The White Noise

The title 'White Noise' refers to the phenomenon known as Electronic Voice Phenomena (EVP). People believe that you can hear voices of the dead in the white noise of a detuned radio and even see faces from the white noise on the television set........................................................................................................------------------------------------------------
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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 centre frequency, having a given bandwidth. White noise is considered analogous to white light which contains all frequencies.