AudioBuffer.copyFromChannel()

AudioBuffer接口的copyFromChannel方法将样本从AudioBuffer的指定通道复制到目标数组中

语法

myArrayBuffer.copyFromChannel(destination,channelNumber,startInChannel);

参数

destination: 将通道数据复制到的Float32Array
channelNumber: 当前AudioBuffer的通道号，用于复制通道数据。键入channelNumber大于或等于AudioBuffer.numberOfChannels，将会抛出INDEX_SIZE_ERR 的错误
startInChannel 可选: 用于复制数据的可选偏移量。假如startInChannel比AudioBuffer.length大，将会抛出INDEX_SIZE_ERR 的错误

例子

var myArrayBuffer = audioCtx.createBuffer(2, frameCount, audioCtx.sampleRate);
var anotherArray = new Float32Array;
myArrayBuffer.copyFromChannel(anotherArray,1,0);

规范

Specification	Status	Comment
Web Audio API copyFromChannel	Working Draft

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Desktop
Mobile

Feature	Chrome	Edge	Firefox (Gecko)	Internet Explorer	Opera	Safari (WebKit)
Basic support	14.0 webkit	(Yes)	27 (27)	未实现	15 webkit 22 (unprefixed)	未实现
Unprefixed	43.0	(Yes)	?	?	?	未实现

Feature	Android	Android Webview	Edge	Firefox Mobile (Gecko)	Firefox OS	IE Phone	Opera Mobile	Safari Mobile	Chrome for Android
Basic support	未实现	?	(Yes)	27.0 (27)	1.2	未实现	未实现	未实现	28.0 webkit
Unprefixed	未实现	未实现	(Yes)	?	?	?	?	未实现	43.0

语法

参数

例子

规范

浏览器兼容性

See also