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When the beat frequency is very low, we hear periodic maxima and minima. Our ear cannot perceive a on-off like sound when its frequency is more than 10 Hz. So, beat frequency in audible range will not appear like a sound going on and off. Do we perceive any special when the beat frequency is in the audible range (20 to 20000 Hz) ? (Let us assume that we can perceive every sound whose frequency is in the audible range)

Qmechanic
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