{{ APIRef("Web Audio API") }}
{{ domxref("AudioBufferSourceNode") }} 接口的 buffer 属性提供了重复播放音频的能力，该音频使用 {{domxref("AudioBuffer")}} 作为声音文件的来源。
如果 buffer 属性的值为 null, 节点会自动生成一个单声道的无声文件（所有采样均为0）。
AudioBufferSourceNode.buffer = soundBuffer;
{{domxref("AudioBuffer")}}，包含了节点将要播放的声音数据。
完整的示例请查看 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;
| Specification | Status | Comment |
|---|---|---|
| {{SpecName("Web Audio API", "#widl-AudioBufferSourceNode-buffer", "buffer")}} | {{Spec2("Web Audio API")}} | Initial definition |
{{Compat("api.AudioBufferSourceNode.buffer")}}
{{page("/en-US/docs/Web/API/AudioBufferSourceNode","See_also")}}