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start audio param transition at now

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Explicitly start the param transitions at the audio context's now time.
This commit is contained in:
Michael "Z" Goddard 2018-06-11 15:20:48 -04:00
parent f6d5353e83
commit 0059ff53e1
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GPG key ID: 762CD40DD5349872
2 changed files with 15 additions and 3 deletions
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12
src/effects/PanEffect.js
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@ -58,8 +58,16 @@ class PanEffect extends Effect {
const leftVal = Math.cos(p * Math.PI / 2); const leftVal = Math.cos(p * Math.PI / 2);
const rightVal = Math.sin(p * Math.PI / 2); const rightVal = Math.sin(p * Math.PI / 2);
this.leftGain.gain.setTargetAtTime(leftVal, 0, this.audioEngine.DECAY_TIME); this.leftGain.gain.setTargetAtTime(
this.rightGain.gain.setTargetAtTime(rightVal, 0, this.audioEngine.DECAY_TIME); leftVal,
this.audioEngine.audioContext.currentTime,
this.audioEngine.DECAY_TIME
);
this.rightGain.gain.setTargetAtTime(
rightVal,
this.audioEngine.audioContext.currentTime,
this.audioEngine.DECAY_TIME
);
} }
/** /**

6
src/effects/VolumeEffect.js
View file

@ -34,7 +34,11 @@ class VolumeEffect extends Effect {
this.value = value; this.value = value;
// A gain of 1 is normal. Scale down scratch's volume value. Apply the // A gain of 1 is normal. Scale down scratch's volume value. Apply the
// change over a tiny period of time. // change over a tiny period of time.
this.outputNode.gain.setTargetAtTime(value / 100, 0, this.audioEngine.DECAY_TIME); this.outputNode.gain.setTargetAtTime(
value / 100,
this.audioEngine.audioContext.currentTime,
this.audioEngine.DECAY_TIME
);
} }
/** /**