Global Hearing Aid Market Research Report: 2014 Edition
People are said to suffer from hearing loss when they have diminished sensitivity to the sounds that are normally heard by others. In speech frequencies, certain people have relative insensitivity to sound. Such situation is termed as hearing impairment. The increase in volume above the usual sound levels necessary before the listeners can detect it determines the severity of hearing loss. There are three types of hearing loss: Conductive, Sensorineural and Mixed hearing loss. The hearing losses according to the...
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