EVPS(electronic voice phenomena) are
believed to be the voices of spirits. They can either be the voices of a
residual spirit energy or that of an active spirit who is caught on
audio. You can capture EVPS with a tape recorder that uses actual tapes,
or one one of the newer digital audio recorders. P.R.I.S.M uses both
audiocassette recorders and digital recorders on our investigations.
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Prism's 