I am working on a PYNQ-Z2 v2.4 using the Audio base overlay in Jupyter Notebooks. I am trying to use the basic record function to generate a .wav file using the provided python example (in the /base/audio folder). All other functions are working fine, but I cannot get the board to read audio through the microphone I plugged in (simple earbud microphone). I have tried both the LINE IN and HP MIC ports, but I keep ending up with an empty .wav file. Are there certain microphones which are/are not compatible with the board?
Any help would be appreciated!