For decades, paranormal researchers have been recording enigmatic voices on audiotape. Called electronic voice phenomena - or EVP - these strange-sounding voices have been captured using ordinary tape recorders and cassette tapes. Often these researchers venture out into cemeteries or allegedly haunted houses. Sometimes the voices seem to respond to questions asked by the researchers, but often they are unprompted. In every case, however, the voices are not heard at the time they are recorded. Oddly, it is not until later when the researchers play the tape back - often with amplification or filtering - that the voices can be distinguished.
Because white noise contains all frequencies, it is frequently used to mask other sounds. If you are in a hotel and voices from the room next-door are leaking into your room, you might turn on a fan to drown out the voices. The fan produces a good approximation of white noise. Why does that work? Why does white noise drown out voices?
Here is one way to think about it. Lets say two people are talking at the same time. Your brain can normally pick out one of the two voices and actually listen to it and understand it. If three people are talking simultaneously, your brain can probably still pick out one voice. However, if 1,000 people are talking simultaneously, there is no way that your brain can pick out one voice. It turns out that 1,000 people talking together sounds a lot like white noise. So when you turn on a fan to create white noise, you are essentially creating a source of 1,000 voices. The voice next-door makes it 1,001 voices, and your brain cant pick it out any more.
Are they ghosts? Voices from another dimension? Something else? What they are exactly is a matter of debate, but theres little denying that they are there - and completely unexplained. A number of paranormal organizations and other researchers have posted sound files of their EVPs on the web where you can easily hear them. Your browser will need RealAudio and Windows Media Player plug-ins to hear them all. You should know that EVP voices dont often sound like normal human voices. They usually have an electronic or otherworldly quality to them, and you have to listen carefully to hear the message. The White Noise is for sale to you as a download, once you have paid this will be posted usually the following day, This is genuine clear White Noise.