使用芯片是T113 能正常播放,但是录音没有声音
![3933a9a9-5e34-44f5-b9f9-3cfed07d7f5d-image.png](/assets/uploads/files/1716963710331-3933a9a9-5e34-44f5-b9f9-3cfed07d7f5d-image.png)
这个录制的wav音频文件,基本没有波动。
硬件部分是使用的官方的麦克风电路,使用MIC3P MIC3N
alsamixer设置如下
![64391881-44d8-4d30-bd82-89425bfbd24c-image.png](/assets/uploads/files/1716963833191-64391881-44d8-4d30-bd82-89425bfbd24c-image.png)
![22030cd5-35d9-47c9-94af-d716083d2147-image.png](/assets/uploads/files/1716963864612-22030cd5-35d9-47c9-94af-d716083d2147-image.png)
![3cab20a2-2b6b-4098-a840-56c96e82a5d1-image.png](/assets/uploads/files/1716963883392-3cab20a2-2b6b-4098-a840-56c96e82a5d1-image.png)
![21142f78-68fd-41ac-8d59-b803fd88dad7-image.png](/assets/uploads/files/1716963901685-21142f78-68fd-41ac-8d59-b803fd88dad7-image.png)
![ebf44088-0a65-4cad-86d5-5cc83de97f86-image.png](/assets/uploads/files/1716963938026-ebf44088-0a65-4cad-86d5-5cc83de97f86-image.png)
录音命令:
arecord -Dhw:audiocodec -f S16_LE -r 16000 -c 1 -d 10 -vv ./in
.wav
mic3p电平:
![183282bc-1351-4296-8abf-561ff07db391-6e991cb3c66a8128e02597a9b593b89.jpg](/assets/uploads/files/1716964173100-183282bc-1351-4296-8abf-561ff07db391-6e991cb3c66a8128e02597a9b593b89.jpg)
看了几篇文章,理论上只需mic3和HpSpeaker Switch打开就能进行录音。但操作下来一直wav文件没有声音
补充:
运行结果:
![2e858189-dad1-4792-9aea-8a0b1cd79ae5-image.png](/assets/uploads/files/1716966981675-2e858189-dad1-4792-9aea-8a0b1cd79ae5-image.png)
录音设备只有一个,最下面数值在7到11波动,拔掉麦克风也是一样。