The AnalyserNode
constructor of the Web Audio API creates a new AnalyserNode
object instance.
Syntax
var analyserNode = new AnalyserNode(context); var analyserNode = new AnalyserNode(context, options);
Parameters
Inherits parameters from the AudioNodeOptions
dictionary.
- context
- A reference to an
AudioContext
orOfflineAudioContext
. - 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
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | 55 | ? | 53 | No | 42 | ? |
Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
---|---|---|---|---|---|---|---|
Basic support | 55 | 55 | ? | 53 | No | 42 | ? |
See also
BaseAudioContext.createAnalyser()
, the equivalent factory method