EVP - or electronic voice phenomena - is a mysterious event in which human-sounding
voices from an unknown source are heard on recording tape, in radio station noise and
other electronic media. Most often, EVPs have been captured on audiotape. The mysterious
voices are not heard at the time of recording; it is only when the tape is played back that
the voices are heard. Sometimes amplification and noise filtering is required to hear the
voices. Some EVP is more easily heard and understood than others. And they vary in
gender (men and women), age (women and children), tone and emotion. They usually
speak in single-words, phrases and short sentences. Sometimes they are just grunts,
groans, growling and other vocal noises. EVP has been recorded speaking in various languages. Thomas Edison is said to have pioneered the pursuit of the phenomena having recorded an evp himself.