I left a message for my apartment manager about another neighbor, the partying shouting cursing door slamming ones, and for now things are quieter. I'm optimistic too about my bass loving neighbor, she seems to be moderating things nicely now. We've had some friendly brief conversations outside about things other than noise, might have helped.

Thanks everyone for their kind words and ideas and stories. Helps to remind me that I'm not at all the only person who has difficulty with noise.

In the past sometimes it has worked for me to move to get away from unwanted noise, but as a low income person my choices are limited. Plus I've learned there really are no guarantees. I've had friends who owned their own homes in very quiet locations discover that all it takes is a new neighbor, new construction, new dog, etc and their soundscape radically changes.