User talk:Deaf not dumb

Definition Hearing loss Hearing loss exists when there is diminished sensitivity to the sounds normally heard. The term hearing impairment is usually reserved for people who have relative insensitivity to sound in the speech frequencies. The severity of a hearing loss is categorized according to the increase in volume that above the usual level before the listener can detect it. Deafness is defined as the degree poor hearing such that a person is unable to understand speech through hearing even in the presence of amplification. In profound deafness, even the loudest sounds that can be produced by an audiometer (an instrument used to measure hearing) may not be detected. Totally deaf comes next after profoundly deaf, these will have no hearing at all.

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Salma Vian (talk) 14:29, 13 August 2012 (UTC)

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