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:
Aug. 11, 2015
Filed:
Dec. 14, 2009
Alan R. Watson, Buchanan, MI (US);
Michael A. Bryson, Hudsonville, MI (US);
Robert R. Turnbull, Holland, MI (US);
Alan R. Watson, Buchanan, MI (US);
Michael A. Bryson, Hudsonville, MI (US);
Robert R. Turnbull, Holland, MI (US);
GENTEX CORPORATION, Zeeland, MI (US);
Abstract
A vehicular microphone system () for post processing optimization of a microphone signal includes a first transducer () and second transducer () separated by a predetermined distance within an automotive mirror. A first high pass filter network () is connected to the first transducer () while a second high pass filter network () connected to the second transducer (). A low frequency shelving filter () is used for receiving the output from the second high pass filter (). A first all pass filter () is connected to the low frequency shelving filter () and a second all pass filter () is used in connection with the first all pass filter () for tailoring audio characteristics. A summing amplifier () is used for summing the output of the first high pass filter network () and the second all pass filter network () such that the first transducer () and second transducer () operate with improved directivity resulting in enhanced signal-to-noise performance in a substantially noisy vehicular environment.