I lived on a major cross town ambulance route, bet we had a couple every hour on Friday and Saturday nights. After the first week I never really heard them anymore. I now live overlooking a creek. It's thick and lush and I get wild turkeys and deer all the time, but, the other side of the creek, and I can't even see it through the woods, is the regional trauma center and the helicopters are very loud coming and going, but I almost never notice them anymore either. Earplugs, or headphones, heavy metal can drown out just about anything.