US Patent 7522740 Multi-coil coupling system for hearing aid applications

Patent 7522740 was granted and assigned to Etymotic Research on April, 2009 by the United States Patent and Trademark Office.

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Patent Inventor Names

Stephen D. Julstrom0

Viorel Drambarean0

Willem Soede0

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Patent abstract

A hearing improvement device using a multi-coil coupling system and methods for operating such a device are disclosed. An embodiment of the present invention may use an array microphone to provide highly directional reception. The received audio signal may be filtered, amplified, and converted into a magnetic field for coupling to the telecoil in a conventional hearing aid. Multiple transmit inductors may be used to effectively couple to both in-the-ear and behind-the-ear type hearing aids, and an additional embodiment is disclosed which may be used with an earphone, for users not requiring a hearing aid.

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