>>80368531Long reverb tail. When they walk away from their computer and are still talking or make a loud bang from a distance, you can tell by the echo length what the general size of the room they're in. There's reverb software where you can load in an impulse response and it can semi-accurately visualize a 3D space of an environment. You can also hear their footsteps how far they have to walk to get to the door, or if the place is big enough for them to run to/from the computer. Some JP managed to accurate map out his oshi's place during an ASMR stream (stereo sound) and I think she kept some 3D tracking on so you could see her pee and open/close doors.
No GFE vtuber is safe.