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The AnalyserNode constructor of the Web Audio API creates a new AnalyserNode object instance.
Syntax
var analyserNode = new AnalyserNode(context, options)
参数
继承参数自 AudioNodeOptions 字典.
- context
AudioContext的引用.- options 可选
- Options are as follows:
fftSize: 用于频域分析的FFT初始尺寸。默认值是2048。maxDecibels: 用于FFT分析的初始最大功率（dB）。默认值是-30。minDecibels: 用于FFT分析的初始最小功率（dB）。默认值是-100。smoothingTimeConstant: 用于FFT分析的初始平滑常数。默认值是0.8。
返回值
A new AnalyserNode object instance.
Specifications
| Specification | Status | Comment |
|---|---|---|
| Web Audio API AnalyserNode |
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.
Update compatibility data on GitHub
| Desktop | Mobile | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AnalyserNode() constructor | Chrome Full support 55 | Edge ? | Firefox Full support 53 | IE No support No | Opera Full support 42 | Safari ? | WebView Android Full support 55 | Chrome Android Full support 55 | Edge Mobile ? | Firefox Android Full support 53 | Opera Android Full support 42 | Safari iOS ? | Samsung Internet Android Full support 6.0 |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown