Hearing aids

Details Hearing aids Hearing aids

H - Electricity

04

R

349/26

H04R 25/00 (2006.01) H03G 9/02 (2006.01)

Patent

CA 1202111

ABSTRACT "IMPROVEMENTS IN OR RELATING TO HEARING AIDS" A hearing aid comprising a microphone whose output signal is split by high and low pass filters and supplied to two channels. Each channel includes a variable gain circuit . The outputs of the variable gain circuits are mixed by a mixer and supplied to an earphone . The turnover frequencies of the filters are such that one channel limits the dynamic range of vowels whereas the other channel limits the dynamic range of consonents, thus preventing interaction and masking of consonents by preceding vowels. The intelligibilty of speech is thus improved.

413971

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