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.:

US 7502481 B1

PDF
Full Text
Expired
Date of Patent:
Mar. 10, 2009

Filed:

Aug. 31, 2004
Applicants:

Thomas A. Abrams, Snohomish, WA (US);

Theodore C. Tanner, Jr., Hollywood, WA (US);

Inventors:

Thomas A. Abrams, Snohomish, WA (US);

Theodore C. Tanner, Jr., Hollywood, WA (US);

Assignee:

Microsoft Corporation, Redmond, WA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 3/00 (2006.01); H04R 1/02 (2006.01); H04B 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

Methods, microphones, and processors are provided for processing ambient sound waves. Ultrasound waves are combined with the sound waves to create heterodyned sound waves. The heterodyned sound waves are detected and, in response, a sound detection signal containing information relating to the heterodyned sound waves is generated. A heterodyned audio signal representing the heterodyned sound waves is generated at least partially based on the sound detection signal, and then an ambient sound signal representing the ambient sounds is derived from the heterodyned audio signal.


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Abrams, Thomas. (2009). Microphone with ultrasound/audible mixing chamber to secure audio path (U.S. Patent No. 7502481). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7502481

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