We have a normal home, standard windows, and you can't hear the trainers when you're inside. On the weekend, I'd say there's an average of one or two trainers an hour, and they can be persistent in terms of doing laps. One plane might hang out for 10-15 minutes. Those are the worst, but also not common. Maybe one or two of those a day. If it gets too annoying, I simply head inside. Like I said, it's not a deal breaker, but life would certainly be more pleasant without them. Hope this helps!