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fix: schedule SpessaSynth noteOn by startTime via setTimeout

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Root cause: timeline play passes exactAudioTime as 4th param which
SpessaSynth interprets as enableReverh (boolean). All notes at T=0.
Fix: compute delay = startTime - ctx.currentTime, use setTimeout
to call noteOn(channel, pitch, vel) at correct future time.
Never pass startTime to noteOn() — SpessaSynth doesn't support it.
This commit is contained in:
3dtours
2026-07-26 20:47:15 +07:00
parent 40c531087c
commit 28be934a19
1 changed files with 12 additions and 7 deletions
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app/static/js/services/soundfontPlayer.js
+12 -7
View File
@@ -159,13 +159,18 @@
}
if (channel === undefined) channel = 0;
const durSec = durationMs / 1000;
try {
_synthInstance.noteOn(channel, midiPitch, midiVel);
setTimeout(() => { try { _synthInstance.noteOff(channel, midiPitch); } catch (e) {} }, durSec * 1000);
} catch (e) {
console.warn("[SonicSF] SpessaSynth noteOn error, oscillator fallback:", e);
this._playNoteOsc(note, velocity, durationMs, startTime, program, null, channel, synthEngine);
}
const now = ctx.currentTime;
const delay = (typeof startTime === 'number' && startTime > now) ? (startTime - now) : 0;
const doNote = () => {
try {
_synthInstance.noteOn(channel, midiPitch, midiVel);
setTimeout(() => { try { _synthInstance.noteOff(channel, midiPitch); } catch (e) {} }, durSec * 1000);
} catch (e) {
console.warn("[SonicSF] SpessaSynth noteOn error:", e);
this._playNoteOsc(note, velocity, durationMs, startTime, program, null, channel, synthEngine);
}
};
if (delay > 0) setTimeout(doNote, delay * 1000); else doNote();
},
_playNoteOsc: function (note, velocity, durationMs, startTime, program, destinationNode, channel, synthEngine) {