The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 24, 2007
Filed:
Oct. 31, 2002
Mark A. Bren, Loretto, MN (US);
Lawrence T. Hagen, Deephaven, MN (US);
Randall W. Roberts, Eden Prairie, MN (US);
Timothy S. Peterson, Lino Lakes, MN (US);
Mark A. Bren, Loretto, MN (US);
Lawrence T. Hagen, Deephaven, MN (US);
Randall W. Roberts, Eden Prairie, MN (US);
Timothy S. Peterson, Lino Lakes, MN (US);
Micro Bar Technology, Inc., Plymouth, MN (US);
Abstract
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 and 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 preamplifier, a inductive element, and a switch control integrated onto a single common circuit board.