Hi there,
It seems the driver is not installed correctly. Please uninstall the driver and install it again. If you still can not get it work, you can download the image 2018-08-06-raspbian-for-respeaker.zip with the driver installed. thanks.
<LINK_TEXT text=“https://v2.fangcloud.com/share/7395fd13 … ario=share”>https://v2.fangcloud.com/share/7395fd138a1cab496fd4792fe5?folder_id=188000207913&lang=en&preview=188002339479&scenario=share</LINK_TEXT>
</s>cd seeed-voicecard
sudo ./uninstall.sh
sudo reboot
cd seeed-voicecard
sudo ./install.sh
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