Reports

Human Perception of Illumination with Pulsed Ultrahigh-Frequency Electromagnetic Energy

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Science  27 Jul 1973:
Vol. 181, Issue 4097, pp. 356-358
DOI: 10.1126/science.181.4097.356

Abstract

A psychophysical study of the perception of "sound" induced by illumination with pulse-modulated, ultrahigh-frequency electromagnetic energy indicated that perception was primarily dependent upon peak power and secondarily dependent upon pulse width. The average power did not significantly affect perception. Perceived characteristics of pitch and timbre appeared to be functions of modulation.