AudioBufferSourceNode.AudioBufferSourceNode()

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AudioBufferSourceNode() 构造函数创建新 AudioBufferSourceNode 对象实例。

var audioBufferSourceNode = new AudioBufferSourceNode(context, options)

Inherits parameters from the AudioNodeOptions dictionary .

context

A reference to an


									AudioContext

选项可选

Options are as follows:

buffer : An instance of AudioBuffer to be played.
detune : A value in cents to modulate the speed of audio stream rendering. Its nominal range is (-∞ to +∞). The default is 0 .
loop : A boolean indicating whether the audio should play in a loop. The default is false . If the loop is dynamically modified during playback, the new value will take effect on the next processing block of audio.
loopEnd : An optional value, in seconds, where looping should end if the loop attribute is true 。默认为 0 . Its value is exclusive to the content of the loop. The sample frames, comprising the loop, run from the values loopStart to loopEnd -(1/ sampleRate ). It's sensible to set this to a value between 0 and the duration of the buffer. If loopEnd is less than 0, looping will end at 0. If loopEnd is greater than the duration of the buffer, looping will end at the end of the buffer. This attribute is converted to an exact sample frame offset within the buffer, by multiplying by the buffer's sample rate and rounding to the nearest integer value. Thus, its behavior is independent of the value of the playbackRate 参数。

loopStart : An optional value in seconds, where looping should begin if the loop attribute is true 。默认为 0 . It's sensible to set this to a value between 0 and the duration of the buffer. If loopStart is less than 0, looping will begin at 0. If loopStart is greater than the duration of the buffer, looping will begin at the end of the buffer. This attribute is converted to an exact sample frame offset within the buffer, by multiplying by the buffer's sample rate and rounding to the nearest integer value. Thus, its behavior is independent of the value of the playbackRate 参数。
playbackRate : The speed at which to render the audio stream. Its default value is 1 . This parameter is k-rate. This is a compound parameter with detune. Its nominal range is (-∞ to +∞).

规范	状态	注释
Web 音频 API The definition of 'AudioBufferSourceNode()' in that specification.	工作草案	初始定义。

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
`AudioBufferSourceNode()` 构造函数	Chrome 55 注意事项 55 注意事项 Before version 59, the default values were not supported.	Edge ≤79	Firefox 53	IE 不支持 No	Opera 42	Safari ?	WebView Android 55 注意事项 55 注意事项 Before version 59, the default values were not supported.	Chrome Android 55	Firefox Android 53	Opera Android 42	Safari iOS ?	Samsung Internet Android 6.0 注意事项 6.0 注意事项 Before Samsung Internet 7.0, the default values were not supported.