The attack property of the DynamicsCompressorNode interface is a k-rate AudioParam representing the amount of time, in seconds, required to reduce the gain by 10 dB. It defines how quickly the signal is adapted when its volume is increased.
The attack property's default value is 0.003 and it can be set between 0 and 1.
An AudioParam.
Note: Though the AudioParam returned is read-only, the value it represents is not.
js
const audioCtx = new AudioContext(); const compressor = audioCtx.createDynamicsCompressor(); compressor.attack.value = 0;
See BaseAudioContext.createDynamicsCompressor() for more complete example code.
| Specification |
|---|
| Web Audio API # dom-dynamicscompressornode-attack |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
attack |
19 | 12 | 25 | No | 15 | 6 | ≤37 | 25 | 25 | 14 | 6 | 1.5 |
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https://developer.mozilla.org/en-US/docs/Web/API/DynamicsCompressorNode/attack