AnalyserNode.AnalyserNode()

The AnalyserNode constructor of the Web Audio API creates a new AnalyserNode object instance.

Syntax

var analyserNode = new AnalyserNode(context, options);

Parameters

Inherits parameters from the AudioNodeOptions dictionary.

context
A reference to an AudioContext or OfflineAudioContext.
options Optional
Options are as follows:
  • fftSize: The desired initial size of the FFT for frequency-domain analysis. The default is 2048.
  • maxDecibels: The desired initial maximum power in dB for FFT analysis. The default is -30.
  • minDecibels: The desired initial minimum power in dB for FFT analysis. The default is -100.
  • smoothingTimeConstant: The desired initial smoothing constant for the FFT analysis. The default is 0.8.

Return value

A new AnalyserNode object instance.

Specifications

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

Browser Compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic supportChrome Full support 55Edge ? Firefox Full support 53IE No support NoOpera Full support 42Safari ? WebView Android Full support 55Chrome Android Full support 55Edge Mobile ? Firefox Android Full support 53Opera Android Full support 42Safari iOS ? Samsung Internet Android Full support 6.0

Legend

Full support  
Full support
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No support
Compatibility unknown  
Compatibility unknown

See also

Document Tags and Contributors

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