Selecting the Gain of Hearing Aids for Persons with Sensorineural Hearing Impairments

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Abstract
A procedure is described for determining the gain requirements as a function of frequency for persons who have sensorineural hearing impairments. It is based on delivering sounds at preferred listening levels which are estimated from hearing threshold levels. Adjustments are incorporated in the procedure so that all frequency components of a speech signal will be presented with approximately equal loudness, thus enabling the maximum amount of speech signal to be delivered without exceeding comfort level in any frequency region. Special advantages of the procedure are that it is more widely applicable than many others and that the final selection is in terms of real-ear gain measured with the selected hearing aid being wom by the individual.

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