I've been wanting to buy a sensor watch for a while now. I'm actually really glad I waited to back this now! I would love an SPL meter on my watch with weighti

I've been wanting to buy a sensor watch for a while now. I'm actually really glad I waited to back this now! I would love an SPL meter on my watch with weighting filters! Don't know much about piezo buzzers but I wonder if it could be used as a microphone for this purpose.