EVP (Electronic Voice Phenomena)

EVP recordings are among the most compelling and widely studied evidence in paranormal research. Investigators use digital voice recorders in allegedly haunted locations, asking questions and leaving silent pauses for potential responses. Upon playback, voices — sometimes clear words or phrases, sometimes whispers or fragments — may be discovered that were not heard during the recording session. EVPs are classified by quality: Class A recordings are clear and intelligible without headphones or enhancement, Class B require some interpretation but most listeners agree on the content, and Class C are faint and disputed, requiring significant amplification and open to subjective interpretation. Skeptical explanations include auditory pareidolia (the brain interpreting random noise as meaningful patterns), radio frequency interference, equipment artifacts, and environmental sounds misidentified as voices. However, some EVPs contain contextually relevant responses to specific questions asked during the session — a detail harder to explain through random noise.

The first reported EVPs were recorded by Swedish painter and filmmaker Friedrich Jürgenson on 12 June 1959 in Mölnbo, Sweden, while taping bird songs; on playback he heard what he identified as his deceased mother's voice. He documented the experiments in *Rösterna från Rymden* (*Voices from Space*, 1964). Latvian psychologist Konstantīns Raudive, working with Jürgenson, published *Unhörbares wird hörbar* in German in 1968, translated into English as *Breakthrough: An Amazing Experiment in Electronic Communication with the Dead* (1971), containing analyses of over 100,000 recordings. The American Association of Electronic Voice Phenomena was founded by Sarah Estep in 1982. Skeptical investigation includes James Alcock's 2003 *Skeptical Inquirer* analysis attributing most EVPs to auditory pareidolia, and Imants Barušs's University of Western Ontario controlled experiments (2001) which failed to replicate Raudive-style results under blinded conditions.

Use a quality digital voice recorder (not a phone) in a quiet environment. Ask clear questions with 10-15 second pauses. Record for 30-60 minutes. Review recordings with headphones in a quiet room. Don't expect dramatic results — most sessions yield nothing. Document time, location, and questions asked. Be honest about which recordings are genuinely anomalous versus ambiguous.