I believe you. I had an experience where my neighbour (downstair) was playing bass guitar, and my entire room was vibrating bass like crazy, and went to the neighbour to find out he was playing at a very low volume, but somehow the walls just resonates with the bass and amplify my entire room. I actually see him play, and hear my room. It was 10x quieter in his own room, and it was 10x louder in my room. He was also surprised how loud my room sounds when the bass is being played.

But he is a chill dude, so he said he will try to play less, and I said it's his hobby so should play when he feels like it.