[FAQ]Curl.Dave asked about ReSpeaker 4-Mic Array for Raspberry Pi

I have a 4-mic board that has been working well for many months until recently. It no longer recognizes"OK Google"accurately. I have to repeat it and get closer or say it louder. I swapped that board with another 4-mic board and it works fine. Do these boards degrade over time? Is there a way I can debug the problem?


https://www.seeedstudio.com/ReSpeaker-4-Mic-Array-for-Raspberry-Pi-p-2941.html