oo, my phone can now listen for stuff like smoke alarms, crying children and will start to vibrate and flash when it does. Seems like it's preinstalled on Pixels but also available in the Play store. And it's all on-device too https://support.google.com/accessibility/android/answer/10092548
@noiob to be fair, if "identifying smoke alarms" had to be online I would cry
how could they implement the highly complex task of "identifying loud fixed rate beeping" on device without the power of the cloud
this used to be a beta feature exclusive to the Pixel Buds wireless earbuds but it seems like they stabilized it for any (new enough) device