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<p>Check if the system supports audio capture. </p>
<p>This function should always be called before using the audio capture features. If it returns <code>false</code>, then any attempt to use <code><a class="el" href="classsf_1_1SoundRecorder.html" title="Abstract base class for capturing sound data.">sf::SoundRecorder</a></code> or one of its derived classes will fail.</p>
<dl class="section return"><dt>Returns</dt><dd><code>true</code> if audio capture is supported, <code>false</code> otherwi