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:
Feb. 11, 2020
Filed:
Sep. 07, 2018
Applicant:
Knowles Electronics, Llc, Itasca, IL (US);
Inventors:
Henrik Thomsen, Holte, DK;
Yu Du, Itasca, IL (US);
Assignee:
Knowles Electronics, LLC, Itasca, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10K 11/178 (2006.01); B81B 3/00 (2006.01); H04R 3/00 (2006.01); H04R 17/02 (2006.01);
U.S. Cl.
CPC ...
G10K 11/17853 (2018.01); B81B 3/0021 (2013.01); H04R 3/005 (2013.01); H04R 17/02 (2013.01); B81B 2201/0257 (2013.01); G10K 2210/3028 (2013.01);
Abstract
A digital microphone device includes circuitry that can reduce the risk of noise caused due to an idle tone frequency component in a digital signal output by the digital microphone device. In stereo mode and other applications where interference occurs between two or more such microphones, each microphone device includes a digital output having a corresponding idle tone frequency, one of which is offset to shift noise components outside of a desired frequency range.