GainNode.gain

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.

GainNode 介面的 gain 屬性是 a-rate AudioParam,代表增益的數值。

語法

js
var audioCtx = new AudioContext();
var gainNode = audioCtx.createGain();
gainNode.gain.value = 0.5;

傳回值

一個 AudioParam.

備註: 雖然傳回的 AudioParam 是唯讀的,但是它所代表的值可以更改。

範例

See BaseAudioContext.createGain() for example code showing how to use an AudioContext to create a GainNode, which is then used to mute and unmute the audio by changing the gain property value.

規格

Specification
Web Audio API
# dom-gainnode-gain

瀏覽器相容度

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
gain

Legend

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Full support
Full support

參見