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.

A reference to an AudioContext.
options Optional
Options are as follows:
  • feedforward: A sequence of feedforward coefficients.
  • feedback: A sequence of feedback coefficients.

Return value

A new IIRFilterNode object instance.


Specification Status Comment
Web Audio API
The definition of 'IIRFilterNode()' in that specification.
Working Draft Initial definition.

Browser Compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support551 ?53 No42 ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support551551 ?5342 ?6.0

1. Before version 59, the default values were not supported.

Document Tags and Contributors

Contributors to this page: fscholz, teoli, chrisdavidmills, david_ross, jpmedley
Last updated by: fscholz,