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

浏览器兼容性

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See also