AudioBufferSourceNode.detune

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detune 特性为 AudioBufferSourceNode 接口是 k-rate AudioParam representing detuning of oscillation in cents .

For example, values of +100 and -100 detune the source up or down by one semitone, while +1200 and -1200 detune it up or down by one octave.

句法

var source = audioCtx.createBufferSource();
source.detune.value = 100; // value in cents

注意： 虽然 AudioParam returned is read-only, the value it represents is not.

值

A k-rate AudioParam whose value indicates the detuning of oscillation in cents .

范例

const audioCtx = new AudioContext();
const channelCount = 2;
const frameCount = audioCtx.sampleRate * 2.0; // 2 seconds
const myArrayBuffer = audioCtx.createBuffer(channelCount, frameCount, audioCtx.sampleRate);
for (let channel = 0; channel < channelCount; channel++) {
  const nowBuffering = myArrayBuffer.getChannelData(channel);
  for (let i = 0; i < frameCount; i++) {
    nowBuffering[i] = Math.random() * 2 - 1;
  }
}
const source = audioCtx.createBufferSource();
source.buffer = myArrayBuffer;
source.connect(audioCtx.destination);
source.detune.value = 100; // value in cents
source.start();

规范

规范	状态	注释
Web 音频 API The definition of 'detune' 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
`detune`	Chrome 44	Edge 13	Firefox 40	IE 不支持 No	Opera 31	Safari 不支持 No	WebView Android 44	Chrome Android 44	Firefox Android 40	Opera Android 32	Safari iOS ?	Samsung Internet Android 4.0

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使用 Web 音频 API

元数据

最后修改： 2019 年 3 月 23 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