As someone who recently acquire a Clapper... I had forgotten just how finicky it could be. Can't clap too quietly, too loudly, too slowly, or too quickly. Often takes me three or four tries! Not exactly an enjoyable experience for the person sitting next to you...
I vaguely remember a sitcom where someone had to watch a important event with friends on TV and someone else installed a clapper on said TV. Everything went well until the applause kicked in.
Yep. "That sounds like a clap from the next room" versus "that sounds like a quiet clap in this room" is not an impossible distinction to make (humans could do it most of the time), but not trivial either.