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Add LFOs and envelopes

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Aria 2025-09-27 12:48:37 -07:00
parent 8c3ee6db6b
commit 917d01c47d
5 changed files with 247 additions and 34 deletions
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37
packages/superdough/wavetable.mjs
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@ -4,6 +4,7 @@ import {
destroyAudioWorkletNode,
getADSRValues,
getFrequencyFromValue,
getLfo,
getParamADSR,
getPitchEnvelope,
getVibratoOscillator,
@ -235,7 +236,8 @@ async function onTriggerSynth(t, value, onended, tables, frameLen) {
const { tableUrl, label } = getTableInfo(value, tables);
const payload = await loadWavetableFrames(tableUrl, label, frameLen);
const holdEnd = t + duration;
const envEnd = holdEnd + release + 0.01;
const endWithRelease = holdEnd + release;
const envEnd = endWithRelease + 0.01;
const source = getWorklet(
ac,
'wavetable-oscillator-processor',
@ -258,6 +260,37 @@ async function onTriggerSynth(t, value, onended, tables, frameLen) {
logger(`[wavetable] still loading sound "${s}:${n}"`, 'highlight');
return;
}
const posADSRParams = [value.wtPosAttack, value.wtPosDecay, value.wtPosSustain, value.wtPosRelease];
const warpADSRParams = [value.wtPosAttack, value.wtPosDecay, value.wtPosSustain, value.wtPosRelease];
const wtParams = source.parameters;
const positionParam = wtParams.get('position');
const warpParam = wtParams.get('warp');
if (posADSRParams.some((p) => p !== undefined)) {
const [pAttack, pDecay, pSustain, pRelease] = getADSRValues(posADSRParams);
getParamADSR(positionParam, pAttack, pDecay, pSustain, pRelease, 0, 1, t, holdEnd, 'linear');
} else {
const posLFO = getLfo(ac, t, endWithRelease, {
frequency: value.wtPosRate,
depth: value.wtPosDepth,
shape: value.wtPosShape,
skew: value.wtPosSkew,
dcoffset: value.wtPosDCOffset ?? 0,
});
posLFO.connect(positionParam);
}
if (posADSRParams.some((p) => p !== undefined)) {
const [wAttack, wDecay, wSustain, wRelease] = getADSRValues(warpADSRParams);
getParamADSR(warpParam, wAttack, wDecay, wSustain, wRelease, 0, 1, t, holdEnd, 'linear');
} else {
const warpLFO = getLfo(ac, t, endWithRelease, {
frequency: value.wtWarpRate,
depth: value.wtWarpDepth,
shape: value.wtWarpShape,
skew: value.wtWarpSkew,
dcoffset: value.wtWarpDCOffset ?? 0,
});
warpLFO.connect(warpParam);
}
const vibratoOscillator = getVibratoOscillator(source.detune, value, t);
const envGain = ac.createGain();
const node = source.connect(envGain);
@ -271,6 +304,8 @@ async function onTriggerSynth(t, value, onended, tables, frameLen) {
destroyAudioWorkletNode(source);
vibratoOscillator?.stop();
node.disconnect();
warpLFO.disconnect();
posLFO.disconnect();
onended();
},
t,