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+---
+title: AudioContext.sampleRate
+slug: Web/API/AudioContext/sampleRate
+translation_of: Web/API/BaseAudioContext/sampleRate
+---
+<p>{{ APIRef("Web Audio API") }}</p>
+
+<div>
+<p>{{ domxref("AudioContext") }}的<code>sampleRate属性</code>返回一个浮点数表示采样率（每秒采样数）， 同一个AudioContext中的所有节点采样率相同，所以不支持采样率转换。</p>
+</div>
+
+<h2 id="语法">语法</h2>
+
+<pre class="brush: js">var audioCtx = new AudioContext();
+var mySampleRate = audioCtx.sampleRate;</pre>
+
+<h3 id="返回值">返回值</h3>
+
+<p>A floating point number.</p>
+
+<h2 id="例子">例子</h2>
+
+<div class="note">
+<p><strong>注意：</strong>想要完整的Web Audio实例，可以查看<a href="https://github.com/mdn/" style="font-style: italic; background-color: rgba(231, 228, 157, 0.247059);">MDN Github repo</a>上的Web Audio Demo，比如<a href="https://github.com/mdn/panner-node">panner-node</a>。不妨试试在浏览器控制台输入<code>audioCtx.sampleRate</code></p>
+</div>
+
+<pre class="brush: js;highlight[8]">var AudioContext = window.AudioContext || window.webkitAudioContext;
+var audioCtx = new AudioContext();
+// Older webkit/blink browsers require a prefix
+
+...
+
+console.log(audioCtx.sampleRate);
+</pre>
+
+<h2 id="规范">规范</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', '#widl-AudioContext-sampleRate', 'sampleRate')}}</td>
+   <td>{{Spec2('Web Audio API')}}</td>
+   <td> </td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</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>{{CompatChrome(10.0)}}{{property_prefix("webkit")}}</td>
+   <td>{{CompatGeckoDesktop(25.0)}} </td>
+   <td>{{CompatNo}}</td>
+   <td>15.0{{property_prefix("webkit")}}<br>
+    22 (unprefixed)</td>
+   <td>6.0{{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>Firefox Mobile (Gecko)</th>
+   <th>Firefox OS</th>
+   <th>IE Mobile</th>
+   <th>Opera Mobile</th>
+   <th>Safari Mobile</th>
+   <th>Chrome for Android</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{CompatUnknown}}</td>
+   <td>26.0</td>
+   <td>1.2</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>33.0</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<h2 id="另见">另见</h2>
+
+<ul>
+ <li><a href="/en-US/docs/Web_Audio_API/Using_Web_Audio_API">Using the Web Audio API</a></li>
+</ul>