Google now is great, and I depend on it every day. Despite the voice search feature being mostly accurate, there are times where it picks up background audio or random conversations and makes a search for you.
Something I recently discovered is all these audio clips are logged to your Google Activity Dashboard and you can play them back anytime! The best audio clips are the ones where it randomly picks up on-going conversations.
Check out your audio history here https://history.google.com/history/audio?hl=en
My first audio clip dates back to 2014!
Am I going to turn this off? Nah. It doesn’t bother me, and it helps make Google Voice search better. I also think there is a setting in the past where I’ve explicitly turned Audio History on?
Most of the searches are stuff I’ve spoken into the mic. It’s just the false positives ones that make for some good hearing.