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:
Mar. 25, 2014
Filed:
Oct. 13, 2008
Alan R. Watson, Buchanan, MI (US);
G. Bruce Poe, Hamilton, MI (US);
Alan R. Watson, Buchanan, MI (US);
G. Bruce Poe, Hamilton, MI (US);
Gentex Corporation, Zeeland, MI (US);
Abstract
A microphone assembly includes one or more transducers () that are positioned in one or more housings. A preprocessing circuit () includes a inverted comb filter () for eliminating predetermined frequencies between harmonics of the human voice in a predetermined frequency range. A processing circuit () coupled to the preprocessing circuit () is used for outputting an electrical signal such that the transducers () used in combination with the processing circuit () very effectively cancels noise. The microphone assembly can be employed in a vehicle accessory such as a vehicular mirror.