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Jade (Rose) Rowland 2024-03-03 00:37:33 -05:00
parent 8a7d72bf24
commit 7383dca9ee
2 changed files with 38 additions and 91 deletions
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72
packages/superdough/synth.mjs
View File

@ -26,47 +26,51 @@ const noises = ['pink', 'white', 'brown', 'crackle'];
export function registerSynthSounds() { export function registerSynthSounds() {
[...waveforms].forEach((s, i) => { [...waveforms].forEach((s, i) => {
registerSound(s, (begin, value, onended) => { registerSound(
const ac = getAudioContext(); s,
let { note, freq, duration } = value; (begin, value, onended) => {
note = note || 36; const ac = getAudioContext();
if (typeof note === 'string') { let { note, freq, duration } = value;
note = noteToMidi(note); // e.g. c3 => 48 note = note || 36;
} if (typeof note === 'string') {
// get frequency note = noteToMidi(note); // e.g. c3 => 48
if (!freq && typeof note === 'number') { }
freq = midiToFreq(note); // + 48); // get frequency
} if (!freq && typeof note === 'number') {
freq = midiToFreq(note); // + 48);
}
// set frequency // set frequency
freq = Number(freq); freq = Number(freq);
const [attack, decay, sustain, release] = getADSRValues( const [attack, decay, sustain, release] = getADSRValues(
[value.attack, value.decay, value.sustain, value.release], [value.attack, value.decay, value.sustain, value.release],
'linear', 'linear',
[0.001, 0.05, 0.6, 0.01], [0.001, 0.05, 0.6, 0.01],
); );
const holdend = begin + duration; const holdend = begin + duration;
const end = holdend + release + 0.01; const end = holdend + release + 0.01;
let node = getWorklet(ac, 'better-oscillator', { frequency: freq, wave: i, begin, end }); let node = getWorklet(ac, 'better-oscillator', { frequency: freq, wave: i, begin, end });
const envGain = gainNode(1); const envGain = gainNode(1);
node = node.connect(envGain); node = node.connect(envGain);
getParamADSR(node.gain, attack, decay, sustain, release, 0, 0.3, begin, holdend, 'linear'); getParamADSR(node.gain, attack, decay, sustain, release, 0, 0.3, begin, holdend, 'linear');
return { return {
node, node,
stop: (time) => { stop: (time) => {
// o.stop(time); // o.stop(time);
}, },
triggerRelease: (time) => { triggerRelease: (time) => {
// envGain?.stop(time); // envGain?.stop(time);
}, },
}; };
}); },
{ type: 'synth', prebake: true },
);
}); });
[...noises].forEach((s) => { [...noises].forEach((s) => {

57
packages/superdough/worklets.mjs
View File

@ -111,29 +111,6 @@ class DistortProcessor extends AudioWorkletProcessor {
registerProcessor('distort-processor', DistortProcessor); registerProcessor('distort-processor', DistortProcessor);
// class SupersawProcessor extends AudioWorkletProcessor {
// static get parameterDescriptors() {
// return [
// { name: 'distort', defaultValue: 0 },
// { name: 'postgain', defaultValue: 1 },
// ];
// }
// constructor() {
// super();
// }
// process(inputs, outputs, parameters) {
// const output = outputs[0];
// let saw = (x, t) => ((x * t % 1) - 0.5) * 2
// }
// }
// registerProcessor('supersaw-processor', SupersawProcessor);
const saw = (v) => v - Math.floor(v);
const twoPI = Math.PI * 2;
const polyBlep = (t, dt) => { const polyBlep = (t, dt) => {
// 0 <= t < 1 // 0 <= t < 1
if (t < dt) { if (t < dt) {
@ -155,25 +132,6 @@ const polyBlep = (t, dt) => {
} }
}; };
const inc = () => {
t += freqInSecondsPerSample;
t -= bitwiseOrZero(t);
};
const square_number = (x) => {
return x * x;
};
const blep = (t, dt) => {
if (t < dt) {
return -square_number(t / dt - 1);
} else if (t > 1 - dt) {
return square_number((t - 1) / dt + 1);
} else {
return 0;
}
};
const polySaw = (t, dt) => { const polySaw = (t, dt) => {
// Correct phase, so it would be in line with sin(2.*M_PI * t) // Correct phase, so it would be in line with sin(2.*M_PI * t)
t += 0.5; t += 0.5;
@ -184,8 +142,6 @@ const polySaw = (t, dt) => {
// return naive_saw; // return naive_saw;
}; };
const saw2 = (x, t) => (((x * t) % 1) - 0.5) * 2;
class BetterOscillatorProcessor extends AudioWorkletProcessor { class BetterOscillatorProcessor extends AudioWorkletProcessor {
constructor() { constructor() {
super(); super();
@ -252,9 +208,6 @@ class BetterOscillatorProcessor extends AudioWorkletProcessor {
const output = outputs[0]; const output = outputs[0];
for (let i = 0; i < output[0].length; i++) { for (let i = 0; i < output[0].length; i++) {
// const blep = polyBlep(this.phase, frequency / sampleRate);
// console.log(blep);
// const out = saw2(frequency, this.phase / sampleRate);
const out = polySaw(this.phase, frequency / sampleRate); const out = polySaw(this.phase, frequency / sampleRate);
output[0][i] = out; output[0][i] = out;
@ -264,16 +217,6 @@ class BetterOscillatorProcessor extends AudioWorkletProcessor {
this.phase = this.phase - 1; this.phase = this.phase - 1;
} }
} }
// for (let i = 0; i < outlen; x++) {
// const val = saw2(frequency, this.phase)
// // out[x] = 2 * saw(dt + this.phase) - 1;
// // out[x] = polySaw(this.phase, dt);
// }
// this.phase = this.phase + dt * outlen;
// this.phase %= sampleRate;
return true; return true;
// for (let z = 0; z < outputs.length; z++) { // for (let z = 0; z < outputs.length; z++) {