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. 18, 2018
Filed:
Jan. 31, 2017
Applicant:
Knowles Electronics, Llc, Itasca, IL (US);
Inventors:
Assignee:
Knowles Electronics, LLC, Itasca, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 19/01 (2006.01); H04R 3/04 (2006.01); H04R 19/04 (2006.01); H04R 1/24 (2006.01); H04R 3/06 (2006.01); H04S 7/00 (2006.01);
U.S. Cl.
CPC ...
H04R 3/04 (2013.01); H04R 1/245 (2013.01); H04R 3/06 (2013.01); H04R 19/04 (2013.01); H04R 2201/003 (2013.01);
Abstract
A microphone includes a first micro electro mechanical system (MEMS) motor, the first MEMS motor including a first diaphragm and a first back plate; and a second MEMS motor including a second diaphragm and a second back plate. The first diaphragm is electrically biased relative to the first back plate according to a first voltage, the second diaphragm is biased relative to the second back plate according to a second voltage, and a magnitude of the first voltage is different from a magnitude of the second voltage.