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:
Sep. 12, 2000
Filed:
May. 13, 1997
Applicant:
Inventors:
Daniel A Quinlan, Warren, NJ (US);
Hanh Vu-Maesto, Oxford, MA (US);
Assignee:
Lucent Technologies Inc., Murray Hill, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04R / ; H04R / ; H04R / ;
U.S. Cl.
CPC ...
381356 ; 379433 ;
Abstract
Flow-induced noise affecting microphones used in such applications as cellular phones is reduced by providing a deflector, made of an acoustically transmissive, high flow resistance material, disposed at a certain distance from the microphone pressure sensing area. The distance between the pressure sensing are and the deflector may be determined experimentally in consideration of any space constraints imposed by the specific application, and for cellular phones in particular, is approximately as little as 2 or 3 mm from the outside surface of the deflector.