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integrated with envelopes

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This commit is contained in:
Jade (Rose) Rowland 2024-05-17 17:38:44 -04:00
parent d49c9dce4f
commit 4160639d88
3 changed files with 24 additions and 12 deletions
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11
packages/superdough/worklets.mjs
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@ -115,8 +115,9 @@ const _PI = 3.14159265359;
class LadderProcessor extends AudioWorkletProcessor {
static get parameterDescriptors() {
return [
{ name: 'cutoff', defaultValue: 500 },
{ name: 'frequency', defaultValue: 500 },
{ name: 'q', defaultValue: 1 },
{ name: 'drive', defaultValue: 1 },
];
}
@ -143,11 +144,13 @@ class LadderProcessor extends AudioWorkletProcessor {
this.started = hasInput;
const resonance = parameters.q[0];
let cutoff = parameters.cutoff[0];
const drive = parameters.drive[0] * 2;
let cutoff = parameters.frequency[0];
cutoff = (cutoff * 2 * _PI) / sampleRate;
cutoff = cutoff > 1 ? 1 : cutoff;
const k = resonance * 4;
const makeupgain = 1 / drive;
for (let n = 0; n < blockSize; n++) {
for (let i = 0; i < input.length; i++) {
@ -157,12 +160,12 @@ class LadderProcessor extends AudioWorkletProcessor {
this.p33 = this.p32;
this.p32 = this.p3;
this.p0 += (fast_tanh(input[i][n] - k * out) - fast_tanh(this.p0)) * cutoff;
this.p0 += (fast_tanh(input[i][n] * drive - k * out) - fast_tanh(this.p0)) * cutoff;
this.p1 += (fast_tanh(this.p0) - fast_tanh(this.p1)) * cutoff;
this.p2 += (fast_tanh(this.p1) - fast_tanh(this.p2)) * cutoff;
this.p3 += (fast_tanh(this.p2) - fast_tanh(this.p3)) * cutoff;
output[i][n] = out;
output[i][n] = out * makeupgain;
}
}
return true;