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Awesome Open Source Synthesizers

An awesome list of open source synthesizer projects.

Contents

• Modular
  • Audio source (things that can generate frequencies above 20Hz)
  • Audio processing (filter, amplifier, ring modulator, frequency shifter, waveshaper, distortion)
  • Modulation source (LFOs, EGs, gates, triggers, random voltages, offset generators)
  • Modulation processing (logic functions, sample and hold, slew limiter, comparator, inverter, quantizer)
  • Routing (mixer, switch, mult)
  • Audio effects (delays, DSP, phaser, pitchshifter)
  • Other/utility (oscilloscope, lights, MIDI-to-CV, etc)
  • Full Voice
• Standalone

Modular

Audio Source

• Eurorack

  • Oscillator
    • Braids : Macro-oscillator (Mutable Instruments - Braids)
    • Edges : Quad chiptune digital oscillator (Mutable Instruments - Edges)
    • Rings : Resonator (Mutable Instruments - Rings)

Audio Processing

• Eurorack

  • Filter
    • Jove : Roland Jupiter 6 inspired multimode filter in 14HP Eurorack format (System80 - Jove)
    • Ripples : Liquid 2-pole BP, 2-pole LP and 4-pole LP filter (Mutable Instruments - Ripples)
    • Shelves : Eq filter (Mutable Instruments - Shelves)
    • Streams : Dual dynamics gate (Mutable Instruments - Streams)
  • Waveshaper
    • Warps : Meta-modulator (Mutable Instruments - Warps)
  • Amplifier
    • Mikrophonie : 4hp contact mic pre-amp module (Music Thing Modular - Mikrophonie)
    • Ears : Contact Microphone (Mutable Instruments - Ears)
  • VCA
    • Veils : Quad VCA (Mutable Instruments - Veils)

Modulation Source

• Eurorack

  • LFO

    • Swirls : Tides in an 8hp footprint
    • Tides : Tidal modulator (Mutable Instruments - Tides)
    • Wobbler : Advanced LFO (TINRS - Wobbler)

  • Sequencer

    • Tuesday : Procedural Sequencer (TINRS - Tuesday)

    • Turing Machine Mk2 : Random Looping Sequencer (Music Thing Modular - Turing Machine Mk2)

    • Turing Machine Mk2 expander - Volts : Expander for the Turing Machine Mk2 (Music Thing Modular - Volts Expander

    • Turing Machine Mk2 expander - Pulses : Expander for the Turing Machine Mk2 (Music Thing Modular - Pulses Expander)

    • Turing Macine Mk2 expander - Voltages : Expander for the Turing Machine Mk2 (Music Thing Modular - Voltages)

    • Grids : Topographic drum sequencer (Mutable Instruments - Grids)

  • Envelope Generator / ADSR

    • Edgecutter : Visual envelope (TINRS - Edgecutter)
    • Peaks : Envelope/LFO/tap LFO/Drum generator (Mutable Instruments - Peaks)
    • Tides : (Mutable Instruments - Tides)

  • CV Generator

    • T_μ : 8hp version of the Temps utile 6x clock generator by MXMXMX (MXMXMX - Temps Utile)
    • O_c : 8hp version of ornament and crime polymorphic CV generator by MXMXMX (MXMXMX - Ornament & Crime)

Modulation Processing

• Eurorack

  • Logic Functions
    • Branches : Dual Bernoulli Gate (Mutable Instruments - Branches)
  • Inverter
    • Blinds : Quad VC-polarizer (Mutable Instruments - Blinds)
  • Sample and Hold
    • Kinks : S&H, rectifier, analog logic, noise (Mutable Instruments - Kinks)

Routing

• Eurorack

  • Mixer
    • Tripple Attenuverter Mixer v2 : Three precision attenuators/attenuverters
    • Links : Buffer, mixer (Mutable Instruments - Links)
    • Frames : Keyframer/mixer (Mutable Instruments - Frames)
    • Shades : Attenuator/offset/mixer (Mutable Instruments - Shades)

Audio Effects

• Eurorack

  • Reverb
    • Clouds : Texture synthesizer (Mutable Instrument - Clouds)

Other/Utility

• Eurorack

  • Mixer

    • Tripple Attenuverter Mixer v2 : Three precision attenuators/attenuverters

  • Amplifier

    • Mikrophonie : 4hp contact mic pre-amp module (Music Thing Modular - Mikrophonie)

  • MIDI-to-CV

    • Yarns : MIDI interface (Mutable Instruments - Yarns)

Full Voice

• Eurorack

  • Elements : Modal Synthesizer (Mutable Instruments - Elements)

Standalone

• The Klangorium - Hardware and tutorials for the Hackaday / Logic Noise Klangorium demo board