Why can't people hear all the frequent sounds ?

Why can't people hear all the frequent sounds ?
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1 Answer

Answer :

Vibration of an object produces sound of different frequencies. But people do not hear the sound of all the frequencies. In humans, the audible range is between 20Hz and 20,000Hz . As a result, when the frequency of sound is less than 20Hz and more than 20,000Hz , people cannot hear the created sound.
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