/span></td><td>)</td>
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<span class="mlabels"><span class="mlabel protected">protected</span><span class="mlabel virtual">virtual</span></span>  </td>
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<p>Start capturing audio data. </p>
<p>This virtual function may be overridden by a derived class if something has to be done every time a new capture starts. If not, this function can be ignored; the default implementation does not