Device for the compensation of hearing impairments

Details Device for the compensation of hearing impairments Device for the compensation of hearing impairments

H - Electricity

04

R

349/26

H04R 25/00 (2006.01)

Patent

CA 1198509

ABSTRACT OF THE DISCLOSURE An exemplary embodiment includes a plurality of parallel signal channels coupled with a signal input transducer, such as a microphone or induction coil. Each of the signal channels includes a respective bandpass filter for selection of a different frequency band, a controlled-gain amplifier, controlled by a volume control potentiometer, circuits for non-linear signal processing, and a bandpass filter for the reduction of distortion components caused by the non-linear processing circuits. A summing amplifier combines the signal components from all channels and is connected via an amplifier to an output signal transducer. Space require- ments and power consumption are reduced in such a multi-channel processing arrangement by implementing all of the filters as sampled-data analog circuits. As a result hearing aids are provided which can be worn on the head, e.g. behind the ear.

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