DelayNode.delayTime

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delayTime 特性为 DelayNode interface is an a-rate AudioParam representing the amount of delay to apply.

delayTime is expressed in seconds, its minimal value is 0 , and its maximum value is defined by the maxDelayTime argument of the AudioContext.createDelay() method that created it.

句法

var audioCtx = new AudioContext();
var myDelay = audioCtx.createDelay(5.0);
myDelay.delayTime.value = 3.0;

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

值

AudioParam .

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 'delayTime' 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
`delayTime`	Chrome 14	Edge 12	Firefox 25	IE 不支持 No	Opera 15	Safari 6	WebView Android Yes	Chrome Android 18	Firefox Android 26	Opera Android 14	Safari iOS Yes	Samsung Internet Android 1.0

图例

完整支持
不支持

另请参阅

使用 Web 音频 API

元数据

最后修改： 2019 年 3 月 23 日

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句法

值

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图例

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