Prosthetic device for optimizing speech understanding through adjustable frequency spectrum responsesġ. Hearing aids, signal supplying apparatus, systems for compensating hearing deficiencies, and methodsĭevice for the compensation of hearing impairments ![]() Phone-line-linked, tone-operated control deviceĪpparatus for use in the adjustment of the secondary adjustment means of a hearing aid Tone-responsive circuit for activating an instrumentality interfacing systemĭifferential hearing aid with programmable frequency response Test bench for the adjustment of electro-acoustic channels and particularly of devices for auditory correction Hearing aid responsive to signals inside and outside of the audio frequency rangeĪudio signal processing circuit for use in a hearing aid and method for operating same Hearing aid amplification method and apparatusįrequency selection circuit for hearing aids ![]() Signal processor for and an auditory prosthesis having spectral to temporal transformation
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