Audio Camouflage

When you don't want yourself or someone to hear something, so you cover it up with another sound to drown it out.

This could be if you are playing a tv show or music single in the background to cover up the sounds of "self gratification". Other reasons to use audio camouflage are if you wanted to cover up the sound of a fart, a soda can opening, or if you have a noisy neighbour. This is not to be confused with "white noise". For one, "white noise" is part of a much broader spectrum including "brown noise", "pink noise", etc. Also, the use of things such as "white noise" is mostly to concentrate your mind on one sound to fall asleep.