AudioParam: defaultValue プロパティ

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.

defaultValueAudioParam インターフェイスの読み取り専用プロパティで、 AudioParam を作成する固有の AudioNode で定義する属性の初期値を表します。

浮動小数点数 (Number) です。

js
const audioCtx = new AudioContext();
const gainNode = audioCtx.createGain();
const defaultVal = gainNode.gain.defaultValue;
console.log(defaultVal); // 1
console.log(defaultVal === gainNode.gain.value); // true

仕様書

Specification
Web Audio API
# dom-audioparam-defaultvalue

ブラウザーの互換性

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desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
defaultValue

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Full support
Full support

関連情報