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→Speaker interface playback audio test
<p>[[File:media/image300.png|325x184px]]</p></li>
<li><p>The speaker and earphone use the same sound card. Before using the speaker, please make sure that the earphone jack is not plugged into the earphone (if the earphone is plugged in, the audio will be played to the earphone). Then use the '''aplay''' command to play the audio file that comes with the system. If the speaker can hear the sound, it means that the hardware can be used normally.</p>
{| class="wikitable" style="width:800px;" |-|<p>orangepi@orangepi:~$ '''aplay -D hw:<span style="color:#FF0000">3</span>,0 /usr/share/sounds/alsa/audio.wav'''</p><p>Playing WAVE 'audio.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo</p>|}</li></ol>
<span id="hdmi-audio-playback-test"></span>
==== HDMI audio playback test ====