查看“使用命令测试录音的方法”的源代码

1) 开发板上有板载 MIC，位置如下所示：<br><br>
[[Image:Pi-5-details2-pic16.png]]<br><br>
2) 运行 '''test_record.sh main''' 命令会通过板载 MIC 录制一段音频，然后播放到 HDMI 和耳机。<br>
{| class="wikitable" style="width:800px;" 
|-
|orangepi@orangepi:~$ '''test_record.sh main'''<br>
Start recording: /tmp/test.wav<br>
Recording WAVE '/tmp/test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo Start playing<br>
Playing WAVE '/tmp/test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo<br>
Playing WAVE '/tmp/test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
|}
3) 除了板载 MIC，我们还可以通过带 MIC 功能的耳机来录制音频。将带 MIC 功能的耳机插入开发板后，运行 '''test_record.sh headset''' 命令会通过耳机录制一段音频， 然后播放到 HDMI 和耳机。<br>
{| class="wikitable" style="width:800px;" 
|-
|orangepi@orangepi:~$ '''test_record.sh headset'''<br>
Start recording: /tmp/test.wav<br>
Recording WAVE '/tmp/test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo <br>
Start playing<br>
Playing WAVE '/tmp/test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo<br>
Playing WAVE '/tmp/test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
|}