Because our ears are sensitive to high frequencies, white noise sounds very hissy. White noise has a spectral frequency of 1. Equal proportions of all frequencies are present.
White Noise #1 20 minute stereo MP3
White Noise #2 20 minute stereo MP3
White Noise #3 20 minute stereo MP3
White Noise 1 minute mono MP3
The first three longer 20 minute white noise files can be used to mask conversations. Each of the three are different. Try loading one or more onto your mobile phone and playing it during sensitive conversations you’d like to keep private.
White noise is sometimes used in some random number generators, as a sleep aid, or to mask tinnitus.