Remember the movie which Michael Keaton starred in? The movie of the same title which won varying reviews and thoughts from movie critics?
Well, it was about this concept of the white noise and no, it was not purely fiction as there are some ongoing research about this topic; something that even had its roots dating in history.
Yeah, since the early days, people have resorted to communicating with the dead. They usually try to contact a medium or even shaman to get to the other side; trying to convey their message or even hearing from beyond.
Sometimes, they even involve all those mechanical and electrical devices to achieve the purpose.
Look at the history chart (timeline); there has been various attempts; and no kidding, some were even recorded.
There were those static noises or buzzings heard when they try this out; rather eerie huh?
Well, finally in the 70's, they gave this noises a name; the EVP (Electronic Voice Phenomena) - which refer to the noises/voices recorded on the tape.