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This commit is contained in:
Jade (Rose) Rowland 2024-05-18 00:51:56 -04:00
parent e6f272dd0c
commit a8eafbc309
4 changed files with 24 additions and 10 deletions
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13
packages/superdough/worklets.mjs
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@ -1,6 +1,6 @@
// coarse, crush, and shape processors adapted from dktr0's webdirt: https://github.com/dktr0/WebDirt/blob/5ce3d698362c54d6e1b68acc47eb2955ac62c793/dist/AudioWorklets.js
// LICENSE GNU General Public License v3.0 see https://github.com/dktr0/WebDirt/blob/main/LICENSE
import { clamp } from './util.mjs';
const blockSize = 128;
class CoarseProcessor extends AudioWorkletProcessor {
static get parameterDescriptors() {
@ -111,13 +111,13 @@ function fast_tanh(x) {
return (x * (27.0 + x2)) / (27.0 + 9.0 * x2);
}
const _PI = 3.14159265359;
//adapted from https://github.com/TheBouteillacBear/webaudioworklet-wasm?tab=MIT-1-ov-file
class LadderProcessor extends AudioWorkletProcessor {
static get parameterDescriptors() {
return [
{ name: 'frequency', defaultValue: 500 },
{ name: 'q', defaultValue: 1 },
{ name: 'drive', defaultValue: 1 },
{ name: 'drive', defaultValue: 0.69 },
];
}
@ -145,13 +145,14 @@ class LadderProcessor extends AudioWorkletProcessor {
this.started = hasInput;
const resonance = parameters.q[0];
const drive = parameters.drive[0] * 2;
const drive = clamp(Math.exp(parameters.drive[0]), 0.1, 2000);
let cutoff = parameters.frequency[0];
cutoff = (cutoff * 2 * _PI) / sampleRate;
cutoff = cutoff > 1 ? 1 : cutoff;
const k = resonance * 4;
const makeupgain = 1 / drive;
const k = Math.min(8, resonance * 2);
// drive makeup * resonance volume loss makeup
const makeupgain = (1 / drive) * Math.min(1.75, 1 + k);
for (let n = 0; n < blockSize; n++) {
for (let i = 0; i < input.length; i++) {