Electronic voice phenomenon (EVP)
Electronic Voice Phenomena (EVP) or Instrumental Transcommunication refers to types of electronically transmitted or recorded sound that resemble a voice where none would normally be expected, particularly including voices heard in radio noise, white noise, or background noise. The phenomenon is of interest to many Spiritualists and other researchers who believe it may be evidence of survival beyond death and a means of communication with the spirits.
- Raudive, Konstantīns (1971), Breakthrough: An Amazing Experiment in Electronic Communication with the Dead, http://amzn.to/19rbbWb
- Vilencia, Jeff (1988), Echoes from Eternity: Learn How to Record Voices from Spirit Dimensions, New York: Global Communications, http://amzn.to/1a2EhxV
- Wolverton, Mike; Wolverton, Ruth (1982), How to Build a Lie Detector, Brain Wave Monitor and Other Secret Parapsychological Electronics Projects, TAB Books, http://amzn.to/16pZHjZ — includes a chapter on Ghost Voices Recording
- Tesla Spirit Radio, instructables.com, http://www.instructables.com/id/Spooky-Tesla-Spirit-Radio/ — instructions for building a device similar to Tesla's own "spirit radio"