index.html

---
title: AudioParam.defaultValue
slug: Web/API/AudioParam/defaultValue
tags:
  - API
  - AudioParam
  - Property
  - Reference
  - Web Audio API
  - defaultValue
browser-compat: api.AudioParam.defaultValue
---
<p>{{APIRef("Web Audio API")}}</p>

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

<h2 id="Syntax">Syntax</h2>

<pre
  class="brush: js">var <em>defaultVal</em> = <em>audioParam</em>.defaultValue;</pre>

<h3 id="Value">Value</h3>

<p>A floating-point {{jsxref("Number")}}.</p>

<h2 id="Example">Example</h2>

<pre class="brush: 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
</pre>

<h2 id="Specifications">Specifications</h2>

{{Specifications}}

<h2 id="Browser_compatibility">Browser compatibility</h2>

<p>{{Compat}}</p>

<h2 id="See_also">See also</h2>

<ul>
  <li><a href="/en-US/docs/Web/API/Web_Audio_API/Using_Web_Audio_API">Using the Web Audio API</a>
  </li>
</ul>