Merge branch 'main' into lu/strans
This commit is contained in:
commit
ed58d26da6
7 changed files with 254 additions and 9 deletions
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@ -252,6 +252,20 @@ export const { fmenv } = registerControl('fmenv');
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*
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*/
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export const { fmattack } = registerControl('fmattack');
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/**
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* waveform of the fm modulator
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*
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* @name fmwave
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* @param {number | Pattern} wave waveform
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* @example
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* n("0 1 2 3".fast(4)).scale("d:minor").s("sine").fmwave("<sine square sawtooth crackle>").fm(4).fmh(2.01)
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* @example
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* n("0 1 2 3".fast(4)).chord("<Dm Am F G>").voicing().s("sawtooth").fmwave("brown").fm(.6)
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*
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*/
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export const { fmwave } = registerControl('fmwave');
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/**
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* Decay time for the FM envelope: seconds until the sustain level is reached after the attack phase.
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*
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@ -306,6 +320,7 @@ export const { fft } = registerControl('fft');
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*
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* @name decay
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* @param {number | Pattern} time decay time in seconds
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* @synonyms dec
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* @example
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* note("c3 e3 f3 g3").decay("<.1 .2 .3 .4>").sustain(0)
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*
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@ -1569,7 +1569,7 @@ export const func = curry((a, b) => reify(b).func(a));
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/**
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* Registers a new pattern method. The method is added to the Pattern class + the standalone function is returned from register.
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*
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* @param {string} name name of the function
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* @param {string | string[]} name name of the function, or an array of names to be used as synonyms
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* @param {function} func function with 1 or more params, where last is the current pattern
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* @noAutocomplete
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*
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@ -1,5 +1,8 @@
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import { getAudioContext } from './superdough.mjs';
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import { clamp, nanFallback } from './util.mjs';
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import { getNoiseBuffer } from './noise.mjs';
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export const noises = ['pink', 'white', 'brown', 'crackle'];
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export function gainNode(value) {
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const node = getAudioContext().createGain();
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@ -216,9 +219,17 @@ export function webAudioTimeout(audioContext, onComplete, startTime, stopTime) {
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}
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const mod = (freq, range = 1, type = 'sine') => {
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const ctx = getAudioContext();
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const osc = ctx.createOscillator();
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osc.type = type;
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osc.frequency.value = freq;
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let osc;
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if (noises.includes(type)) {
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osc = ctx.createBufferSource();
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osc.buffer = getNoiseBuffer(type, 2);
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osc.loop = true;
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} else {
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osc = ctx.createOscillator();
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osc.type = type;
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osc.frequency.value = freq;
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}
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osc.start();
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const g = new GainNode(ctx, { gain: range });
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osc.connect(g); // -range, range
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@ -4,7 +4,7 @@ import { getAudioContext } from './superdough.mjs';
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let noiseCache = {};
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// lazy generates noise buffers and keeps them forever
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function getNoiseBuffer(type, density) {
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export function getNoiseBuffer(type, density) {
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const ac = getAudioContext();
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if (noiseCache[type]) {
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return noiseCache[type];
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@ -9,12 +9,13 @@ import {
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getVibratoOscillator,
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webAudioTimeout,
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getWorklet,
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noises,
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} from './helpers.mjs';
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import { getNoiseMix, getNoiseOscillator } from './noise.mjs';
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const getFrequencyFromValue = (value) => {
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const getFrequencyFromValue = (value, defaultNote = 36) => {
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let { note, freq } = value;
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note = note || 36;
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note = note || defaultNote;
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if (typeof note === 'string') {
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note = noteToMidi(note); // e.g. c3 => 48
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}
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@ -40,7 +41,17 @@ const waveformAliases = [
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['saw', 'sawtooth'],
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['sin', 'sine'],
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];
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const noises = ['pink', 'white', 'brown', 'crackle'];
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function makeSaturationCurve(amount, n_samples) {
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const k = typeof amount === 'number' ? amount : 50;
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const curve = new Float32Array(n_samples);
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for (let i = 0; i < n_samples; i++) {
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const x = (i * 2) / n_samples - 1;
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curve[i] = Math.tanh(x * k);
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}
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return curve;
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}
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export function registerSynthSounds() {
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[...waveforms].forEach((s) => {
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@ -84,6 +95,75 @@ export function registerSynthSounds() {
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{ type: 'synth', prebake: true },
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);
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});
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registerSound(
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'sbd',
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(t, value, onended) => {
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const { duration, decay = 0.5, pdecay = 0.5, penv = 36, clip } = value;
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const ctx = getAudioContext();
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const attackhold = 0.02;
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const noiselvl = 1.2;
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const noisedecay = 0.025;
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const mixGain = 1;
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const o = ctx.createOscillator();
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o.type = 'triangle';
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o.frequency.value = getFrequencyFromValue(value, 29);
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o.detune.setValueAtTime(penv * 100, 0);
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o.detune.setValueAtTime(penv * 100, t);
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o.detune.exponentialRampToValueAtTime(0.001, t + pdecay);
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const g = gainNode(1);
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g.gain.setValueAtTime(1, t + attackhold);
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g.gain.exponentialRampToValueAtTime(0.001, t + attackhold + decay);
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o.start(t);
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const noise = getNoiseOscillator('brown', t, 2);
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const noiseGain = gainNode(1);
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noiseGain.gain.setValueAtTime(noiselvl, t);
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noiseGain.gain.exponentialRampToValueAtTime(0.001, t + noisedecay);
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const sat = new WaveShaperNode(ctx);
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// tri to sine diode shaper emulation
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sat.curve = makeSaturationCurve(2, ctx.sampleRate);
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const mix = gainNode(mixGain);
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o.onended = () => {
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o.disconnect();
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g.disconnect();
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sat.disconnect();
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noise.node.disconnect();
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noiseGain.disconnect();
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mix.disconnect();
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onended();
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};
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const node = o.connect(sat).connect(g).connect(mix);
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noise.node.connect(noiseGain).connect(mix);
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const holdEnd = t + decay;
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let end = holdEnd + 0.01;
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if (clip != null) {
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end = Math.min(t + clip * duration, end);
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}
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// prevent clicking
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mix.gain.setValueAtTime(mixGain, end - 0.01);
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mix.gain.linearRampToValueAtTime(0, end);
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o.stop(end);
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noise.stop(end);
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return {
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node,
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stop: (endTime) => {
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o.stop(endTime);
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},
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};
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},
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{ type: 'synth', prebake: true },
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);
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registerSound(
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'supersaw',
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(begin, value, onended) => {
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@ -88,13 +88,14 @@ function scaleOffset(scale, offset, note) {
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* @returns Pattern
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* @memberof Pattern
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* @name transpose
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* @synonyms trans
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* @example
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* "c2 c3".fast(2).transpose("<0 -2 5 3>".slow(2)).note()
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* @example
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* "c2 c3".fast(2).transpose("<1P -2M 4P 3m>".slow(2)).note()
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*/
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export const transpose = register('transpose', function (intervalOrSemitones, pat) {
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export const transpose = register(['transpose', 'trans'], function transposeFn(intervalOrSemitones, pat) {
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return pat.withHap((hap) => {
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const note = hap.value.note ?? hap.value;
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if (typeof note === 'number') {
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