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<p>Defines the Volume (in %) if volume is 0, mute is enabled,range is 0-100. </p>
<p>&lt; error_t value indicating success (no error)</p>

<p>Implements <a class="el" href="classaudio__driver_1_1_audio_driver.html#a43d1eddbaad3e8e0f25004acb9c29efc">AudioDriver</a>.</p>

</