White noise is a random signal (or process) with a flat power spectral density. In other words, the signal contains equal power within a fixed bandwidth at any center frequency. White noise draws its name from white light in which the power spectral density of the light is distributed over the visible band in such a way that the eye’s three color receptors (cones) are approximately equally stimulated.
Electronic voice phenomena is one of the most fascinating areas of paranormal research. Human-sounding voices of unknown origin are recorded on electronic media such as tape recorders, digital voice recorders, video recorders,etc. The voices are not heard at the time of the recording; it is only when the recording is played back (more…)