EVP INDEX
Electronic Voice Phenomena (EVP) is a term coined by the publishing company Colin Smythe Ltd. to describe speech or speech-like sounds they felt were of paranormal origin occuring on previously unused recording media.  The sounds were previously called "Raudive voices" by Konstanin Raudive.  Most reported examples of EVP are brief, usually lasting the length of a word or short phrase, though longer segments have also been reported.  Explanations for the perception of EVP include pareidolia or interference radio signals.  Others believe them to be paranormal and caused by psychokinesis or the voices of spirits.

EVP was not named or defined until the mid 20th century, although it is reported to have been observed in various forms since early in the century.  Attila von Szalay (Sealay), a professional medium, was among the first people to say he tape-recorded voices of the dead.  He tried various techniques during the 1930's, before joining with Raymond Bayless in the 1950's.  Together, they began by experimenting using a 78 RPM Pack Bell record cutter.  When the results failed to meet their expectations, Bayless constructed a custom-made recording rig consisting of a soundproofed clothes closet featuring a microphone inside a tinfoil covered trumpet that lead to a remote tape recorder and speaker system in order to allow the sounds inside the close to be monitered and recorded.  At times the recording closet was empty, while other times it was occupied by a volunteer.  Using this setup, Szalay and Bayless report having captured many voices on tape that were not heard through the speaker when the closet was occupied. Records of their experiment were later published in the Journal of the American Society for Psychical Research.
(Reference: Wikipedia)
ENTER
OUR
EVP
VAULT
Electronic Voice Phenomena
The alleged communication by spirits through tape recorders and other electronic devices.