**This is the second in a series for Ghost Hunting Theories written by Jim Kelly, the EVP specialist in our Arizona paranormal think tank group.** ( LINK to #1 ) Why can’t we hear an EVP at the same time it is captured on a recording device? The human range of hearing is usually referred to in the 20 Hertz range (Hz for short), all the way up to 20,000.00 Hz. This range can vary as well. Hertz is the unit of measurement we use on an audiogram when checking hearing. It takes physical movement to produce speech when we talk to one another. Birds, cats, dogs, and even mice have a higher level of hearing than humans do. When an EVP is captured on an audio recorder it’s never heard by the human ear until after the sound track or tape cassette is played back and reviewed by the paranormal investigator; there is a good reason for this. EVP is imprinted on audio recorders, not recorded. That’s right. Imprinted by an unknown, unexplainable process. When I increased the number of recorder usag...