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Update README.md

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Baozhu Zuo 2017-09-27 11:18:27 +08:00 committed by GitHub
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README.md
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@ -94,6 +94,27 @@ arecord -f cd -Dhw:1 | aplay -Dhw:1
#It will capture sound on AC108 and save as a.wav
arecord -Dac108 -f S32_LE -r 16000 -c 4 a.wav
```
### uninstall seeed-voicecard
If you want to upgrade the driver , you need uninstall the driver first.
```
pi@raspberrypi:~/seeed-voicecard $ sudo ./uninstall.sh 4mic
delete dtoverlay=seeed-4mic-voicecard in /boot/config.txt
delete snd-soc-ac108 in /etc/modules
------------------------------------------------------
Please reboot your raspberry pi to apply all settings
Thank you!
------------------------------------------------------
pi@raspberrypi:~/seeed-voicecard $ sudo ./uninstall.sh 2mic
delete dtoverlay=seeed-2mic-voicecard in /boot/config.txt
remove seeed-2mic-voicecard.dtbo in /boot/overlays
remove snd-soc-wm8960.ko
delete snd-soc-wm8960 in /etc/modules
------------------------------------------------------
Please reboot your raspberry pi to apply all settings
Thank you!
------------------------------------------------------
```
### with Google Assistant
if you run the assistant but the playback is speed up considerably, try to configure alsa: