OscillatorNode.detune
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2021.
OscillatorNode
的 detune 属性的接口
是 a-rate AudioParam
,代表振荡频率的失谐量(cents)。
语法
js
var oscillator = audioCtx.createOscillator();
oscillator.detune.value = 100; // value in cents
备注:虽然返回的 AudioParam
是只读的,但是它表示的值不是。
值
一个 a-rate AudioParam
的值
示例
下面的例子使用 AudioContext
创建了一个 oscillator node。这是已经在运行的例子,查看 Violent Theremin demo (see app.js 是相关源码)。
js
// create web audio api context
var audioCtx = new (window.AudioContext || window.webkitAudioContext)();
// create Oscillator node
var oscillator = audioCtx.createOscillator();
oscillator.type = "square";
oscillator.frequency.value = 440; // value in hertz
oscillator.detune.value = 100; // value in cents
oscillator.start();
规范
Specification |
---|
Web Audio API # dom-oscillatornode-detune |
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