AudioNode.channelCount

在此页

句法
范例
规范
浏览器兼容性
另请参阅
相关话题

channelCount 特性为 AudioNode interface represents an integer used to determine how many channels are used when up-mixing and down-mixing connections to any inputs to the node.

channelCount 's usage and precise definition depend on the value of AudioNode.channelCountMode :

It is ignored if the channelCountMode value is max .
It is used as a maximum value if the channelCountMode value is clamped-max .
It is used as the exact value if the channelCountMode value is explicit .

句法

var oscillator = audioCtx.createOscillator();
var channels = oscillator.channelCount;

值

An integer.

范例

var AudioContext = window.AudioContext || window.webkitAudioContext;
var audioCtx = new AudioContext();
var oscillator = audioCtx.createOscillator();
var gainNode = audioCtx.createGain();
oscillator.connect(gainNode);
gainNode.connect(audioCtx.destination);
oscillator.channelCount;

规范

规范	状态	注释
Web 音频 API The definition of 'channelCount' in that specification.	工作草案

浏览器兼容性

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. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`channelCount`	Chrome 14	Edge 12	Firefox 25	IE 不支持 No	Opera 15	Safari 6	WebView Android Yes	Chrome Android 18	Firefox Android 26	Opera Android 14	Safari iOS Yes	Samsung Internet Android 1.0

图例

完整支持
不支持

另请参阅

使用 Web 音频 API

元数据

最后修改： 2020 年 1 月 22 日

Web 音频 API
AudioNode
特性
1. channelCount
2. channelCountMode
3. channelInterpretation
4. context
5. numberOfInputs
6. numberOfOutputs
方法
1. connect()
2. disconnect()
继承：
1. EventTarget
Related pages for Web Audio API

在此页

句法

值

范例

规范

浏览器兼容性

图例

另请参阅

相关话题