In troubleshooting the issue with a second assembly I did determine that if I record with a bit depth of 24 that it will sound horrible when the wav file is copied over to my computer and played in VLC. But, it doesn’t sound anywhere near as bad when played with aplay on the Jetson Nano.
If I record with a bit depth of 32 then it’s not too bad on either system. So I’m not sure what’s going on with that.
In either case it’s not nearly as sensitive as I was hoping for.
I did order a USB Microphone with a similar Mic so when that comes in I’ll do a comparison test.
Here is a link to the zip file with different recordings. The recording starts with nothing, and then a tone generator outputs a 2khz sine wave.