Voices of The Dead: Electronic Voice Phenomenon

I have been very critical of the ghost hunting techniques used by those on popular paranormal reality television. I do not understand how electromagnetic fields help you find ghosts and I am often annoyed by how often they overreact, but some of the evidence that they have collected does intrigue me, mainly EVP evidence. EVP stands for electronic voice phenomenon, it is an event that occurs when one is using an audio recorder and the recorder picks up a sound that was not heard with the ear but for some reason, usually assumed to be paranormal reasons, showed up in the audio recording. The question is if this is not true evidence of the paranormal then what is it?