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hearing

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hearing

Ability to perceive sounds. In humans, the organ of hearing is the ear. Humans are unable to hear sounds that have frequencies below 20 Hz or above 20 kHz. Between these two values is our hearing or audible range. The exact width of our audible range varies from person to person, but in general as we age the range narrows. Some animals such as dogs, dolphins, and bats can hear sounds beyond the human audible range. Sounds with frequencies above 20 kHz are called ultrasounds.
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? Mentioned in ? References in classic literature
 
But as we ascend in the social scale, the process of discriminating and being discriminated by hearing increases in difficulty, partly because voices are assimilated, partly because the faculty of voice-discrimination is a plebeian virtue not much developed among the Aristocracy.
Flatland by Abbott, Edwin View in context
I have sometimes thought that the mere hearing of those songs would do more to impress some minds with the horrible character of slavery, than the read- ing of whole volumes of philosophy on the subject could do.
Narrative of the Life of Frederick Douglass An American Slave by Douglass, Frederick View in context
When a sensation--like the hearing of a clap of thunder--is normally correlated with closely similar sensations in our neighbours, we regard it as giving knowledge of the external world, since we regard the whole set of similar sensations as due to a common external cause.
The Analysis of Mind by Russell, Bertrand View in context
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