Electronic Voice Phenomenon (EVP)
EVPs are recordings of disembodied voices or other sounds that are captured on a tape or digital recorder, which
are caused by an unexplainable source. They are usually below the human vocalization range and fall outside of
the frequency range of 20-20,000 hertz.
EVPs are rated according to the clarity since they greatly vary. Some are easier to hear than others and can be
in the form of single-words, phrases, and short sentences out of context to a conversation taking place, or in
response to questions being asked. Often they are just random noises such as sighs, groans, laughs, or growling.
CLASS A EVP - can be heard clearly and is easy to decipher. They are usually words or phrases leaving little
dispute over what is being said.
CLASS B EVP - content is a little harder to distinguish initially.
CLASS C EVP - requires the need for amplification and filtering, thereby leaving the EVP up for debate.
Huntsville Depot - Submitted by: Mike R.
Child answering "No"
Voice answering "No"
Child answering "No"
A heavy sigh
Male answering "No"