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fixed output

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This commit is contained in:
Jade (Rose) Rowland 2024-03-03 22:05:00 -05:00
parent 823c208c71
commit e839c271cd
2 changed files with 28 additions and 26 deletions
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2
packages/superdough/synth.mjs
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@ -67,7 +67,7 @@ export function registerSynthSounds() {
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, 0.1, begin, holdend, 'linear');
return { return {
node, node,

52
packages/superdough/worklets.mjs
View File

@ -111,19 +111,20 @@ class DistortProcessor extends AudioWorkletProcessor {
registerProcessor('distort-processor', DistortProcessor); registerProcessor('distort-processor', DistortProcessor);
const polyBlep = (t, dt) => { // removes frequencies above nyquist to prevent aliasing
// 0 <= t < 1 const polyBlep = (phase, dt) => {
if (t < dt) { // 0 <= phase < 1
t /= dt; if (phase < dt) {
// 2 * (t - t^2/2 - 0.5) phase /= dt;
return t + t - t * t - 1; // 2 * (phase - phase^2/2 - 0.5)
return phase + phase - phase * phase - 1;
} }
// -1 < t < 0 // -1 < phase < 0
else if (t > 1 - dt) { else if (phase > 1 - dt) {
t = (t - 1) / dt; phase = (phase - 1) / dt;
// 2 * (t^2/2 + t + 0.5) // 2 * (phase^2/2 + phase + 0.5)
return t * t + t + t + 1; return phase * phase + phase + phase + 1;
} }
// 0 otherwise // 0 otherwise
@ -132,12 +133,12 @@ const polyBlep = (t, dt) => {
} }
}; };
const saw = (t, dt) => { const saw = (phase, 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 * phase)
t += 0.5; phase += 0.5;
if (t >= 1) t -= 1; if (phase >= 1) phase -= 1;
const osc = 2 * t - 1; const v = 2 * phase - 1;
return osc - polyBlep(t, dt); return v - polyBlep(phase, dt);
}; };
class SuperSawOscillatorProcessor extends AudioWorkletProcessor { class SuperSawOscillatorProcessor extends AudioWorkletProcessor {
@ -178,9 +179,10 @@ class SuperSawOscillatorProcessor extends AudioWorkletProcessor {
const frequency = params.frequency[0]; const frequency = params.frequency[0];
const output = outputs[0]; const output = outputs[0];
const numSaws = 7; const numSaws = 6;
const detune = 0.5; const detune = 0.1;
const spread = 0.6; let spread = 0.6;
spread = spread * 0.5 + 0.5;
for (let n = 0; n < numSaws; n++) { for (let n = 0; n < numSaws; n++) {
let adj = 0; let adj = 0;
@ -193,12 +195,12 @@ class SuperSawOscillatorProcessor extends AudioWorkletProcessor {
const dt = freq / sampleRate; const dt = freq / sampleRate;
for (let i = 0; i < output[0].length; i++) { for (let i = 0; i < output[0].length; i++) {
const osc = saw(this.phase[n], dt);
output[0][i] = output[0][i] + osc * (1 - balance);
output[1][i] = output[1][i] + osc * balance;
this.phase[n] = this.phase[n] ?? Math.random(); this.phase[n] = this.phase[n] ?? Math.random();
const v = saw(this.phase[n], dt);
output[0][i] = output[0][i] + v * (1 - balance);
output[1][i] = output[1][i] + v * balance;
this.phase[n] += dt; this.phase[n] += dt;
if (this.phase[n] > 1.0) { if (this.phase[n] > 1.0) {