An EVP session is a planned audio-recording session in which paranormal investigators ask questions, leave quiet intervals, and review the recording for sounds they interpret as voices. EVP means electronic voice phenomena. The label describes an interpretation of a recording; it does not establish that a spirit spoke.
This guide explains the session itself, the terms you may hear, and how to document what happened without overstating the result. For the device rather than the activity, read what an EVP recorder is and what it records.
What happens during an EVP session?
A typical session has three stages: setup, a period of recording, and later review. People may call out questions during the recording, but a quiet interval is simply a chance to record the surrounding sound. It is not evidence that an answer is coming.
- Set up: choose a location you are allowed to use, test the recorder, and write down who is present and where they are standing.
- Record: announce the date, location and start time. Ask one short question at a time, then leave a consistent quiet interval.
- Document: say when someone coughs, moves a chair or touches the recorder. Note traffic, plumbing, animals and nearby conversations.
- Review: listen to the original at normal speed, compare it with the log, and record uncertain observations without guessing a transcript.
A sample session log
Use the recorder’s elapsed time as well as the local time, including the time zone. For example: “00:45 — question ends; 00:51 — footsteps in hallway; 01:05 — microphone touched.” These are example entries, not a report of a HauntGears investigation.
Record the filename, device, microphone position, recording mode and any processing. If you change rooms or settings, announce the change. A second recorder can provide a comparison, but agreement between devices still does not identify a supernatural source.
EVP sessions and spirit boxes are different
A recorder captures audio. A spirit box scans radio channels and can produce broadcast fragments; operating it during a quiet session adds another sound source. Keep radio-sweep experiments separate and label them clearly. An EMF meter measures fields within its specifications and cannot authenticate a recorded voice.
What do Class A, B and C mean?
Some hobbyists use letter grades to describe perceived clarity, with A usually referring to clearer clips and C to more ambiguous ones. Definitions vary. These are subjective listening labels, not scientific evidence grades or proof of who produced a sound. Terms such as “intelligent” or “residual” describe paranormal interpretations, not established recording mechanisms.
Why two listeners may hear different words
People can interpret ambiguous noise as speech. Research on purported EVP recordings has examined how expectations and paranormal framing affect perception. A useful safeguard is to ask another listener what they hear without supplying a proposed phrase first. Keep their independent answer, including “no words” or disagreement.
Do not repeatedly filter or slow a clip until it resembles a sentence. Audacity’s documentation explains that noise reduction can distort audio and introduce artifacts. Keep an untouched original, work on a copy, and label any processed version with its settings.
What equipment do you need?
Start with a recorder or phone you already own if it can make a clear test recording and export the original file. A dedicated recorder may offer useful controls, but “EVP” branding does not make a device a spirit detector. Check battery life, storage, microphone noise and file access before buying. Headphones and a notebook are useful for review and documentation.
Permission, privacy and physical safety
Get permission from the property owner and the people you intend to record. Confirm local access hours and recording rules for your U.S. location; rules vary. Keep a working phone, visible flashlight and a companion, and avoid unsafe structures. Do not disclose private conversations or identifying details when sharing a clip. Stop if you are uncomfortable or the site is unsafe.
What can you conclude from a session?
You can document that a particular sound occurs in a particular file. You may be able to identify an ordinary cause from the log or a comparison recording. If the source remains uncertain, “unidentified sound” is an accurate result. A recording being unexplained does not demonstrate a paranormal cause.
Sources and further reading
- Paranormal experiences, sensory-processing sensitivity, and the priming of pareidolia — research on the perception of purported EVP recordings.
- Audacity: Noise Reduction — processing limitations and artifacts.
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