index.md

---

title: AudioParam.defaultValue
slug: Web/API/AudioParam/defaultValue
page-type: web-api-instance-property
browser-compat: api.AudioParam.defaultValue

---

{{APIRef("Web Audio API")}}

The defaultValue read-only property of the {{ domxref("AudioParam") }} interface represents the initial value of the attributes as defined by the specific {{domxref("AudioNode")}} creating the AudioParam.

Value

A floating-point {{jsxref("Number")}}.

Examples

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

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• Using the Web Audio API