Digital Audio Recorders & White Noise Generators:

Electronic voice phenomena - or EVP - are an event in which human-sounding voices from an unknown source are heard on recording tape, digital recordings, in radio station noise and other electronic media. Most often, EVPs have been captured on audiotape. The voices are not heard at the time of recording; it is only when the tape is played back that the voices are heard.

Some EVP is more easily heard and understood than others. And they vary in gender (men and women), age (women and children), tone and emotion. They usually speak in single-words, phrases and short sentences. Sometimes they are just grunts, groans, growling and other vocal noises. EVP has been recorded speaking in various languages.

The quality of EVP also varies. Some are difficult to distinguish and are open to interpretation as to what they are saying. Some EVP, however, are quite clear and easy to understand. EVP often has an electronic or mechanical character to it; sometimes it is natural sounding. The quality of EVP is categorized by researchers:

The most fascinating aspect of EVP is that the voices sometimes respond directly to the persons making the recording.

We use a variety of digital audio recorders to record evp's. Or mainstays are the Olympus VN-4100PC and the Sony ICD-P620 with omnidirectional microphones attached. We chose these because of cost and the capability to download directly to the computer for evaluation. The white noise generators sometimes help in our quest to capture evp's.

Lance Brooks (TSS Co-Founder, Tech Manager and Lead Investigator)