I own a nice townhome in Alhambra CA. You'd think I wouldn't be able to hear my neighbors. And most of the time I don't, however, I DO hear my neighbor snoring, actually roaring at night. I have to keep my TV on all night to drown him out, and I like quiet. How can I soundproof my wall. Obviously the insolation doesn't work. Is calling an acoustics expert the only solution? I appreciate any suggestions.