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Fix sweep amplitude envelope in step sequencer #123

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Fix sweep amplitude envelope in step sequencer #123

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6dc6405
fixed envelope logic
ManuLintz Jan 25, 2024
a39ab62
Merge branch 'main' into fix-sweep-amplitude-envelope-in-step-sequencer
ManuLintz Apr 3, 2024
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5 changes: 2 additions & 3 deletions step-sequencer/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -222,7 +222,6 @@ <h2>DTMF</h2>
);

// Expose attack time & release time
const sweepLength = 2;
function playSweep(time) {
const osc = new OscillatorNode(audioCtx, {
frequency: 380,
Expand All @@ -236,12 +235,12 @@ <h2>DTMF</h2>
sweepEnv.gain.linearRampToValueAtTime(1, time + attackTime);
sweepEnv.gain.linearRampToValueAtTime(
0,
time + sweepLength - releaseTime
time + attackTime + releaseTime
);

osc.connect(sweepEnv).connect(audioCtx.destination);
osc.start(time);
osc.stop(time + sweepLength);
osc.stop(time + attackTime + releaseTime);
}

// Expose frequency & frequency modulation
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