Electronic voice phenomena, EVP for short, are sections of static noise on electronic media recordings that are believed, by paranormal investigators, to be the voices of ghosts or spirits.
Various paranormal investigators say that EVP could be due to psychic echoes from the past, psychokinesis unconsciously produced by living people, and the thoughts of aliens. According to parapsychologist Konstantin Raudive, who popularized the idea, EVP are typically brief, usually the length of a word or short phrase.
Skeptics of the paranormal attribute the voice-like aspect of the sounds to apophenia (finding of significance or connections between insignificant or unrelated phenomena), auditory pareidolia (interpreting random sounds into voices in their own language which might otherwise sound like random noise to a foreign speaker), artifacts due to low-quality equipment, and simple hoaxes. Likewise some reported EVP can be attributed to radio interference or other well-documented phenomena.
References to EVP have appeared in the reality television shows Paranormal State, Celebrity Paranormal Project, and Ghost Hunters, the fictional television series Supernatural and Medium, and Hollywood films such as White Noise and The Sixth Sense.
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