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Creating EVP through Ultrasound

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Published on Dec 24, 2009

This clip demonstrates how to fabricate Electronic Voice Phenomena through modulated ultrasound, without manipulating the recorder or the recorded sound files. It is shown how to prepare an inaudible ultrasound sample and then record that sample with digital and tape recorders, making it audible again. The approach presented here is based on digital aliasing and nonlinear distortion.

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