The AnalyserNode()
constructor of the Web Audio API creates a new AnalyserNode
object instance.
The AnalyserNode()
constructor of the Web Audio API creates a new AnalyserNode
object instance.
js
new AnalyserNode(context) new AnalyserNode(context, options)
context
A reference to an AudioContext
or OfflineAudioContext
.
options
Optional
An object with the following properties, all optional:
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
.
channelCount
Represents an integer used to determine how many channels are used when up-mixing and down-mixing connections to any inputs to the node. (See AudioNode.channelCount
for more information.) Its usage and precise definition depend on the value of channelCountMode
.
channelCountMode
Represents an enumerated value describing the way channels must be matched between the node's inputs and outputs. (See AudioNode.channelCountMode
for more information including default values.)
channelInterpretation
Represents an enumerated value describing the meaning of the channels. This interpretation will define how audio up-mixing and down-mixing will happen. The possible values are "speakers"
or "discrete"
. (See AudioNode.channelCountMode
for more information including default values.)
Specification |
---|
Web Audio API # dom-analysernode-analysernode |
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
AnalyserNode |
55 | 79 | 53 | No | 42 | 14.1 | 55 | 55 | 53 | 42 | 14.5 | 6.0 |
BaseAudioContext.createAnalyser()
, the equivalent factory method
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https://developer.mozilla.org/en-US/docs/Web/API/AnalyserNode/AnalyserNode