Read Chapters

1.	Introduction	Read it Now
2.	History	Read it Now
3.	History: Early Interest And Research	Read it Now
4.	History: Raudive Voices And Spiricom	Read it Now
5.	History: Modern Era (1980s-Present)	Read it Now
6.	Paranormal Explanations	Read it Now
7.	Mainstream Explanations	See below
8.	Mainstream Explanations (Continued)	Read it Now
9.	Instrumental Transcommunication	Read it Now
9.	Instrumental Transcommunication	Read it Now
10.	Cultural Impact And Paranormal Groups And Ghost Hunting	Read it Now


	Mainstream Explanations

	Mainstream science has generally ignored EVP, but there are a number of non-paranormal explanations that account for EVP by such mechanisms as radio interference or the tendency of the human brain to recognize patterns in random stimuli. These include: Interference Certain EVP recordings, especially those recorded on devices which contain RLC circuitry, represent radio signals of voices or other sounds from broadcast sources. Interference from CB Radio transmissions and wireless baby minders, or anomalies generated though cross modulation from other electronic devices, are all documented phenomena. It is even possible for circuits to resonate without any internal power source by means of radio reception. Auditory paredolia Auditory pareidolia or Rorschach Audio is a condition created when the brain incorrectly interprets random patterns as being familiar patterns. In the case of EVP it could result in an observer interpreting random noise on an audio recording as being the familiar sound of a human voice. The propensity for an apparent voice heard in white noise recordings to be in a language understood well by those researching it, rather than in an unfamiliar language, has been cited as evidence of this, and a broad class of phenomena referred to by author Joe Banks as Rorschach Audio has been described as a global explanation for all manifestations of EVP. Skeptics such as David Federlein, Chris French, Terrence Hines and Michael Shermer say that some EVP are recorded by raising the "noise floor" - the electrical noise created by all electrical devices - in order to create white noise. When this noise is filtered, it can be made to produce noises which sound like speech. Federlein says that this is no different from using a wah pedal on a guitar, which is a focused sweep filter which moves around the spectrum and creates open vowel sounds. This, according to Federlein, sounds exactly like some EVP. This, in combination with such things as cross modulation of radio stations or faulty ground loops can cause the impression of paranormal voices. The human brain evolved to recognize patterns, and if a person listens to enough noise the brain will detect words, even when there is no intelligent source for them. Expectation also plays an important part in making people believe they are hearing voices in random noise.



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