Well, last night I ended up moving to the room upstairs instead of the living room downstairs, and that room's pretty small - there was my sister, two computers (both on), and the TV. The TV's kind of old and it made an audible sort of mosquito whine you get from electronics the whole time it was on, and I ended up moving the speaker on top of the TV.
My sister was also constantly yelling at me about the game, so that might have contributed to most of the noise too.