Connect the mic straight into Zoom and confirm it works then add the virtual audio in the middle, selecting it in Zoom and pipe the mic into VA - does that work? Remove the mic and play a known sound through OBS - does that work? I’ve fine this with clients many, many times to troubleshoot sound issues – it’s the only way you’ll figure out where the problem is. Try simplifying the chain, and add in one variable item at a time.Mismatched sampling rates will produce garbled sound out. It you document all of those connections, it’ll be easier to figure out what might need adjusting. It would help troubleshoot if we know the model of mic, how it’s connected (USB, mic input Jack, etc).

Make sure everything that can be configured is set the same, such as bit rate, etc. You need to follow the “audio chain” from your microphone into OBS, out of OBS into your virtual audio, into Zoom.It’s pretty difficult to diagnose something like this without being “live”, but here’s a few things to check:

Audio cable obs