I know what you mean. It's hard to work or study around chatty people or where one can hear a radio or TV going. Having abnormally good hearing doesn't help much either.
Recordings of natural acoustic environments (rainfall, seashore) work for some people. I find classical music with slow tempos does the job for me; I sometimes break off to listen, but shortish micro-breaks are a good thing. The good thing about classical music is that there are a lot of long-form pieces, like symphonies that last an hour or opera that lasts 2 or more. Alternatively, you could go looking through the ambient electronic music genre, which tends towards ethereal and spacey sounds rather than being built around hooks, choruses, and musical climaxes. Brian Eno is a good artist to start with.