Electronic Voice Phenomenon (EVP)

Electronic Voice Phenomenon (EVP) arose in the 20th century as Spiritualist and parapsychological investigators began using contemporary sound-recording technology to seek evidence of communication with the dead. Early figures associated with the development of EVP research include Attila von Szalay and Raymond Bayless (mid-1950s publication of early claimed messages), Friedrich Jürgenson (who reported recordings of bird-song that included voice-like fragments), and Konstantīns Raudive (who popularized systematic collection and analysis of brief voice-like segments and published on the subject in the 1960s). Proponents framed EVP as a technological continuation of séance-era practices: the recording apparatus becomes the medium through which discarnate persons leave audible traces. Skeptical and scientific responses treat EVP as arising from ordinary causes—equipment noise, radio interference, hoaxing, and cognitive tendencies (auditory pareidolia and apophenia)—and emphasize methodological controls and replication as the appropriate response to extraordinary claims.

EVP are reported aurally rather than visually: brief segments of voice-like sound, typically the length of a word or short phrase, often embedded within background noise or static and sometimes perceived as clearer on playback than during the original recording. Early investigator transcriptions cited in practitioner literature include short utterances such as "This is G!", "Hot dog, Art!", and "Merry Christmas and Happy New Year to you all" (von Szalay/Bayless examples). Sources emphasize variability: EVP may be fragmentary, indistinct, or intermittently audible, and their apparent clarity depends heavily on listener interpretation and playback conditions.

Ascribed abilities vary by worldview. Parapsychologists and EVP enthusiasts often treat recordings as communications from discarnate persons and, in some accounts, as permitting interactive contact when used with specially designed devices (for example, the Spiricom device constructed by William O'Neil and demonstrated by George Meek, which proponents claimed enabled two-way conversation). Practitioner methods have included controlled laboratory setups intended to preclude ordinary explanations. Scientific and skeptical sources explain EVP without agency: as artifacts of recording technology, radio interference, hoaxing, and psychological phenomena (auditory pareidolia, apophenia). Claims of interactive two-way communication (e.g., Spiricom) are noted in the sources as contested and not replicated by independent researchers.