The ConvolverNode interface is an AudioNode that performs a Linear Convolution on a given AudioBuffer, often used to achieve a reverb effect. A ConvolverNode always has exactly one input and one output.

Note: For more information on the theory behind Linear Convolution, see the W3C Web Audio API spec section, Linear Effects Using Convolution, or read the The Wikipedia Linear Convolution Article.

Number of inputs 1
Number of outputs 1
Channel count mode "clamped-max"
Channel count 2
Channel interpretation "speakers"


Creates a new ConvolverNode object instance.


Inherits properties from its parent, AudioNode.

A mono, stereo, or 4-channel AudioBuffer containing the (possibly multichannel) impulse response used by the ConvolverNode to create the reverb effect.
A boolean that controls whether the impulse response from the buffer will be scaled by an equal-power normalization when the buffer attribute is set, or not.


No specific method; inherits methods from its parent, AudioNode.



Specification Status Comment
Web Audio API
The definition of 'ConvolverNode' in that specification.
Working Draft  

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support14 Yes25 No156
ConvolverNode() constructor55 ?53 No42 ?
buffer14 Yes25 No156
normalize14 Yes25 No156
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic support1414 Yes26 No15 ?
ConvolverNode() constructor5555 ?53 No42 ?
buffer1414 Yes26 No15 ?
normalize1414 Yes26 No15 ?

See also

Document Tags and Contributors

 Last updated by: fscholz,