Why a Tiger's Roar Produces Infrasound That Causes Paralysis, Vibration and Fear
The Frequency Below HearingA tiger's roar peaks at around 18 Hz, just below the threshold of human hearing, which begins at 20 Hz. That gap is not a flaw in the tiger's design. It is the design. Infrasound at 18 Hz does not enter the ear cleanly the way a…
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