that is a truly good site to go and listen to them at. i wanted to also throw in a history of the origins of E.V.P. i hope ya dont mind :)
According to paranormal researchers, electronic voice phenomena (EVP) are speech or speech-like sounds, which are said to be inaudible during recording but detected on electronic recording media upon playback. They are typically brief, usually the length of a word or short phrase and are sometimes claimed to be in direct response to the questions of researchers. EVP has been said to be found on diverse media, including: radio, hamradio, television, tape recorders and videorecorders. The term was coined by publishing company Colin Smythe Ltd in the early 1970s. Previously the term “Raudive Voices” was used, after Dr. Konstantin Raudive, an early researcher. References to EVP have appeared in the reality television show Ghost Hunters, the fictional Supernatural and the Hollywood films White Noise and The Sixth Sense as well as literature including the novels Legion and Pattern Recognition. EVP are a subset of the paranormal field of instrumental transcommunication.
EVP has been studied by paranormal researchers since the 1950s, who have concluded that the most likely explanation is that they are produced by the spirits of the deceased. In 1959, Attila Von Szalay first claimed to have recorded the 'voices of the dead', which lead to the experiments of Friedrich Jurgenson. The 1970s brought increased interest and research including the work of Konstantine Raudive. In 1980, William O'Neill backed by industrialist George Meek built a 'Spiricom' device which was said to facilitate very clear communication between this world and the spirit world. Today, some paranormal researchers including Sarah Estep and Alexander McRae continue to investigate the subject. In addition to spirits, paranormal researchers have claimed that EVP could be due to: psychic echoes from the past, psychokinesis unconsciously produced by living people, or the thoughts of aliens or nature spirits. Paranormal investigators have used EVP in various ways including, as a tool in an attempt to contact the souls of dead loved ones and in Ghost hunting. Organizations dedicated to investigating EVP include the American Association of Electronic Voice Phenomena, the International Ghost Hunters Society, as well as the skeptical Rorschach Audio project.
Critics of the concept contend that the sounds heard are due to non-paranormal phenomena such as fraud, misidentification or lack of quality of equipment. They explain that the human brain is naturally evolved to interpret familiar patterns from sound and that this phenomena accounts for many instances of apparent 'voices' or 'voice-like' sounds. The condition known as Auditory pareidolia (or Rorschach Audio) is said by critics to cause humans to interpret random sounds into voices in their own language which might otherwise sound like random noise to a foreign speaker. Sound engineers who use equipment at a much higher quality than that which is used by many EVP researchers have stated that they have never heard voices after years of listening to tape and hard disk recordings and that the low quality of the equipment used can account for many of the apparent voices. Critics have also concluded that some casese are apophenia (finding of significance or connections between insignificant or unrelated phenomena), misidentification, or hoaxes.
http://en.wikipedia.org/wiki/Electronic_Voice_Phenomenon
