Solution found for Google Home Hub popping sound.

If anyone else is like me and has a Home Hub next to their nightstand, you may have noticed recently that they started making a popping noise. Since this was happening to more than one, it seemed like a software issue. Turns out this seems to be a result of the ultrasound sensing feature. If you turn that off, it should go away.

https://support.google.com/googlenest/answer/9509981?hl=en