frosted flakes mentioned pink noise; i recommend brown and/or grey noise. it really depends on the type of noise you're trying to counter, but these really hel

frosted flakes mentioned pink noise; i recommend brown and/or grey noise. it really depends on the type of noise you're trying to counter, but these really helped me a lot with various types of road noise and lawnmower-style noise. pink, to my ears, is a bit thin/tinny, and doesn't assist much with my trigger points.