The knee property of the DynamicsCompressorNode interface is a k-rate AudioParam containing a decibel value representing the range above the threshold where the curve smoothly transitions to the compressed portion.
The knee property's default value is 30 and it can be set between 0 and 40.
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.knee.value = 40;
See BaseAudioContext.createDynamicsCompressor() for more complete example code.
| Specification |
|---|
| Web Audio API # dom-dynamicscompressornode-knee |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
knee |
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/knee