Mic not working with ReSpeaker 6

Hello. I’m trying Getting-started with ReSpeaker_6. Step1 and Step2 seems working correct. But “arecord” doesn’t work at step3. I also tested with audacity but it seems microphones aren’t recognizing any sounds. Below is the command which I’m running.

arecord -Dac108 -f S32_LE -r 16000 -c 8 a.wav

Is there anything I have to configure to record with microphones? I’m using “Raspberry pi 4 Computer Model B”.

Please ask me If you need more information. Thanks.

My mic is working properly now after I tested my mic with online mic test they suggest me to update my software to latest version and then mic issue has been solved

That’s great news! It’s always a relief when a technical issue is resolved, and it’s good to hear that updating your software was able to fix the problem with your microphone. Keeping your software up to date can often be an important step in ensuring that your equipment and devices are functioning properly, so it’s a good habit to get into.