When I saw this thread title, I immediately assumed this would refer to loud drunk people spilling into the hallway for a prolonged period of time.

There is something sub-standard about this particular hotel's degree of sound dampening insulation between guest rooms.

Meanwhile, there are phone apps that measure decibels detected at the microphone. Always good to get an objective opinion of how loud one really is. I did that with my kid who claimed he was quiet when playing a video game.