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Merge remote-tracking branch 'origin/HEAD' into feedbackdelay

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This commit is contained in:
Felix Roos 2022-09-22 19:22:08 +02:00
commit 5c99b72e2f
10 changed files with 11442 additions and 11080 deletions
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54
packages/webaudio/webaudio.mjs
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@ -170,6 +170,7 @@ function gainNode(value) {
node.gain.value = value;
return node;
}
const cutGroups = [];
Pattern.prototype.out = function () {
return this.onTrigger(async (t, hap, ct, cps) => {
@ -198,8 +199,8 @@ Pattern.prototype.out = function () {
shape,
pan,
attack = 0.001,
decay = 0.05,
sustain = 0.5,
decay = 0.001,
sustain = 1,
release = 0.001,
speed = 1, // sample playback speed
begin = 0,
@ -208,6 +209,10 @@ Pattern.prototype.out = function () {
delay = 0,
delayfeedback = 0,
delaytime = 0,
unit,
nudge = 0, // TODO: is this in seconds?
cut,
loop,
} = hap.value;
const { velocity = 1 } = hap.context;
gain *= velocity; // legacy fix for velocity
@ -273,28 +278,33 @@ Pattern.prototype.out = function () {
return;
}
bufferSource.playbackRate.value = Math.abs(speed) * bufferSource.playbackRate.value;
// TODO: nudge, unit, cut, loop
let duration = soundfont || clip ? hapDuration : bufferSource.buffer.duration;
// let duration = bufferSource.buffer.duration;
const offset = begin * duration;
duration = ((end - begin) * duration) / Math.abs(speed);
if (soundfont || clip) {
bufferSource.start(t, offset); // duration does not work here for some reason
} else {
bufferSource.start(t, offset, duration);
if (unit === 'c') {
// are there other units?
bufferSource.playbackRate.value = bufferSource.playbackRate.value * bufferSource.buffer.duration;
}
let duration = soundfont || clip ? hapDuration : bufferSource.buffer.duration / bufferSource.playbackRate.value;
// "The computation of the offset into the sound is performed using the sound buffer's natural sample rate,
// rather than the current playback rate, so even if the sound is playing at twice its normal speed,
// the midway point through a 10-second audio buffer is still 5."
const offset = begin * duration * bufferSource.playbackRate.value;
duration = (end - begin) * duration;
if (loop) {
bufferSource.loop = true;
bufferSource.loopStart = offset;
bufferSource.loopEnd = offset + duration;
duration = loop * duration;
}
t += nudge;
bufferSource.start(t, offset);
if (cut !== undefined) {
cutGroups[cut]?.stop(t); // fade out?
cutGroups[cut] = bufferSource;
}
chain.push(bufferSource);
if (soundfont || clip) {
const releaseLength = 0.1;
const env = gainNode(0.6);
env.gain.setValueAtTime(env.gain.value, t + duration);
env.gain.linearRampToValueAtTime(0, t + duration + releaseLength);
// env.gain.linearRampToValueAtTime(0, t + duration + releaseLength);
chain.push(env);
bufferSource.stop(t + duration + releaseLength);
} else {
bufferSource.stop(t + duration);
}
bufferSource.stop(t + duration + release);
const adsr = getADSR(attack, decay, sustain, release, 1, t, t + duration);
chain.push(adsr);
}
// level down before effects
chain.push(gainNode(gain));