The IIRFilterNode()
constructor of the Web Audio API creates a new IIRFilterNode
object which an AudioNode
processor which implements a general infinite impulse response filter.
var iIRFilterNode = new IIRFilterNode(context, options)
Inherits parameters from the AudioNodeOptions
dictionary.
AudioContext
.feedforward
: A sequence of feedforward coefficients.feedback
: A sequence of feedback coefficients.Unlike other nodes in the Web Audio API, the options passed into the IIR filter upon creation are not optional. The filter needs these values to work and with the vast range of filters available, there is no default.
A new IIRFilterNode
object instance.
let feedForward = [0.00020298, 0.0004059599, 0.00020298]; let feedBackward = [1.0126964558, -1.9991880801, 0.9873035442]; const AudioContext = window.AudioContext || window.webkitAudioContext; const audioCtx = new AudioContext(); const iirFilter = new IIRFilterNode(audioCtx, { feedforward: feedForward, feedback: feedBackward });
Specification | Status | Comment |
---|---|---|
Web Audio API The definition of 'IIRFilterNode()' in that specification. | Working Draft | Initial definition. |
Desktop | ||||||
---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
Basic support | 55
|
? | 53 | No | 42 | ? |
Mobile | |||||||
---|---|---|---|---|---|---|---|
Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
Basic support | 55
|
55
|
? | 53 | 42 | ? | 6.0 |
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/IIRFilterNode/IIRFilterNode