AudioBufferSourceNode.buffer

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buffer 特性为 AudioBufferSourceNode interface provides the ability to play back audio using an AudioBuffer as the source of the sound data.

若 buffer property is set to the value null , the node generates a single channel containing silence (that is, every sample is 0).

句法

AudioBufferSourceNode.buffer = soundBuffer;

值

AudioBuffer which contains the data representing the sound which the node will play.

范例

For a full working example, see this code running live ，或 view the source .

var myArrayBuffer = audioCtx.createBuffer(2, frameCount, audioCtx.sampleRate);
button.onclick = function() {
  // Fill the buffer with white noise;
  //just random values between -1.0 and 1.0
  for (var channel = 0; channel < channels; channel++) {
   // This gives us the actual ArrayBuffer that contains the data
   var nowBuffering = myArrayBuffer.getChannelData(channel);
   for (var i = 0; i < frameCount; i++) {
     // Math.random() is in [0; 1.0]
     // audio needs to be in [-1.0; 1.0]
     nowBuffering[i] = Math.random() * 2 - 1;
   }
  }
  // Get an AudioBufferSourceNode.
  // This is the AudioNode to use when we want to play an AudioBuffer
  var source = audioCtx.createBufferSource();
  // set the buffer in the AudioBufferSourceNode
  source.buffer = myArrayBuffer;

规范

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

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
`buffer`	Chrome 14	Edge 12	Firefox 25 注意事项 25 注意事项 Firefox currently handles the value `null` incorrectly. Instead of producing a node that generates a single channel of silence, the node becomes unusable and will be ignored if you attempt to connect it to anything.	IE 不支持 No	Opera 15	Safari 6	WebView Android Yes	Chrome Android 18	Firefox Android 26 注意事项 26 注意事项 Firefox currently handles the value `null` incorrectly. Instead of producing a node that generates a single channel of silence, the node becomes unusable and will be ignored if you attempt to connect it to anything.	Opera Android 14	Safari iOS Yes	Samsung Internet Android 1.0

图例

完整支持
不支持

另请参阅

元数据

最后修改： 2020 年 1 月 22 日

Web 音频 API
AudioBufferSourceNode
构造函数
1. AudioBufferSourceNode()
特性
1. buffer
2. detune
3. loop
4. loopEnd
5. loopStart
6. playbackRate
方法
1. start()
继承：
Related pages for Web Audio API

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句法

值

范例

规范

浏览器兼容性

图例

另请参阅

相关话题