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Stearns William P, Lauchner John K: Apparatus and prosthetic device for providing electronic correction of auditory deficiencies for aurally handicapped persons. Shalako Resource Systems, Lyon & Lyon, January 8, 1974: US3784750 (36 worldwide citation)

There is disclosed herein improved methods and apparatus for measuring and describing auditory deficiencies for purposes of prescribing compensatory amplification, and improved methods and apparatus for providing such compensatory amplification in a prosthetic device in practical wearable form, and ...


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Stearns William P: Method and apparatus for providing electronic sound clarification for aurally handicapped persons. Shalako Resource Systems, Lyon & Lyon, January 8, 1974: US3784745 (12 worldwide citation)

A method is described for determining the frequency response curve or characteristic to be incorporated into sound amplification apparatus utilized by aurally handicapped persons. An auditory threshold is first determined as a function of frequency utilizing pink or white noise passed through 1/3 oc ...


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