White noise is a random signal (or process) with a flat power spectral density. In other words, the signal's power spectral density has equal power in any band, at any center frequency, having a given bandwidth. White noise is considered analogous to white light which contains all frequencies.

Who am I?

Neo-hippie cinephile. Follower of the great Jim Morrison who once said "If the doors of perception are cleansed, everything would appear to man as it truly is, infinite."