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+---
+title: AudioScheduledSourceNode
+slug: Web/API/AudioScheduledSourceNode
+tags:
+  - API
+  - Audio
+  - AudioScheduledSourceNode
+  - Interface
+  - Media
+  - NeedsTranslation
+  - Reference
+  - TopicStub
+  - Web Audio API
+  - sound
+translation_of: Web/API/AudioScheduledSourceNode
+---
+<div>{{APIRef("Web Audio API")}}</div>
+
+<p><code>AudioScheduledSourceNode</code> 接口作为web音频API的一部分，是几种具有在特定时刻开始与停止能力的音频源节点接口的父接口。更具体地来说，这个接口定义了{{domxref("AudioScheduledSourceNode.start", "start()")}} 和{{domxref("AudioScheduledSourceNode.stop", "stop()")}} 方法，以及{{domxref("AudioScheduledSourceNode.onended", "onended")}}事件</p>
+
+
+
+<div class="note">
+<p>你不能直接创建<code>AudioScheduledSourceNode</code>。而是应该使用继承于它的子接口，如{{domxref("AudioBufferSourceNode")}}, {{domxref("OscillatorNode")}}和{{domxref("ConstantSourceNode")}}.</p>
+</div>
+
+<p>除非另有说明，基于<code>AudioScheduledSourceNode</code>节点的输出在没有播放时处于静默状态（这种状态在start()之前与stop()之后调用）。静默状态总是由一个全0值流组成。</p>
+
+<h2 id="Properties">Properties</h2>
+
+<p><em>Inherits properties from its parent interface, {{domxref("AudioNode")}}, and adds the following properties:</em></p>
+
+<h3 id="Event_handlers">Event handlers</h3>
+
+<dl>
+ <dt>{{domxref("AudioScheduledSourceNode.onended", "onended")}}</dt>
+ <dd>A function to be called when the {{event("ended")}} event is fired, indicating that the node has finished playing.</dd>
+</dl>
+
+<h2 id="Methods">Methods</h2>
+
+<p><em>Inherits methods from its parent interface, {{domxref("AudioNode")}}, and adds the following methods:</em></p>
+
+<dl>
+ <dt>{{domxref("AudioScheduledSourceNode.start", "start()")}}</dt>
+ <dd>Schedules the node to begin playing the constant sound at the specified time. If no time is specified, the node begins playing immediately.</dd>
+ <dt>{{domxref("AudioScheduledSourceNode.stop", "stop()")}}</dt>
+ <dd>Schedules the node to stop playing at the specified time. If no time is specified, the node stops playing at once.</dd>
+</dl>
+
+<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', '#idl-def-AudioScheduledSourceNode', 'AudioScheduledSourceNode')}}</td>
+   <td>{{Spec2('Web Audio API')}}</td>
+   <td></td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility">Browser compatibility</h2>
+
+<div>
+
+
+<p>{{Compat("api.AudioScheduledSourceNode")}}</p>
+</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>
+ <li>{{domxref("AudioNode")}}</li>
+</ul>