Tools / Fledge Synth

Fledge Synth

Download fledgetone-fledge-synth.zip (868 KB) README.md

Part of Fledgetone (https://fledgetone.com), © Martin Swanson, GPL-3.0-or-later. Source code: https://github.com/martinmswanson-cmd/fledgetone

Fledgetone's own synthesizer, built to WebAssembly, with a small wrapper so you can play it in any web page or browser game through the Web Audio API.

• Two wavetable oscillators, each with up to 16 unison voices, FM, a sub and noise
• Two filters (low-pass, ladder, band-pass, high-pass, notch, comb and formant)
• Envelopes, four LFOs that can keep time with your music, a mod matrix and four macros
• Drive, EQ, chorus, phaser, delay, reverb and an OTT-style compressor
• 57 presets: basses, leads, keys, chords, pads and effects

What's in this zip

Try it

Serve this folder and open index.html (AudioWorklets don't run from a file:// page):

npx serve

Use it

import { FledgeSynth } from './fledge-synth.js';

const context = new AudioContext();
const synth = await FledgeSynth.create(context, { preset: 'Lead/Supersaw', tempo: 120 });
const volume = new GainNode(context, { gain: 0.3 });
synth.connect(volume).connect(context.destination);

button.onclick = async () => {
  await context.resume();                         // browsers start sound only after a click
  const t = context.currentTime;
  synth.noteOn('C4', 100, t);                     // a note number (60) or a name, velocity 1 to 127
  synth.noteOff('C4', t + 0.5);
};

synth.setParam('Cutoff', 0.4);                    // every parameter is 0 to 1
synth.setParam('Filter type', 'Ladder');          // a choice also takes its option's name
synth.setParam('Reverb on', true);
await synth.setPreset('Bass/Wobble');

The calls:

It works in an OfflineAudioContext too, to render sound to a buffer.

The synth's own Level parameter starts at -14 dB and a safety clipper keeps every note under -1 dB, but a stack of loud notes can still be loud: keep a volume control after it.

Presets

A preset's macros are the parameters Macro 1 to Macro 4: each moves several things at once.

Parameters

Every parameter is a number from 0 to 1. Knobs go from their lowest to their highest setting; switches are off below 0.5 and on above. Starts at is how each is set when a synth is made (before a preset is chosen).

Choices

These parameters are choices. Set them by the option's name, for example synth.setParam('LFO 1 shape', 'Wobble').

• Sub octave: −1 octave, −2 octaves
• Noise route: Filter 1, Filter 2, Both filters, Straight out
• Sub path: With the voices, Clean, after effects
• Filter type: Low pass 12, Low pass 24, Ladder, Band pass, High pass 12, High pass 24, Notch, Comb +, Comb −, Formant, Off
• Filter 2 type: Low pass 12, Low pass 24, Ladder, Band pass, High pass 12, High pass 24, Notch, Comb +, Comb −, Formant, Off
• Pitch envelope curve: Exponential, Linear
• Drive type: Off, Soft, Warm, Hard clip, Fold, Asymmetric, Tube, Bitcrush, Downsample
• Pre drive type: Off, Soft, Warm, Hard clip, Fold, Asymmetric, Tube, Bitcrush, Downsample
• Band drive type: Off, Soft, Warm, Hard clip, Fold, Asymmetric, Tube, Bitcrush, Downsample
• Chaos rate (sync): 4 bars, 2 bars, 1 bar, 1/2., 1/2, 1/4., 1/2T, 1/4, 1/8., 1/4T, 1/8, 1/16., 1/8T, 1/16, 1/16T, 1/32, 2 bars., 1 bar., 1/1T, 1/32., 1/32T, 1/64
• Random repeat: Never, 1 bar, 2 bars, 4 bars
• Voices: Poly, Mono, Legato
• Glide mode: Always, Legato only
• Glide rate: Constant time, Constant rate
• Glide curve: Exponential, Linear
• Phaser mode: Phaser, Flanger
• Delay time (sync): 4 bars, 2 bars, 1 bar, 1/2., 1/2, 1/4., 1/2T, 1/4, 1/8., 1/4T, 1/8, 1/16., 1/8T, 1/16, 1/16T, 1/32, 2 bars., 1 bar., 1/1T, 1/32., 1/32T, 1/64
• A table: Basic shapes, Pulse width, Dark saw, Vowels, Harmonic sweep, Growl FM, Metal FM, Fold, Sync sweep, Organ, Octave stack, Digital, Resonant, Screech, FM 1:2, Random harmonics, User table
• A stack: Off, Octave, 2 octaves, Fifth, Fifth + octave, Major, Minor, Sus 4
• A warp: Off, Sync, Bend +, Bend −, Squeeze, Mirror, Quantize, Fold, Ring
• A route: Filter 1, Filter 2, Both filters, Straight out
• B table: Basic shapes, Pulse width, Dark saw, Vowels, Harmonic sweep, Growl FM, Metal FM, Fold, Sync sweep, Organ, Octave stack, Digital, Resonant, Screech, FM 1:2, Random harmonics, User table
• B stack: Off, Octave, 2 octaves, Fifth, Fifth + octave, Major, Minor, Sus 4
• B warp: Off, Sync, Bend +, Bend −, Squeeze, Mirror, Quantize, Fold, Ring
• B route: Filter 1, Filter 2, Both filters, Straight out
• LFO 1 shape: Sine, Triangle, Saw up, Saw down, Square, Wobble, Steps, Drift, Pump, Drawn 1, Drawn 2
• LFO 1 rate (sync): 4 bars, 2 bars, 1 bar, 1/2., 1/2, 1/4., 1/2T, 1/4, 1/8., 1/4T, 1/8, 1/16., 1/8T, 1/16, 1/16T, 1/32, 2 bars., 1 bar., 1/1T, 1/32., 1/32T, 1/64
• LFO 1 mode: Free, Retrig, Envelope, Sustain env
• LFO 1 retrigger: As the voices, Always, Legato continues, Never
• LFO 1 target 1: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• LFO 1 target 2: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• LFO 2 shape: Sine, Triangle, Saw up, Saw down, Square, Wobble, Steps, Drift, Pump, Drawn 1, Drawn 2
• LFO 2 rate (sync): 4 bars, 2 bars, 1 bar, 1/2., 1/2, 1/4., 1/2T, 1/4, 1/8., 1/4T, 1/8, 1/16., 1/8T, 1/16, 1/16T, 1/32, 2 bars., 1 bar., 1/1T, 1/32., 1/32T, 1/64
• LFO 2 mode: Free, Retrig, Envelope, Sustain env
• LFO 2 retrigger: As the voices, Always, Legato continues, Never
• LFO 2 target 1: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• LFO 2 target 2: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• LFO 3 shape: Sine, Triangle, Saw up, Saw down, Square, Wobble, Steps, Drift, Pump, Drawn 1, Drawn 2
• LFO 3 rate (sync): 4 bars, 2 bars, 1 bar, 1/2., 1/2, 1/4., 1/2T, 1/4, 1/8., 1/4T, 1/8, 1/16., 1/8T, 1/16, 1/16T, 1/32, 2 bars., 1 bar., 1/1T, 1/32., 1/32T, 1/64
• LFO 3 mode: Free, Retrig, Envelope, Sustain env
• LFO 3 retrigger: As the voices, Always, Legato continues, Never
• LFO 3 target 1: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• LFO 3 target 2: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• LFO 4 shape: Sine, Triangle, Saw up, Saw down, Square, Wobble, Steps, Drift, Pump, Drawn 1, Drawn 2
• LFO 4 rate (sync): 4 bars, 2 bars, 1 bar, 1/2., 1/2, 1/4., 1/2T, 1/4, 1/8., 1/4T, 1/8, 1/16., 1/8T, 1/16, 1/16T, 1/32, 2 bars., 1 bar., 1/1T, 1/32., 1/32T, 1/64
• LFO 4 mode: Free, Retrig, Envelope, Sustain env
• LFO 4 retrigger: As the voices, Always, Legato continues, Never
• LFO 4 target 1: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• LFO 4 target 2: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• Mod 1 source: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 1 target: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• Mod 1 curve: Linear, Exponential, Logarithmic, S-curve
• Mod 1 via: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 2 source: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 2 target: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• Mod 2 curve: Linear, Exponential, Logarithmic, S-curve
• Mod 2 via: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 3 source: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 3 target: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• Mod 3 curve: Linear, Exponential, Logarithmic, S-curve
• Mod 3 via: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 4 source: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 4 target: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• Mod 4 curve: Linear, Exponential, Logarithmic, S-curve
• Mod 4 via: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 5 source: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 5 target: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• Mod 5 curve: Linear, Exponential, Logarithmic, S-curve
• Mod 5 via: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 6 source: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 6 target: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• Mod 6 curve: Linear, Exponential, Logarithmic, S-curve
• Mod 6 via: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 7 source: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 7 target: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• Mod 7 curve: Linear, Exponential, Logarithmic, S-curve
• Mod 7 via: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 8 source: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 8 target: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• Mod 8 curve: Linear, Exponential, Logarithmic, S-curve
• Mod 8 via: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 9 source: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 9 target: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• Mod 9 curve: Linear, Exponential, Logarithmic, S-curve
• Mod 9 via: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 10 source: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 10 target: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• Mod 10 curve: Linear, Exponential, Logarithmic, S-curve
• Mod 10 via: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 11 source: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 11 target: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• Mod 11 curve: Linear, Exponential, Logarithmic, S-curve
• Mod 11 via: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 12 source: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 12 target: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• Mod 12 curve: Linear, Exponential, Logarithmic, S-curve
• Mod 12 via: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 13 source: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 13 target: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• Mod 13 curve: Linear, Exponential, Logarithmic, S-curve
• Mod 13 via: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 14 source: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 14 target: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• Mod 14 curve: Linear, Exponential, Logarithmic, S-curve
• Mod 14 via: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 15 source: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 15 target: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• Mod 15 curve: Linear, Exponential, Logarithmic, S-curve
• Mod 15 via: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 16 source: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure
• Mod 16 target: None, F1 cutoff, F1 resonance, A position, B position, Pitch, Volume, Drive, FM, Pan, B pitch, Sub, A pitch, A level, B level, A detune, B detune, A warp, B warp, F2 cutoff, F2 resonance, Noise, Filter drive, Drive mix, LFO 1 rate, LFO 2 rate, LFO 3 rate, LFO 4 rate, Chorus mix, Phaser mix, Delay mix, Reverb mix, Width, Pre drive, Crush, Band drive
• Mod 16 curve: Linear, Exponential, Logarithmic, S-curve
• Mod 16 via: None, LFO 1, LFO 2, LFO 3, LFO 4, Volume env, Filter env, Mod env, Velocity, Note, Mod wheel, Aftertouch, Pitch bend, Random, Macro 1, Macro 2, Macro 3, Macro 4, Note random, Note random ±, Chaos, Release velocity, Note pressure

Build fledge.wasm yourself

The synth is written in Rust, with no dependencies. In source/:

rustup target add wasm32-unknown-unknown
./build.sh                 # writes ../../public/fledgetone-plugins/fledge.wasm in Fledgetone's repository
cargo test --release       # the synth's tests

Outside Fledgetone's repository, run the build line from build.sh and take the file from target/wasm32-unknown-unknown/release/fledge_synth.wasm. The module has no imports and exports the plain C functions listed in source/src/abi.rs, which fledge-processor.js calls.

Licence

These files are free software under the GNU General Public License, version 3 or (at your choice) any later version: GPL-3.0-or-later. The full text is in LICENSE. In plain words:

• Free to use, change and share. You can use them for anything, for free, change them, and give them to others, changed or not.
• A program that includes them is GPL too. If you share a program that includes these files, or code made from them, you must release that whole program under the GPL as well, and give the people you share it with its source code (or a way to get it).
• Keep the notices. Keep this licence and the copyright notice with the files.
• No warranty. They come as they are, with no promise that they work for your purpose.
• Your music is yours. The licence covers this code, not what you make with it: the music, sounds and songs you make with these tools are yours, to use and share on any terms you like.

This is a summary to help you; the licence text in LICENSE is what counts. Questions or concerns: email martin@twobirdsworkshop.com.