Revision 662493 of MediaStreamAudioSourceNode

<p>{{APIRef()}}</p>
<div>
 <p>The MediaStreamAudioSourceNode interface represents an audio source consisting of a <a href="/en-US/docs/WebRTC" title="/en-US/docs/WebRTC">WebRTC</a> {{domxref("MediaStream")}} (such as a webcam or microphone.) It is an {{domxref("AudioNode")}} that acts as an audio source.</p>
</div>
<p>A <code>MediaElementSourceNode</code> has no inputs and exactly one output, and is created using the {{domxref("AudioContext.createMediaStreamSource")}} method. The amount of channels in the output equals the number of channels in {{domxref("AudioMediaStreamTrack")}}. If there is no valid media stream, then the number of output channels will be one silent channel.</p>
<ul class="audionodebox">
 <li><dfn>Number of inputs</dfn> <code>0</code></li>
 <li><dfn>Number of outputs</dfn> <code>1</code></li>
 <li><dfn>Channel count</dfn> defined by the {{domxref("AudioMediaStreamTrack")}} passed to the {{domxref("AudioContext.createMediaStreamSource")}} method that created it.</li>
</ul>
<h2 id="Properties">Properties</h2>
<p><em>Inherits properties from its parent, </em><em>{{domxref("AudioNode")}}</em>.</p>
<h2 id="Methods">Methods</h2>
<p><em>Inherits methods from its parent, </em><em>{{domxref("AudioNode")}}</em>.</p>
<h2 id="Example">Example</h2>
<p>{{page("/en-US/docs/Web/API/AudioContext.createMediaStreamSource","Example")}}</p>
<h2 id="Specification">Specification</h2>
<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">Specification</th>
   <th scope="col">Status</th>
   <th scope="col">Comment</th>
  </tr>
  <tr>
   <td>{{SpecName('Web Audio API', '#the-mediastreamaudiosourcenode-interface', 'MediaStreamAudioSourceNode')}}</td>
   <td>{{Spec2('Web Audio API')}}</td>
   <td>&nbsp;</td>
  </tr>
 </tbody>
</table>
<h2 id="Browser_compatibility">Browser compatibility</h2>
<div>
 {{CompatibilityTable}}</div>
<div id="compat-desktop">
 <table class="compat-table">
  <tbody>
   <tr>
    <th>Feature</th>
    <th>Chrome</th>
    <th>Firefox (Gecko)</th>
    <th>Internet Explorer</th>
    <th>Opera</th>
    <th>Safari (WebKit)</th>
   </tr>
   <tr>
    <td>Basic support</td>
    <td>14 {{property_prefix("webkit")}}</td>
    <td>23</td>
    <td>{{CompatNo}}</td>
    <td>15&nbsp;{{property_prefix("webkit")}}<br />
     22 (unprefixed)</td>
    <td>6 {{property_prefix("webkit")}}</td>
   </tr>
  </tbody>
 </table>
</div>
<div id="compat-mobile">
 <table class="compat-table">
  <tbody>
   <tr>
    <th>Feature</th>
    <th>Android</th>
    <th>Chrome</th>
    <th>Firefox Mobile (Gecko)</th>
    <th>Firefox OS</th>
    <th>IE Phone</th>
    <th>Opera Mobile</th>
    <th>Safari Mobile</th>
   </tr>
   <tr>
    <td>Basic support</td>
    <td>{{CompatNo}}</td>
    <td>28&nbsp;{{property_prefix("webkit")}}</td>
    <td>25</td>
    <td>1.2</td>
    <td>{{CompatNo}}</td>
    <td>{{CompatNo}}</td>
    <td>6&nbsp;{{property_prefix("webkit")}}</td>
   </tr>
  </tbody>
 </table>
</div>
<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>