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Hypersonic effect
The hypersonic effect is a term coined to describe a phenomenon reported in a controversial scientific study by Tsutomu Oohashi et al., which supports the idea that although humans cannot consciously hear sounds at frequencies above approximately 20 kHz, the presence or absence of those frequencies has a measurable effect on their psychological reaction.
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Ultrasonic hearing
Ultrasound
More related topics
Hearing
Acoustics
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