However, recently a new problem has started. We're guessing it was about two weeks ago, three max, when the yelling started. Yes, yelling.
By the sounds of his voice (we have yet to see him) a middle aged man (forties?) almost constantly yells VERY LOUDLY. It sounds like he's sneezing really loud, but then ends it with a "hahahaha" on the end of it. We think he's probably mentally handicapped by the sound of it. (Just the way his voice sounds. It's not an angry yell or anything like that, just a consistent one.)
He yells the most often in the morning (6-7am through just before lunch, at least ten times an hour...usually more) and late at night (starting around 9 pm through about midnight, again, quite a few times an hour). He does it throughout the day as well, but not as consistently. It's the worst at night.
I think he lives in the building next to us since it's loud enough to hear even with the windows closed, but not like it's coming above us or something (we live on the first floor). But sometimes he wanders around and does it (we can tell because it gets louder or quieter depending on how close he is to our building).
When we moved in, the woman in the office said that if there were ever any noise problems we should write an anonymous note saying who is making what kind of noise on what days/times and turn it in. But we don't know who it is or even where he lives exactly.
What would you all recommend we do? We've been trying to ignore it, but I think it's getting worse. It's especially bothersome when we're trying to sleep!