving sound sculptures with optional ambisonics. It seamlessly integrates with a Novation LaunchControl XL Mark 2 (easily modifiable for any other controller) and can processes 4 disk tracks and 3 live input streams. You can save any state as a snapshot and morph to that snapshot at any point in a performance. It has 6 independent pitch delay lines, 6 switchable low pass and high pass filters, live audio looping and multiple granular processing controls including granular time-stretching, frame animation and granular pitch shifting.
- YouTube: Grainstation-C | Free, Granular Performance Workstation with Ambisonics (3D, Spatial Audio)
- https://github.com/kneitinger/syncrose - An LV2 audio plugin for granular synthesis
- https://en.wikipedia.org/wiki/Concatenative_synthesis - a technique for synthesising sounds by concatenating short samples of recorded sound (called units). The duration of the units is not strictly defined and may vary according to the implementation, roughly in the range of 10 milliseconds up to 1 second. It is used in speech synthesis and music sound synthesis to generate user-specified sequences of sound from a database built from recordings of other sequences. In contrast to granular synthesis, concatenative synthesis is driven by an analysis of the source sound, in order to identify the units that best match the specified criterion.
- PySoundConcat - A python script for generating granular synthesis driven representations of audio files based on audio database analysis.
- https://github.com/carthach/rhythmCAT - VST for rhythmic concatenative synthesis
One-line algorithmic C
- https://github.com/kragen/viznut-music - a collection of the programs from Algorithmic symphonies from one line of code -- how and why
- https://github.com/greggman/html5bytebeat - the name of type of music made from math.You provide a function who's only input is time t and from that write some code to generate a sound.
- https://github.com/kragen/ar_bytebeat - a bytebeat synthesizer implemented on the Arduino. It's not the first bytebeat synthesizer on the Arduino, but I think it's the first that does real-time composite video visualizations of the signal, using the TVout library hacked to remove its audio output.
- https://github.com/linuxmao-org/EVALUA - A math synth plugin, unofficial DPF port