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```## 显示可供使用的声卡
arecord -l**** List of CAPTURE Hardware Devices ****XDG_RUNTIME_DIR (/run/user/1000) is not owned by us (uid 0), but by uid 1000! (This could e.g. happen if you try to connect to a non-root PulseAudio as a root user, over the native protocol. Don't do that.)card 0: rockchipes8388 [rockchip-es8388], device 0: dailink-multicodecs ES8323 HiFi-0 [dailink-multicodecs ES8323 HiFi-0] Subdevices: 1/1 Subdevice #0: subdevice #0card 1: rockchiphdmiin [rockchip,hdmiin], device 0: fddf8000.i2s-dummy_codec hdmiin-dc-0 [fddf8000.i2s-dummy_codec hdmiin-dc-0] Subdevices: 1/1 Subdevice #0: subdevice #0
DC对应的声卡是 card 0: rockchipes8388 [rockchip-es8388]
## 录音指令
arecord -Dhw:0,0 -d 10 -f S24_LE -r 48000 -c 2 -t wav test.wav
```
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