Merge branch 'main' into glossing/fmsss
This commit is contained in:
Aria
commit
573cd1ae41
91 changed files with 8497 additions and 6956 deletions
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@ -89,7 +89,7 @@ superdough({ s: 'bd', delay: 0.5 }, 0, 1);
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- `decay`: seconds of decay phase
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- `sustain`: gain of sustain phase
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- `release`: seconds of release phase
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- `deadline`: seconds until the sound should play (0 = immediate)
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- `deadline`: seconds from audio context initialization before playing the sound (getAudioContextCurrentTime() = immediate)
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- `duration`: seconds the sound should last. optional for one shot samples, required for synth sounds
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### registerSynthSounds()
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@ -154,6 +154,24 @@ export const getADSRValues = (params, curve = 'linear', defaultValues) => {
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return [Math.max(a ?? 0, envmin), Math.max(d ?? 0, envmin), Math.min(sustain, envmax), Math.max(r ?? 0, releaseMin)];
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};
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export function getParamLfo(audioContext, param, start, end, lfoValues) {
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let { defaultDepth = 1, depth, dcoffset, ...getLfoInputs } = lfoValues;
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if (depth == null) {
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const hasLFOParams = Object.values(getLfoInputs).some((v) => v != null);
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depth = hasLFOParams ? defaultDepth : 0;
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}
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let lfo;
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if (depth) {
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lfo = getLfo(audioContext, start, end, {
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depth,
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dcoffset,
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...getLfoInputs,
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});
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lfo.connect(param);
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}
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return lfo;
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}
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// helper utility for applying standard modulators to a parameter
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export function applyParameterModulators(audioContext, param, start, end, envelopeValues, lfoValues) {
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let { amount, offset, defaultAmount = 1, curve = 'linear', values, holdEnd, defaultValues } = envelopeValues;
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@ -170,55 +188,58 @@ export function applyParameterModulators(audioContext, param, start, end, envelo
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const [attack, decay, sustain, release] = getADSRValues(values, curve, defaultValues);
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getParamADSR(param, attack, decay, sustain, release, min, max, start, holdEnd, curve);
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}
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let lfo;
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let { defaultDepth = 1, depth, dcoffset, ...getLfoInputs } = lfoValues;
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if (depth == null) {
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const hasLFOParams = Object.values(getLfoInputs).some((v) => v != null);
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depth = hasLFOParams ? defaultDepth : 0;
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}
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if (depth) {
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lfo = getLfo(audioContext, start, end, {
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depth,
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dcoffset,
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...getLfoInputs,
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});
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lfo.connect(param);
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}
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const lfo = getParamLfo(audioContext, param, start, end, lfoValues);
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return { lfo, disconnect: () => lfo?.disconnect() };
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}
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export function createFilter(context, type, frequency, Q, att, dec, sus, rel, fenv, start, end, fanchor, model, drive) {
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const curve = 'exponential';
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const [attack, decay, sustain, release] = getADSRValues([att, dec, sus, rel], curve, [0.005, 0.14, 0, 0.1]);
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let filter;
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let frequencyParam;
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export function createFilter(context, start, end, params, cps) {
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let {
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frequency,
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anchor,
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env,
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type,
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model,
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q = 1,
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drive = 0.69,
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depth,
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dcoffset = -0.5,
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skew,
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shape,
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rate,
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sync,
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} = params;
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let frequencyParam, filter;
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if (model === 'ladder') {
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filter = getWorklet(context, 'ladder-processor', { frequency, q: Q, drive });
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filter = getWorklet(context, 'ladder-processor', { frequency, q, drive });
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frequencyParam = filter.parameters.get('frequency');
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} else {
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filter = context.createBiquadFilter();
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filter.type = type;
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filter.Q.value = Q;
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filter.Q.value = q;
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filter.frequency.value = frequency;
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frequencyParam = filter.frequency;
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}
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const envelopeValues = [params.attack, params.decay, params.sustain, params.release];
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const [attack, decay, sustain, release] = getADSRValues(envelopeValues, 'exponential', [0.005, 0.14, 0, 0.1]);
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// envelope is active when any of these values is set
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const hasEnvelope = att ?? dec ?? sus ?? rel ?? fenv;
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const hasEnvelope = [...envelopeValues, env].some((v) => v !== undefined);
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// Apply ADSR to filter frequency
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if (hasEnvelope !== undefined) {
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fenv = nanFallback(fenv, 1, true);
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fanchor = nanFallback(fanchor, 0, true);
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const fenvAbs = Math.abs(fenv);
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const offset = fenvAbs * fanchor;
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if (hasEnvelope) {
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env = nanFallback(env, 1, true);
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anchor = nanFallback(anchor, 0, true);
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const envAbs = Math.abs(env);
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const offset = envAbs * anchor;
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let min = clamp(2 ** -offset * frequency, 0, 20000);
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let max = clamp(2 ** (fenvAbs - offset) * frequency, 0, 20000);
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if (fenv < 0) [min, max] = [max, min];
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getParamADSR(frequencyParam, attack, decay, sustain, release, min, max, start, end, curve);
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return filter;
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let max = clamp(2 ** (envAbs - offset) * frequency, 0, 20000);
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if (env < 0) [min, max] = [max, min];
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getParamADSR(frequencyParam, attack, decay, sustain, release, min, max, start, end, 'exponential');
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}
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if (sync != null) {
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rate = cps * sync;
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}
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const lfoValues = { depth, dcoffset, skew, shape, frequency: rate };
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getParamLfo(context, frequencyParam, start, end, lfoValues);
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return filter;
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}
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@ -280,6 +301,11 @@ export function getVibratoOscillator(param, value, t) {
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return vibratoOscillator;
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}
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}
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export function scheduleAtTime(callback, targetTime, audioContext = getAudioContext()) {
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const currentTime = audioContext.currentTime;
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webAudioTimeout(audioContext, callback, currentTime, targetTime);
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}
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// ConstantSource inherits AudioScheduledSourceNode, which has scheduling abilities
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// a bit of a hack, but it works very well :)
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export function webAudioTimeout(audioContext, onComplete, startTime, stopTime) {
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@ -1,6 +1,6 @@
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{
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"name": "superdough",
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"version": "1.2.5",
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"version": "1.2.6",
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"description": "simple web audio synth and sampler intended for live coding. inspired by superdirt and webdirt.",
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"main": "index.mjs",
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"type": "module",
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@ -37,5 +37,8 @@
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},
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"dependencies": {
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"nanostores": "^0.11.3"
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},
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"engines": {
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"node": ">=18.0.0"
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}
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}
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@ -104,6 +104,8 @@ var applyGradualLowpass = function (input, lpFreqStart, lpFreqEnd, lpFreqEndAt,
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player.start();
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context.oncomplete = function (event) {
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callback(event.renderedBuffer);
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filter.disconnect();
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player.disconnect();
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};
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context.startRendering();
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@ -129,9 +129,7 @@ function githubPath(base, subpath = '') {
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let repo = components.length >= 2 ? components[1] : 'samples';
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let branch = components.length >= 3 ? components[2] : 'main';
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let other = components.slice(3);
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if (subpath) {
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other.push(subpath);
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}
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other.push(subpath ? subpath : '');
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other = other.join('/');
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return `https://raw.githubusercontent.com/${user}/${repo}/${branch}/${other}`;
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@ -7,7 +7,7 @@ This program is free software: you can redistribute it and/or modify it under th
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import './feedbackdelay.mjs';
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import './reverb.mjs';
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import './vowel.mjs';
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import { nanFallback, _mod, cycleToSeconds } from './util.mjs';
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import { nanFallback, _mod, cycleToSeconds, pickAndRename } from './util.mjs';
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import workletsUrl from './worklets.mjs?audioworklet';
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import { createFilter, gainNode, getCompressor, getDistortion, getLfo, getWorklet, effectSend } from './helpers.mjs';
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import { map } from 'nanostores';
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@ -146,11 +146,6 @@ let defaultDefaultValues = {
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gain: 0.8,
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postgain: 1,
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density: '.03',
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ftype: '12db',
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fanchor: 0,
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resonance: 1,
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hresonance: 1,
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bandq: 1,
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channels: [1, 2],
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phaserdepth: 0.75,
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shapevol: 1,
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@ -415,32 +410,7 @@ export const superdough = async (value, t, hapDuration, cps = 0.5, cycle = 0.5)
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djf,
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// filters
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fanchor = getDefaultValue('fanchor'),
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drive = 0.69,
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release = 0,
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// low pass
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cutoff,
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lpenv,
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lpattack,
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lpdecay,
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lpsustain,
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lprelease,
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resonance = getDefaultValue('resonance'),
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// high pass
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hpenv,
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hcutoff,
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hpattack,
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hpdecay,
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hpsustain,
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hprelease,
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hresonance = getDefaultValue('hresonance'),
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// band pass
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bpenv,
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bandf,
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bpattack,
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bpdecay,
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bpsustain,
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bprelease,
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bandq = getDefaultValue('bandq'),
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//phaser
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phaserrate: phaser,
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@ -511,7 +481,7 @@ export const superdough = async (value, t, hapDuration, cps = 0.5, cycle = 0.5)
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// oldest audio nodes will be destroyed if maximum polyphony is exceeded
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for (let i = 0; i <= activeSoundSources.size - maxPolyphony; i++) {
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const ch = activeSoundSources.entries().next();
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const source = ch.value[1];
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const source = ch.value[1].deref();
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const chainID = ch.value[0];
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const endTime = t + 0.25;
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source?.node?.gain?.linearRampToValueAtTime(0, endTime);
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@ -543,7 +513,7 @@ export const superdough = async (value, t, hapDuration, cps = 0.5, cycle = 0.5)
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if (soundHandle) {
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sourceNode = soundHandle.node;
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activeSoundSources.set(chainID, soundHandle);
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activeSoundSources.set(chainID, new WeakRef(soundHandle)); // allow GC
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}
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} else {
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throw new Error(`sound ${s} not found! Is it loaded?`);
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@ -565,57 +535,87 @@ export const superdough = async (value, t, hapDuration, cps = 0.5, cycle = 0.5)
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// gain stage
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chain.push(gainNode(gain));
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//filter
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// filter
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const ftype = getFilterType(value.ftype);
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if (cutoff !== undefined) {
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let lp = () =>
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createFilter(
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ac,
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'lowpass',
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cutoff,
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resonance,
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lpattack,
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lpdecay,
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lpsustain,
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lprelease,
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lpenv,
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t,
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end,
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fanchor,
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ftype,
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drive,
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);
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if (value.cutoff !== undefined) {
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const lpMap = {
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frequency: 'cutoff',
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q: 'resonance',
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attack: 'lpattack',
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decay: 'lpdecay',
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sustain: 'lpsustain',
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release: 'lprelease',
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env: 'lpenv',
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anchor: 'fanchor',
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model: 'ftype',
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drive: 'drive',
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rate: 'lprate',
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sync: 'lpsync',
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depth: 'lpdepth',
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shape: 'lpshape',
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dcoffset: 'lpdc',
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skew: 'lpskew',
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};
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const lpParams = pickAndRename(value, lpMap);
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lpParams.type = 'lowpass';
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let lp = () => createFilter(ac, t, end, lpParams, cps);
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chain.push(lp());
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if (ftype === '24db') {
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chain.push(lp());
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}
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}
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if (hcutoff !== undefined) {
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let hp = () =>
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createFilter(
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ac,
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'highpass',
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hcutoff,
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hresonance,
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hpattack,
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hpdecay,
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hpsustain,
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hprelease,
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hpenv,
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t,
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end,
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fanchor,
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);
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if (value.hcutoff !== undefined) {
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const hpMap = {
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frequency: 'hcutoff',
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q: 'hresonance',
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attack: 'hpattack',
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decay: 'hpdecay',
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sustain: 'hpsustain',
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release: 'hprelease',
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env: 'hpenv',
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anchor: 'fanchor',
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model: 'ftype',
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drive: 'drive',
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rate: 'hprate',
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sync: 'hpsync',
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depth: 'hpdepth',
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shape: 'hpshape',
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dcoffset: 'hpdc',
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skew: 'hpskew',
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};
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const hpParams = pickAndRename(value, hpMap);
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hpParams.type = 'highpass';
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let hp = () => createFilter(ac, t, end, hpParams, cps);
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chain.push(hp());
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if (ftype === '24db') {
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chain.push(hp());
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}
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}
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if (bandf !== undefined) {
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let bp = () =>
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createFilter(ac, 'bandpass', bandf, bandq, bpattack, bpdecay, bpsustain, bprelease, bpenv, t, end, fanchor);
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if (value.bandf !== undefined) {
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const bpMap = {
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frequency: 'bandf',
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q: 'bandq',
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attack: 'bpattack',
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decay: 'bpdecay',
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sustain: 'bpsustain',
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release: 'bprelease',
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env: 'bpenv',
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anchor: 'fanchor',
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model: 'ftype',
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drive: 'drive',
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rate: 'bprate',
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sync: 'bpsync',
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depth: 'bpdepth',
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shape: 'bpshape',
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dcoffset: 'bpdc',
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skew: 'bpskew',
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};
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const bpParams = pickAndRename(value, bpMap);
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bpParams.type = 'bandpass';
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let bp = () => createFilter(ac, t, end, bpParams, cps);
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chain.push(bp());
|
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if (ftype === '24db') {
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chain.push(bp());
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|
|
@ -630,6 +630,7 @@ export const superdough = async (value, t, hapDuration, cps = 0.5, cycle = 0.5)
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// effects
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coarse !== undefined && chain.push(getWorklet(ac, 'coarse-processor', { coarse }));
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crush !== undefined && chain.push(getWorklet(ac, 'crush-processor', { crush }));
|
||||
shape !== undefined && chain.push(getWorklet(ac, 'shape-processor', { shape, postgain: shapevol }));
|
||||
distort !== undefined && chain.push(getDistortion(distort, distortvol, distorttype));
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||||
|
||||
if (tremolosync != null) {
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||||
|
|
@ -707,7 +708,8 @@ export const superdough = async (value, t, hapDuration, cps = 0.5, cycle = 0.5)
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roomIR = await loadBuffer(url, ac, ir, 0);
|
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}
|
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orbitBus.getReverb(roomsize, roomfade, roomlp, roomdim, roomIR, irspeed, irbegin);
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orbitBus.sendReverb(post, room);
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const send = orbitBus.sendReverb(post, room);
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audioNodes.push(send);
|
||||
}
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||||
|
||||
if (djf != null) {
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||||
|
|
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|||
|
|
@ -78,7 +78,7 @@ export class Orbit {
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|||
return this.reverbNode;
|
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}
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||||
sendReverb(node, amount) {
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effectSend(node, this.reverbNode, amount);
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return effectSend(node, this.reverbNode, amount);
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||||
}
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||||
|
||||
sendDelay(node, amount) {
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||||
|
|
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|||
|
|
@ -16,13 +16,17 @@ export const tokenizeNote = (note) => {
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const chromas = { c: 0, d: 2, e: 4, f: 5, g: 7, a: 9, b: 11 };
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||||
const accs = { '#': 1, b: -1, s: 1, f: -1 };
|
||||
|
||||
export const getAccidentalsOffset = (accidentals) => {
|
||||
return accidentals?.split('').reduce((o, char) => o + accs[char], 0) || 0;
|
||||
};
|
||||
|
||||
export const noteToMidi = (note, defaultOctave = 3) => {
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||||
const [pc, acc, oct = defaultOctave] = tokenizeNote(note);
|
||||
if (!pc) {
|
||||
throw new Error('not a note: "' + note + '"');
|
||||
}
|
||||
const chroma = chromas[pc.toLowerCase()];
|
||||
const offset = acc?.split('').reduce((o, char) => o + accs[char], 0) || 0;
|
||||
const offset = getAccidentalsOffset(acc);
|
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return (Number(oct) + 1) * 12 + chroma + offset;
|
||||
};
|
||||
export const midiToFreq = (n) => {
|
||||
|
|
@ -105,3 +109,8 @@ export function getCommonSampleInfo(hapValue, bank) {
|
|||
const label = `${s}:${index}`;
|
||||
return { transpose, url, index, midi, label };
|
||||
}
|
||||
|
||||
/** Selects entries from `source` and renames them via `map` */
|
||||
export const pickAndRename = (source, map) => {
|
||||
return Object.fromEntries(Object.entries(map).map(([newKey, oldKey]) => [newKey, source[oldKey]]));
|
||||
};
|
||||
|
|
|
|||
|
|
@ -6,51 +6,57 @@ import OLAProcessor from './ola-processor';
|
|||
import FFT from './fft.js';
|
||||
import { getDistortionAlgorithm } from './helpers.mjs';
|
||||
|
||||
const blockSize = 128;
|
||||
const PI = Math.PI;
|
||||
const TWO_PI = 2 * PI;
|
||||
const INVSR = 1 / sampleRate;
|
||||
|
||||
const clamp = (num, min, max) => Math.min(Math.max(num, min), max);
|
||||
const mod = (n, m) => ((n % m) + m) % m;
|
||||
const lerp = (a, b, n) => n * (b - a) + a;
|
||||
const pv = (arr, n) => arr[n] ?? arr[0];
|
||||
const frac = (x) => x - Math.floor(x);
|
||||
const ffloor = (x) => x | 0; // fast floor for non-negative
|
||||
|
||||
const getUnisonDetune = (unison, detune, voiceIndex) => {
|
||||
if (unison < 2) {
|
||||
return 0;
|
||||
}
|
||||
return lerp(-detune * 0.5, detune * 0.5, voiceIndex / (unison - 1));
|
||||
// Fast integer ops for non-negative values
|
||||
const ffloor = (x) => x | 0;
|
||||
const fround = (x) => ffloor(x + 0.5);
|
||||
const fceil = (x) => ffloor(x + 1);
|
||||
const ffrac = (x) => x - ffloor(x);
|
||||
|
||||
const fast_tanh = (x) => {
|
||||
const x2 = x ** 2;
|
||||
return (x * (27.0 + x2)) / (27.0 + 9.0 * x2);
|
||||
};
|
||||
|
||||
// Optimized per-voice detuner which precomputes constants
|
||||
const getDetuner = (unison, detune) => {
|
||||
if (unison < 2) {
|
||||
return (_voiceIdx) => 0;
|
||||
}
|
||||
const scale = detune / (unison - 1);
|
||||
const center = detune * 0.5;
|
||||
return (voiceIdx) => voiceIdx * scale - center;
|
||||
};
|
||||
|
||||
const applySemitoneDetuneToFrequency = (frequency, detune) => {
|
||||
return frequency * Math.pow(2, detune / 12);
|
||||
};
|
||||
|
||||
// Restrict phase to the range [0, maxPhase) via wrapping
|
||||
function wrapPhase(phase, maxPhase = 1) {
|
||||
if (phase >= maxPhase) {
|
||||
phase -= maxPhase;
|
||||
} else if (phase < 0) {
|
||||
phase += maxPhase;
|
||||
}
|
||||
return phase;
|
||||
}
|
||||
const blockSize = 128;
|
||||
// Smooth waveshape near discontinuities to remove frequencies above Nyquist and prevent aliasing
|
||||
// referenced from https://www.kvraudio.com/forum/viewtopic.php?t=375517
|
||||
function polyBlep(phase, dt) {
|
||||
dt = Math.min(dt, 1 - dt);
|
||||
const invdt = 1 / dt;
|
||||
// Start of cycle
|
||||
if (phase < dt) {
|
||||
phase /= dt;
|
||||
// 2 * (phase - phase^2/2 - 0.5)
|
||||
return phase + phase - phase * phase - 1;
|
||||
phase *= invdt;
|
||||
return 2 * phase - phase ** 2 - 1;
|
||||
}
|
||||
|
||||
// End of cycle
|
||||
else if (phase > 1 - dt) {
|
||||
phase = (phase - 1) / dt;
|
||||
// 2 * (phase^2/2 + phase + 0.5)
|
||||
return phase * phase + phase + phase + 1;
|
||||
phase = (phase - 1) * invdt;
|
||||
return phase ** 2 + 2 * phase + 1;
|
||||
}
|
||||
|
||||
// 0 otherwise
|
||||
else {
|
||||
return 0;
|
||||
|
|
@ -66,7 +72,7 @@ const waveshapes = {
|
|||
return phase / skew;
|
||||
},
|
||||
sine(phase) {
|
||||
return Math.sin(Math.PI * 2 * phase) * 0.5 + 0.5;
|
||||
return Math.sin(TWO_PI * phase) * 0.5 + 0.5;
|
||||
},
|
||||
ramp(phase) {
|
||||
return phase;
|
||||
|
|
@ -100,12 +106,6 @@ const waveshapes = {
|
|||
return v - polyBlep(phase, dt);
|
||||
},
|
||||
};
|
||||
function getParamValue(block, param) {
|
||||
if (param.length > 1) {
|
||||
return param[block];
|
||||
}
|
||||
return param[0];
|
||||
}
|
||||
|
||||
const waveShapeNames = Object.keys(waveshapes);
|
||||
class LFOProcessor extends AudioWorkletProcessor {
|
||||
|
|
@ -165,9 +165,9 @@ class LFOProcessor extends AudioWorkletProcessor {
|
|||
const blockSize = output[0].length ?? 0;
|
||||
|
||||
if (this.phase == null) {
|
||||
this.phase = mod(time * frequency + phaseoffset, 1);
|
||||
this.phase = ffrac(time * frequency + phaseoffset);
|
||||
}
|
||||
const dt = frequency / sampleRate;
|
||||
const dt = frequency * INVSR;
|
||||
for (let n = 0; n < blockSize; n++) {
|
||||
for (let i = 0; i < output.length; i++) {
|
||||
let modval = (waveshapes[shape](this.phase, skew) + dcoffset) * depth;
|
||||
|
|
@ -293,8 +293,8 @@ class TwoPoleFilter {
|
|||
// Out of bound values can produce NaNs
|
||||
resonance = clamp(resonance, 0, 1);
|
||||
cutoff = clamp(cutoff, 0, sampleRate / 2 - 1);
|
||||
const c = clamp(2 * Math.sin(cutoff * (_PI / sampleRate)), 0, 1.14);
|
||||
const r = Math.pow(0.5, (resonance + 0.125) / 0.125);
|
||||
const c = clamp(2 * Math.sin(cutoff * PI * INVSR), 0, 1.14);
|
||||
const r = Math.pow(0.5, 8 * resonance + 1);
|
||||
const mrc = 1 - r * c;
|
||||
this.s0 = mrc * this.s0 - c * this.s1 + c * s; // bpf
|
||||
this.s1 = mrc * this.s1 + c * this.s0; // lpf
|
||||
|
|
@ -353,11 +353,6 @@ class DJFProcessor extends AudioWorkletProcessor {
|
|||
}
|
||||
registerProcessor('djf-processor', DJFProcessor);
|
||||
|
||||
function fast_tanh(x) {
|
||||
const x2 = x * 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() {
|
||||
|
|
@ -395,7 +390,7 @@ class LadderProcessor extends AudioWorkletProcessor {
|
|||
const drive = clamp(Math.exp(parameters.drive[0]), 0.1, 2000);
|
||||
|
||||
let cutoff = parameters.frequency[0];
|
||||
cutoff = (cutoff * 2 * _PI) / sampleRate;
|
||||
cutoff = cutoff * TWO_PI * INVSR;
|
||||
cutoff = cutoff > 1 ? 1 : cutoff;
|
||||
|
||||
const k = Math.min(8, resonance * 0.13);
|
||||
|
|
@ -508,6 +503,7 @@ class SuperSawOscillatorProcessor extends AudioWorkletProcessor {
|
|||
name: 'voices',
|
||||
defaultValue: 5,
|
||||
min: 1,
|
||||
automationRate: 'k-rate',
|
||||
},
|
||||
];
|
||||
}
|
||||
|
|
@ -519,40 +515,36 @@ class SuperSawOscillatorProcessor extends AudioWorkletProcessor {
|
|||
// this.port.postMessage({ type: 'onended' });
|
||||
return false;
|
||||
}
|
||||
|
||||
const output = outputs[0];
|
||||
|
||||
const voices = params.voices[0]; // k-rate
|
||||
for (let i = 0; i < output[0].length; i++) {
|
||||
const detune = pv(params.detune, i);
|
||||
const voices = pv(params.voices, i);
|
||||
const freqspread = pv(params.freqspread, i);
|
||||
const panspread = pv(params.panspread, i) * 0.5 + 0.5;
|
||||
const gain1 = Math.sqrt(1 - panspread);
|
||||
const gain2 = Math.sqrt(panspread);
|
||||
let gainL = Math.sqrt(1 - panspread);
|
||||
let gainR = Math.sqrt(panspread);
|
||||
let freq = pv(params.frequency, i);
|
||||
// Main detuning
|
||||
freq = applySemitoneDetuneToFrequency(freq, detune / 100);
|
||||
const detuner = getDetuner(voices, freqspread);
|
||||
for (let n = 0; n < voices; n++) {
|
||||
const isOdd = (n & 1) == 1;
|
||||
let gainL = gain1;
|
||||
let gainR = gain2;
|
||||
// invert right and left gain
|
||||
if (isOdd) {
|
||||
gainL = gain2;
|
||||
gainR = gain1;
|
||||
}
|
||||
// Individual voice detuning
|
||||
const freqVoice = applySemitoneDetuneToFrequency(freq, getUnisonDetune(voices, freqspread, n));
|
||||
const freqVoice = applySemitoneDetuneToFrequency(freq, detuner(n));
|
||||
// We must wrap this here because it is passed into sawblep below which
|
||||
// has domain [0, 1]
|
||||
const dt = mod(freqVoice / sampleRate, 1);
|
||||
const dt = ffrac(freqVoice * INVSR);
|
||||
this.phase[n] = this.phase[n] ?? Math.random();
|
||||
const v = waveshapes.sawblep(this.phase[n], dt);
|
||||
|
||||
output[0][i] = output[0][i] + v * gainL;
|
||||
output[1][i] = output[1][i] + v * gainR;
|
||||
output[0][i] += v * gainL;
|
||||
output[1][i] += v * gainR;
|
||||
|
||||
this.phase[n] = wrapPhase(this.phase[n] + dt);
|
||||
let pn = this.phase[n] + dt;
|
||||
if (pn >= 1.0) pn -= 1.0;
|
||||
this.phase[n] = pn;
|
||||
// invert right and left gain
|
||||
gainL = gainR;
|
||||
gainR = gainL;
|
||||
}
|
||||
}
|
||||
return true;
|
||||
|
|
@ -564,12 +556,16 @@ registerProcessor('supersaw-oscillator', SuperSawOscillatorProcessor);
|
|||
// Phase Vocoder sourced from https://github.com/olvb/phaze/tree/master?tab=readme-ov-file
|
||||
const BUFFERED_BLOCK_SIZE = 2048;
|
||||
|
||||
const hannCache = new Map();
|
||||
function genHannWindow(length) {
|
||||
let win = new Float32Array(length);
|
||||
for (var i = 0; i < length; i++) {
|
||||
win[i] = 0.5 * (1 - Math.cos((2 * Math.PI * i) / length));
|
||||
if (!hannCache.has(length)) {
|
||||
const win = new Float32Array(length);
|
||||
for (let i = 0; i < length; i++) {
|
||||
win[i] = 0.5 * (1 - Math.cos((TWO_PI * i) / length));
|
||||
}
|
||||
hannCache.set(length, win);
|
||||
}
|
||||
return win;
|
||||
return hannCache.get(length);
|
||||
}
|
||||
|
||||
class PhaseVocoderProcessor extends OLAProcessor {
|
||||
|
|
@ -587,11 +583,10 @@ class PhaseVocoderProcessor extends OLAProcessor {
|
|||
blockSize: BUFFERED_BLOCK_SIZE,
|
||||
};
|
||||
super(options);
|
||||
|
||||
this.fftSize = this.blockSize;
|
||||
this.timeCursor = 0;
|
||||
|
||||
this.hannWindow = genHannWindow(this.blockSize);
|
||||
this.fftSize = this.blockSize;
|
||||
this.invfftSize = 1 / this.fftSize;
|
||||
this.hannWindow = genHannWindow(this.fftSize);
|
||||
// prepare FFT and pre-allocate buffers
|
||||
this.fft = new FFT(this.fftSize);
|
||||
this.freqComplexBuffer = this.fft.createComplexArray();
|
||||
|
|
@ -604,52 +599,43 @@ class PhaseVocoderProcessor extends OLAProcessor {
|
|||
|
||||
processOLA(inputs, outputs, parameters) {
|
||||
// no automation, take last value
|
||||
|
||||
let pitchFactor = parameters.pitchFactor[parameters.pitchFactor.length - 1];
|
||||
|
||||
if (pitchFactor < 0) {
|
||||
pitchFactor = pitchFactor * 0.25;
|
||||
}
|
||||
pitchFactor = Math.max(0, pitchFactor + 1);
|
||||
|
||||
for (var i = 0; i < this.nbInputs; i++) {
|
||||
for (var j = 0; j < inputs[i].length; j++) {
|
||||
// big assumption here: output is symetric to input
|
||||
var input = inputs[i][j];
|
||||
var output = outputs[i][j];
|
||||
|
||||
for (let i = 0; i < this.nbInputs; i++) {
|
||||
for (let j = 0; j < inputs[i].length; j++) {
|
||||
const input = inputs[i][j];
|
||||
const output = outputs[i][j];
|
||||
this.applyHannWindow(input);
|
||||
|
||||
this.fft.realTransform(this.freqComplexBuffer, input);
|
||||
|
||||
this.computeMagnitudes();
|
||||
this.findPeaks();
|
||||
this.shiftPeaks(pitchFactor);
|
||||
|
||||
this.fft.completeSpectrum(this.freqComplexBufferShifted);
|
||||
this.fft.inverseTransform(this.timeComplexBuffer, this.freqComplexBufferShifted);
|
||||
this.fft.fromComplexArray(this.timeComplexBuffer, output);
|
||||
this.applyHannWindow(output);
|
||||
}
|
||||
}
|
||||
|
||||
this.timeCursor += this.hopSize;
|
||||
}
|
||||
|
||||
/** Apply Hann window in-place */
|
||||
applyHannWindow(input) {
|
||||
for (var i = 0; i < this.blockSize; i++) {
|
||||
input[i] = input[i] * this.hannWindow[i] * 1.62;
|
||||
for (let i = 0; i < this.blockSize; i++) {
|
||||
input[i] *= this.hannWindow[i] * 1.62;
|
||||
}
|
||||
}
|
||||
|
||||
/** Compute squared magnitudes for peak finding **/
|
||||
computeMagnitudes() {
|
||||
var i = 0,
|
||||
let i = 0,
|
||||
j = 0;
|
||||
while (i < this.magnitudes.length) {
|
||||
let real = this.freqComplexBuffer[j];
|
||||
let imag = this.freqComplexBuffer[j + 1];
|
||||
const real = this.freqComplexBuffer[j];
|
||||
const imag = this.freqComplexBuffer[j + 1];
|
||||
// no need to sqrt for peak finding
|
||||
this.magnitudes[i] = real ** 2 + imag ** 2;
|
||||
i += 1;
|
||||
|
|
@ -660,12 +646,10 @@ class PhaseVocoderProcessor extends OLAProcessor {
|
|||
/** Find peaks in spectrum magnitudes **/
|
||||
findPeaks() {
|
||||
this.nbPeaks = 0;
|
||||
var i = 2;
|
||||
let end = this.magnitudes.length - 2;
|
||||
|
||||
let i = 2;
|
||||
const end = this.magnitudes.length - 2;
|
||||
while (i < end) {
|
||||
let mag = this.magnitudes[i];
|
||||
|
||||
const mag = this.magnitudes[i];
|
||||
if (this.magnitudes[i - 1] >= mag || this.magnitudes[i - 2] >= mag) {
|
||||
i++;
|
||||
continue;
|
||||
|
|
@ -674,7 +658,6 @@ class PhaseVocoderProcessor extends OLAProcessor {
|
|||
i++;
|
||||
continue;
|
||||
}
|
||||
|
||||
this.peakIndexes[this.nbPeaks] = i;
|
||||
this.nbPeaks++;
|
||||
i += 2;
|
||||
|
|
@ -685,53 +668,44 @@ class PhaseVocoderProcessor extends OLAProcessor {
|
|||
shiftPeaks(pitchFactor) {
|
||||
// zero-fill new spectrum
|
||||
this.freqComplexBufferShifted.fill(0);
|
||||
|
||||
for (var i = 0; i < this.nbPeaks; i++) {
|
||||
let peakIndex = this.peakIndexes[i];
|
||||
let peakIndexShifted = Math.round(peakIndex * pitchFactor);
|
||||
|
||||
for (let i = 0; i < this.nbPeaks; i++) {
|
||||
const peakIndex = this.peakIndexes[i];
|
||||
const peakIndexShifted = fround(peakIndex * pitchFactor);
|
||||
if (peakIndexShifted > this.magnitudes.length) {
|
||||
break;
|
||||
}
|
||||
|
||||
// find region of influence
|
||||
var startIndex = 0;
|
||||
var endIndex = this.fftSize;
|
||||
let startIndex = 0;
|
||||
let endIndex = this.fftSize;
|
||||
if (i > 0) {
|
||||
let peakIndexBefore = this.peakIndexes[i - 1];
|
||||
startIndex = peakIndex - Math.floor((peakIndex - peakIndexBefore) / 2);
|
||||
startIndex = peakIndex - fround((peakIndex - this.peakIndexes[i - 1]) / 2);
|
||||
}
|
||||
if (i < this.nbPeaks - 1) {
|
||||
let peakIndexAfter = this.peakIndexes[i + 1];
|
||||
endIndex = peakIndex + Math.ceil((peakIndexAfter - peakIndex) / 2);
|
||||
endIndex = peakIndex + fceil((this.peakIndexes[i + 1] - peakIndex) / 2);
|
||||
}
|
||||
|
||||
// shift whole region of influence around peak to shifted peak
|
||||
let startOffset = startIndex - peakIndex;
|
||||
let endOffset = endIndex - peakIndex;
|
||||
for (var j = startOffset; j < endOffset; j++) {
|
||||
let binIndex = peakIndex + j;
|
||||
let binIndexShifted = peakIndexShifted + j;
|
||||
|
||||
const startOffset = startIndex - peakIndex;
|
||||
const endOffset = endIndex - peakIndex;
|
||||
const omegaDelta = TWO_PI * this.invfftSize * (peakIndexShifted - peakIndex);
|
||||
const phaseShiftReal = Math.cos(omegaDelta * this.timeCursor);
|
||||
const phaseShiftImag = Math.sin(omegaDelta * this.timeCursor);
|
||||
for (let j = startOffset; j < endOffset; j++) {
|
||||
const binIndex = peakIndex + j;
|
||||
const binIndexShifted = peakIndexShifted + j;
|
||||
if (binIndexShifted >= this.magnitudes.length) {
|
||||
break;
|
||||
}
|
||||
|
||||
// apply phase correction
|
||||
let omegaDelta = (2 * Math.PI * (binIndexShifted - binIndex)) / this.fftSize;
|
||||
let phaseShiftReal = Math.cos(omegaDelta * this.timeCursor);
|
||||
let phaseShiftImag = Math.sin(omegaDelta * this.timeCursor);
|
||||
const indexReal = 2 * binIndex;
|
||||
const indexImag = indexReal + 1;
|
||||
const valueReal = this.freqComplexBuffer[indexReal];
|
||||
const valueImag = this.freqComplexBuffer[indexImag];
|
||||
|
||||
let indexReal = binIndex * 2;
|
||||
let indexImag = indexReal + 1;
|
||||
let valueReal = this.freqComplexBuffer[indexReal];
|
||||
let valueImag = this.freqComplexBuffer[indexImag];
|
||||
const valueShiftedReal = valueReal * phaseShiftReal - valueImag * phaseShiftImag;
|
||||
const valueShiftedImag = valueReal * phaseShiftImag + valueImag * phaseShiftReal;
|
||||
|
||||
let valueShiftedReal = valueReal * phaseShiftReal - valueImag * phaseShiftImag;
|
||||
let valueShiftedImag = valueReal * phaseShiftImag + valueImag * phaseShiftReal;
|
||||
|
||||
let indexShiftedReal = binIndexShifted * 2;
|
||||
let indexShiftedImag = indexShiftedReal + 1;
|
||||
const indexShiftedReal = 2 * binIndexShifted;
|
||||
const indexShiftedImag = indexShiftedReal + 1;
|
||||
this.freqComplexBufferShifted[indexShiftedReal] += valueShiftedReal;
|
||||
this.freqComplexBufferShifted[indexShiftedImag] += valueShiftedImag;
|
||||
}
|
||||
|
|
@ -745,11 +719,10 @@ registerProcessor('phase-vocoder-processor', PhaseVocoderProcessor);
|
|||
class PulseOscillatorProcessor extends AudioWorkletProcessor {
|
||||
constructor() {
|
||||
super();
|
||||
this.pi = _PI;
|
||||
this.phi = -this.pi; // phase
|
||||
this.phi = -PI; // phase
|
||||
this.Y0 = 0; // feedback memories
|
||||
this.Y1 = 0;
|
||||
this.PW = this.pi; // pulse width
|
||||
this.PW = PI; // pulse width
|
||||
this.B = 2.3; // feedback coefficient
|
||||
this.dphif = 0; // filtered phase increment
|
||||
this.envf = 0; // filtered envelope
|
||||
|
|
@ -806,11 +779,11 @@ class PulseOscillatorProcessor extends AudioWorkletProcessor {
|
|||
dphi;
|
||||
|
||||
for (let i = 0; i < (output[0].length ?? 0); i++) {
|
||||
const pw = (1 - clamp(getParamValue(i, params.pulsewidth), -0.99, 0.99)) * this.pi;
|
||||
const detune = getParamValue(i, params.detune);
|
||||
const freq = applySemitoneDetuneToFrequency(getParamValue(i, params.frequency), detune / 100);
|
||||
const pw = (1 - clamp(pv(params.pulsewidth, i), -0.99, 0.99)) * PI;
|
||||
const detune = pv(params.detune, i);
|
||||
const freq = applySemitoneDetuneToFrequency(pv(params.frequency, i), detune / 100);
|
||||
|
||||
dphi = freq * (this.pi / (sampleRate * 0.5)); // phase increment
|
||||
dphi = freq * TWO_PI * INVSR; // phase increment
|
||||
this.dphif += 0.1 * (dphi - this.dphif);
|
||||
|
||||
env *= 0.9998; // exponential decay envelope
|
||||
|
|
@ -822,7 +795,7 @@ class PulseOscillatorProcessor extends AudioWorkletProcessor {
|
|||
|
||||
// Waveform generation (half-Tomisawa oscillators)
|
||||
this.phi += this.dphif; // phase increment
|
||||
if (this.phi >= this.pi) this.phi -= 2 * this.pi; // phase wrapping
|
||||
if (this.phi >= PI) this.phi -= TWO_PI; // phase wrapping
|
||||
|
||||
// First half-Tomisawa generator
|
||||
let out0 = Math.cos(this.phi + this.B * this.Y0); // self-phase modulation
|
||||
|
|
@ -852,24 +825,23 @@ const chyx = {
|
|||
/*bit reverse*/ br: function (x, size = 8) {
|
||||
if (size > 32) {
|
||||
throw new Error('br() Size cannot be greater than 32');
|
||||
} else {
|
||||
let result = 0;
|
||||
for (let idx = 0; idx < size - 0; idx++) {
|
||||
result += chyx.bitC(x, 2 ** idx, 2 ** (size - (idx + 1)));
|
||||
}
|
||||
return result;
|
||||
}
|
||||
let result = 0;
|
||||
for (let idx = 0; idx < size; idx++) {
|
||||
result |= chyx.bitC(x, 1 << idx, 1 << (size - (idx + 1)));
|
||||
}
|
||||
return result;
|
||||
},
|
||||
/*sin that loops every 128 "steps", instead of every pi steps*/ sinf: function (x) {
|
||||
return Math.sin(x / (128 / Math.PI));
|
||||
return Math.sin((x * PI) / 128);
|
||||
},
|
||||
/*cos that loops every 128 "steps", instead of every pi steps*/ cosf: function (x) {
|
||||
return Math.cos(x / (128 / Math.PI));
|
||||
return Math.cos((x * PI) / 128);
|
||||
},
|
||||
/*tan that loops every 128 "steps", instead of every pi steps*/ tanf: function (x) {
|
||||
return Math.tan(x / (128 / Math.PI));
|
||||
return Math.tan((x * PI) / 128);
|
||||
},
|
||||
/*converts t into a string composed of it's bits, regex's that*/ regG: function (t, X) {
|
||||
/*converts t into a string composed of its bits; regexes that*/ regG: function (t, X) {
|
||||
return X.test(t.toString(2));
|
||||
},
|
||||
};
|
||||
|
|
@ -877,7 +849,7 @@ const chyx = {
|
|||
// Create shortened Math functions
|
||||
let mathParams, byteBeatHelperFuncs;
|
||||
function getByteBeatFunc(codetext) {
|
||||
if ((mathParams || byteBeatHelperFuncs) == null) {
|
||||
if (mathParams == null) {
|
||||
mathParams = Object.getOwnPropertyNames(Math);
|
||||
byteBeatHelperFuncs = mathParams.map((k) => Math[k]);
|
||||
const chyxNames = Object.getOwnPropertyNames(chyx);
|
||||
|
|
@ -910,7 +882,7 @@ class ByteBeatProcessor extends AudioWorkletProcessor {
|
|||
|
||||
this.func = getByteBeatFunc(codeText);
|
||||
};
|
||||
this.initialOffset = null;
|
||||
this.initialOffset = 0;
|
||||
this.t = null;
|
||||
this.func = null;
|
||||
}
|
||||
|
|
@ -957,18 +929,19 @@ class ByteBeatProcessor extends AudioWorkletProcessor {
|
|||
this.t = params.begin[0] * sampleRate;
|
||||
}
|
||||
const output = outputs[0];
|
||||
const scale = 256 * INVSR;
|
||||
for (let i = 0; i < output[0].length; i++) {
|
||||
const detune = getParamValue(i, params.detune);
|
||||
const freq = applySemitoneDetuneToFrequency(getParamValue(i, params.frequency), detune / 100);
|
||||
let local_t = (this.t / (sampleRate / 256)) * freq + this.initialOffset;
|
||||
const detune = pv(params.detune, i);
|
||||
const freq = applySemitoneDetuneToFrequency(pv(params.frequency, i), detune / 100);
|
||||
const local_t = scale * freq * this.t + this.initialOffset;
|
||||
const funcValue = this.func(local_t);
|
||||
let signal = (funcValue & 255) / 127.5 - 1;
|
||||
const out = signal * 0.2;
|
||||
const signal = (funcValue & 255) / 127.5 - 1;
|
||||
//prevent speaker blowout via clipping if threshold exceeds
|
||||
const out = clamp(signal * 0.2, -0.4, 0.4);
|
||||
for (let c = 0; c < output.length; c++) {
|
||||
//prevent speaker blowout via clipping if threshold exceeds
|
||||
output[c][i] = clamp(out, -0.4, 0.4);
|
||||
output[c][i] = out;
|
||||
}
|
||||
this.t = this.t + 1;
|
||||
this.t++;
|
||||
}
|
||||
|
||||
return true; // keep the audio processing going
|
||||
|
|
@ -977,6 +950,102 @@ class ByteBeatProcessor extends AudioWorkletProcessor {
|
|||
|
||||
registerProcessor('byte-beat-processor', ByteBeatProcessor);
|
||||
|
||||
class EnvelopeProcessor extends AudioWorkletProcessor {
|
||||
static get parameterDescriptors() {
|
||||
return [
|
||||
{ name: 'begin', defaultValue: 0 },
|
||||
{ name: 'end', defaultValue: 0 },
|
||||
{ name: 'attack', defaultValue: 0.005, minValue: 0 },
|
||||
{ name: 'decay', defaultValue: 0.14, minValue: 0 },
|
||||
{ name: 'sustain', defaultValue: 0, minValue: 0, maxValue: 1 },
|
||||
{ name: 'release', defaultValue: 0.1, minValue: 0 },
|
||||
{ name: 'attackCurve', defaultValue: 0, minValue: -1, maxValue: 1 },
|
||||
{ name: 'decayCurve', defaultValue: 0, minValue: -1, maxValue: 1 },
|
||||
{ name: 'releaseCurve', defaultValue: 0, minValue: -1, maxValue: 1 },
|
||||
{ name: 'peak', defaultValue: 1 },
|
||||
{ name: 'retrigger', defaultValue: 1, minValue: 0, maxValue: 1 },
|
||||
];
|
||||
}
|
||||
|
||||
constructor() {
|
||||
super();
|
||||
this.val = 0;
|
||||
this.segIdx = 0;
|
||||
this.state = 0;
|
||||
this.beginTime = 0;
|
||||
this.endTime = 0;
|
||||
this.attackStart = 0;
|
||||
}
|
||||
|
||||
_warp(phase, curvature, strength = 8) {
|
||||
if (phase === 0 || phase === 1) return phase; // fast exit
|
||||
if (curvature > 0) {
|
||||
// snappier
|
||||
const exp = 1 + strength * curvature;
|
||||
return 1 - Math.pow(1 - phase, exp);
|
||||
} else {
|
||||
// more calm
|
||||
const exp = 1 - strength * curvature;
|
||||
return Math.pow(phase, exp);
|
||||
}
|
||||
}
|
||||
|
||||
_advance(start, target, time, curvature) {
|
||||
if (time === 0 || start === target) {
|
||||
this.val = target;
|
||||
} else {
|
||||
// We compute our progress through this section of the envelope in time
|
||||
// as a `phase` value, which is warped by the curvature, and then used
|
||||
// to compute the value of the envelope at that time
|
||||
const phase = Math.min(1, (currentTime - this.beginTime) / time);
|
||||
const phaseWarped = this._warp(phase, curvature);
|
||||
this.val = start + (target - start) * phaseWarped;
|
||||
}
|
||||
}
|
||||
|
||||
process(_inputs, outputs, params) {
|
||||
const out = outputs[0][0];
|
||||
if (!out) return true;
|
||||
const begin = pv(params.begin, 0);
|
||||
const retrigger = pv(params.retrigger, 0) >= 0.5; // convert to bool
|
||||
if (begin !== this.beginTime && (this.state === 0 || retrigger)) {
|
||||
// triggered
|
||||
this.beginTime = begin;
|
||||
this.state = 1;
|
||||
this.endTime = pv(params.end, 0);
|
||||
this.attackStart = this.val;
|
||||
}
|
||||
const susTime = this.endTime - this.beginTime;
|
||||
for (let i = 0; i < out.length; i++) {
|
||||
const attack = pv(params.attack, i);
|
||||
const decay = pv(params.decay, i);
|
||||
const sustain = pv(params.sustain, i);
|
||||
const release = pv(params.release, i);
|
||||
const aCurve = pv(params.attackCurve, i);
|
||||
const dCurve = pv(params.decayCurve, i);
|
||||
const rCurve = pv(params.releaseCurve, i);
|
||||
const peak = pv(params.peak, i);
|
||||
const states = [
|
||||
{ time: Number.POSITIVE_INFINITY, start: 0, target: 0 }, // idle
|
||||
{ time: attack, start: this.attackStart, target: 1, curve: aCurve },
|
||||
{ time: attack + decay, start: 1, target: sustain, curve: dCurve },
|
||||
{ time: susTime, start: sustain, target: sustain },
|
||||
{ time: susTime + release, start: sustain, target: 0, curve: rCurve },
|
||||
];
|
||||
let { time, start, target, curve } = states[this.state];
|
||||
this._advance(start, target, time, curve);
|
||||
while (currentTime - this.beginTime >= time) {
|
||||
this.state = (this.state + 1) % states.length;
|
||||
time = states[this.state].time;
|
||||
}
|
||||
out[i] = this.val * peak;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
registerProcessor('envelope-processor', EnvelopeProcessor);
|
||||
|
||||
export const WarpMode = Object.freeze({
|
||||
NONE: 0,
|
||||
ASYM: 1,
|
||||
|
|
@ -1056,7 +1125,7 @@ class WavetableOscillatorProcessor extends AudioWorkletProcessor {
|
|||
{ name: 'position', defaultValue: 0, min: 0, max: 1 },
|
||||
{ name: 'warp', defaultValue: 0, min: 0, max: 1 },
|
||||
{ name: 'warpMode', defaultValue: 0 },
|
||||
{ name: 'voices', defaultValue: 1, min: 1 },
|
||||
{ name: 'voices', defaultValue: 1, min: 1, automationRate: 'k-rate' },
|
||||
{ name: 'panspread', defaultValue: 0.7, min: 0, max: 1 },
|
||||
{ name: 'phaserand', defaultValue: 0, min: 0, max: 1 },
|
||||
];
|
||||
|
|
@ -1067,7 +1136,6 @@ class WavetableOscillatorProcessor extends AudioWorkletProcessor {
|
|||
this.frameLen = 0;
|
||||
this.numFrames = 0;
|
||||
this.phase = [];
|
||||
this.invSR = 1 / sampleRate;
|
||||
|
||||
this.port.onmessage = (e) => {
|
||||
const { type, payload } = e.data || {};
|
||||
|
|
@ -1104,7 +1172,7 @@ class WavetableOscillatorProcessor extends AudioWorkletProcessor {
|
|||
|
||||
_toBits(amt, min = 2, max = 12) {
|
||||
const b = max + (min - max) * amt;
|
||||
return { b, n: Math.round(Math.pow(2, b)) };
|
||||
return { b, n: fround(Math.pow(2, b)) };
|
||||
}
|
||||
|
||||
_warpPhase(phase, amt, mode) {
|
||||
|
|
@ -1130,7 +1198,7 @@ class WavetableOscillatorProcessor extends AudioWorkletProcessor {
|
|||
return amt < 0.5 ? this._warpPhase(phase, 1 - 2 * amt, 3) : this._warpPhase(phase, 2 * amt - 1, 2);
|
||||
}
|
||||
case WarpMode.SYNC: {
|
||||
const syncRatio = Math.pow(16, amt * amt);
|
||||
const syncRatio = Math.pow(16, amt ** 2);
|
||||
return (phase * syncRatio) % 1;
|
||||
}
|
||||
case WarpMode.QUANT: {
|
||||
|
|
@ -1139,8 +1207,8 @@ class WavetableOscillatorProcessor extends AudioWorkletProcessor {
|
|||
}
|
||||
case WarpMode.FOLD: {
|
||||
const K = 7;
|
||||
const k = 1 + Math.max(1, Math.round(K * amt));
|
||||
return Math.abs(frac(k * phase) - 0.5) * 2;
|
||||
const k = 1 + Math.max(1, fround(K * amt));
|
||||
return Math.abs(ffrac(k * phase) - 0.5) * 2;
|
||||
}
|
||||
case WarpMode.PWM: {
|
||||
const w = clamp(0.5 + 0.49 * (2 * amt - 1), 0, 1);
|
||||
|
|
@ -1150,12 +1218,12 @@ class WavetableOscillatorProcessor extends AudioWorkletProcessor {
|
|||
case WarpMode.ORBIT: {
|
||||
const depth = 0.5 * amt;
|
||||
const n = 3;
|
||||
return frac(phase + depth * Math.sin(2 * Math.PI * n * phase));
|
||||
return frac(phase + depth * Math.sin(TWO_PI * n * phase));
|
||||
}
|
||||
case WarpMode.SPIN: {
|
||||
const depth = 0.5 * amt;
|
||||
const { n } = this._toBits(amt, 1, 6);
|
||||
return frac(phase + depth * Math.sin(2 * Math.PI * n * phase));
|
||||
return frac(phase + depth * Math.sin(TWO_PI * n * phase));
|
||||
}
|
||||
case WarpMode.CHAOS: {
|
||||
const r = 3.7 + 0.3 * amt;
|
||||
|
|
@ -1166,7 +1234,7 @@ class WavetableOscillatorProcessor extends AudioWorkletProcessor {
|
|||
const isPrime = (n) => {
|
||||
if (n < 2) return false;
|
||||
if (n % 2 === 0) return n === 2;
|
||||
for (let d = 3; d * d <= n; d += 2) if (n % d === 0) return false;
|
||||
for (let d = 3; d ** 2 <= n; d += 2) if (n % d === 0) return false;
|
||||
return true;
|
||||
};
|
||||
let { n } = this._toBits(amt, 3);
|
||||
|
|
@ -1175,18 +1243,12 @@ class WavetableOscillatorProcessor extends AudioWorkletProcessor {
|
|||
}
|
||||
case WarpMode.BINARY: {
|
||||
let { b } = this._toBits(amt, 3);
|
||||
b = Math.round(b);
|
||||
b = fround(b);
|
||||
const n = 1 << b;
|
||||
const idx = ffloor(phase * n);
|
||||
const ridx = bitReverse(idx, b);
|
||||
return ridx / n;
|
||||
}
|
||||
case WarpMode.MODULAR: {
|
||||
const { n } = this._toBits(amt);
|
||||
const depth = 0.5 * amt;
|
||||
const jump = frac(phase * n) / n;
|
||||
return frac(phase + depth * jump);
|
||||
}
|
||||
case WarpMode.BROWNIAN: {
|
||||
const disp = 0.25 * amt * brownian(64 * phase, 4);
|
||||
return frac(phase + disp);
|
||||
|
|
@ -1209,7 +1271,7 @@ class WavetableOscillatorProcessor extends AudioWorkletProcessor {
|
|||
case WarpMode.LOGISTIC: {
|
||||
let x = phase;
|
||||
const r = 3.6 + 0.4 * amt;
|
||||
const iters = 1 + Math.round(2 * amt);
|
||||
const iters = 1 + fround(2 * amt);
|
||||
for (let i = 0; i < iters; i++) x = r * x * (1 - x);
|
||||
return clamp(x, 0, 1);
|
||||
}
|
||||
|
|
@ -1222,7 +1284,7 @@ class WavetableOscillatorProcessor extends AudioWorkletProcessor {
|
|||
return (y - y0) / (y1 - y0);
|
||||
}
|
||||
case WarpMode.FRACTAL: {
|
||||
const d = 0.5 * Math.sin(2 * Math.PI * phase) * amt;
|
||||
const d = 0.5 * Math.sin(TWO_PI * phase) * amt;
|
||||
return frac(phase + d);
|
||||
}
|
||||
case WarpMode.FLIP: {
|
||||
|
|
@ -1269,6 +1331,7 @@ class WavetableOscillatorProcessor extends AudioWorkletProcessor {
|
|||
if (outR !== outL) outR.set(outL);
|
||||
return true;
|
||||
}
|
||||
const voices = parameters.voices[0]; // k-rate
|
||||
for (let i = 0; i < outL.length; i++) {
|
||||
const detune = pv(parameters.detune, i);
|
||||
const freqspread = pv(parameters.freqspread, i);
|
||||
|
|
@ -1278,7 +1341,6 @@ class WavetableOscillatorProcessor extends AudioWorkletProcessor {
|
|||
const frac = idx - fIdx;
|
||||
const warpAmount = clamp(pv(parameters.warp, i), 0, 1);
|
||||
const warpMode = pv(parameters.warpMode, i);
|
||||
const voices = pv(parameters.voices, i);
|
||||
const phaseRand = clamp(pv(parameters.phaserand, i), 0, 1);
|
||||
const panspread = voices > 1 ? clamp(pv(parameters.panspread, i), 0, 1) : 0;
|
||||
const gain1 = Math.sqrt(0.5 - 0.5 * panspread);
|
||||
|
|
@ -1286,6 +1348,7 @@ class WavetableOscillatorProcessor extends AudioWorkletProcessor {
|
|||
let f = pv(parameters.frequency, i);
|
||||
f = applySemitoneDetuneToFrequency(f, detune / 100); // overall detune
|
||||
const normalizer = 1 / Math.sqrt(voices);
|
||||
const detuner = getDetuner(voices, freqspread);
|
||||
for (let n = 0; n < voices; n++) {
|
||||
const isOdd = (n & 1) == 1;
|
||||
let gainL = gain1;
|
||||
|
|
@ -1295,8 +1358,8 @@ class WavetableOscillatorProcessor extends AudioWorkletProcessor {
|
|||
gainL = gain2;
|
||||
gainR = gain1;
|
||||
}
|
||||
const fVoice = applySemitoneDetuneToFrequency(f, getUnisonDetune(voices, freqspread, n)); // voice detune
|
||||
const dPhase = fVoice * this.invSR;
|
||||
const fVoice = applySemitoneDetuneToFrequency(f, detuner(n)); // voice detune
|
||||
const dPhase = fVoice * INVSR;
|
||||
const level = this._chooseMip(dPhase);
|
||||
const table = this.tables[level];
|
||||
|
||||
|
|
@ -1311,7 +1374,7 @@ class WavetableOscillatorProcessor extends AudioWorkletProcessor {
|
|||
}
|
||||
outL[i] += s * gainL * normalizer;
|
||||
outR[i] += s * gainR * normalizer;
|
||||
this.phase[n] = wrapPhase(this.phase[n] + dPhase);
|
||||
this.phase[n] = ffrac(this.phase[n] + dPhase);
|
||||
}
|
||||
}
|
||||
return true;
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue