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:
Dec. 02, 2008
Filed:
Mar. 02, 2000
Willem Soede, Leiden, NL;
Robert B. Schulein, Evanston, IL (US);
Norman P. Matzen, Campbell, CA (US);
Roland Horsten, Delft, NL;
Willem Soede, Leiden, NL;
Robert B. Schulein, Evanston, IL (US);
Norman P. Matzen, Campbell, CA (US);
Roland Horsten, Delft, NL;
Etymotic Research Inc., Elk Grove Village, IL (US);
Abstract
A directional microphone array system generally for hearing aid applications is disclosed. The system may employ a broadside or an endfire array of microphones. In either case, the signals generated by the microphone are added using a plurality of summation points that are connected together via a single signal wire or channel. In the case of the endfire array, all but one of the signals is delayed so that the summation of the signals are in phase. The summation of the signals is then used to generate an output signal for a speaker of a hearing aid or the like.