BaseAudioContext.createDelay()

在此页

句法
范例
规范
浏览器兼容性
另请参阅
相关话题

createDelay() 方法在 BaseAudioContext Interface is used to create a DelayNode , which is used to delay the incoming audio signal by a certain amount of time.

句法

var delayNode = audioCtx.createDelay(maxDelayTime);

参数

maxDelayTime 可选

A DelayNode 。默认 DelayNode.delayTime is 0 seconds.

范例

We have created a simple example that allows you to play three different samples on a constant loop — see create-delay (you can also view the source code ). If you just press the play buttons, the loops will start immediately; if you slide the sliders up to the right, then press the play buttons, a delay will be introduced, so the looping sounds don't start playing for a short amount of time.

var AudioContext = window.AudioContext || window.webkitAudioContext;
var audioCtx = new AudioContext();
var synthDelay = audioCtx.createDelay(5.0);
  ...
var synthSource;
playSynth.onclick = function() {
  synthSource = audioCtx.createBufferSource();
  synthSource.buffer = buffers[2];
  synthSource.loop = true;
  synthSource.start();
  synthSource.connect(synthDelay);
  synthDelay.connect(destination);
  this.setAttribute('disabled', 'disabled');
}
stopSynth.onclick = function() {
  synthSource.disconnect(synthDelay);
  synthDelay.disconnect(destination);
  synthSource.stop();
  playSynth.removeAttribute('disabled');
}
...
var delay1;
rangeSynth.oninput = function() {
  delay1 = rangeSynth.value;
  synthDelay.delayTime.setValueAtTime(delay1, audioCtx.currentTime);
}

规范

规范	状态	注释
Web 音频 API The definition of 'createDelay()' 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
`createDelay`	Chrome 10 Prefixed 10 Prefixed Prefixed Implemented with the vendor prefix: webkit	Edge ≤18	Firefox 53 注意事项 53 注意事项 Originally implemented on `AudioContext` in Firefox 25.	IE 不支持 No	Opera 22 22 15 Prefixed Prefixed Implemented with the vendor prefix: webkit	Safari 6 Prefixed 6 Prefixed Prefixed Implemented with the vendor prefix: webkit	WebView Android Yes	Chrome Android 33	Firefox Android 53 注意事项 53 注意事项 Originally implemented on `AudioContext` in Firefox Android 26.	Opera Android 22 22 14 Prefixed Prefixed Implemented with the vendor prefix: webkit	Safari iOS 6 Prefixed 6 Prefixed Prefixed Implemented with the vendor prefix: webkit	Samsung Internet Android 2.0

图例

完整支持
不支持

要求使用供应商前缀或不同名称。

另请参阅

使用 Web 音频 API

元数据

最后修改： 2019 年 3 月 23 日

在此页

句法

参数

返回

范例

规范

浏览器兼容性

图例

另请参阅

相关话题