Integrated automatic telephone switch

Details Integrated automatic telephone switch Integrated automatic telephone switch

H - Electricity

04

R

H04R 25/00 (2006.01) H04M 11/00 (2006.01)

Patent

CA 2447509

A hearing aid includes a microphone for providing an electrical signal representative of a received acoustic signal, a means for filtering the electrical signal and a means for automatic switching. Upon detecting a presence of a magnetic field, the means for automatic switching enables the means for filtering to modify a frequency response of the hearing aid to boost a low frequency gain arid reduce a high frequency gain. Such filtering can be used with or without a telecoil. A hearing aid including a telecoil is configured with a preamplifer, a inductive element, and a switch control integrated onto a single common circuit board.

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