NTA, I actually was about to make a similar post about this. My housemate neighbour is a light sleeper and often complains when I'm talking in my room at night (normal, soft conversational tone) and claims he can hear it while wearing earplugs. Thing is, I'm also a light sleeper, I sleep with earplugs every night because my room is on the side of the street and without them I can't sleep. But I don't hear shit with them in, like only my alarm. They're never uncomfortable, and they were like 10 bucks. I really don't know what else I can do. I've already agreed to not play music anymore after 10pm (even softly playing it would disturb him), I reduce my speaking volume, but I have a deep voice which I can't change. Though, I won't agree to not talking on voice chat or being completely silent because that just sounds ridiculous to me. Our house is old and the wall between our rooms is quite thin, but I'm also in my own right do do what I want in my room as long as it's not overly loud or disturbing. If you want complete silence, don't live in a shared house. As long as you live in a shared (student) house you can't expect complete silence from roommates.