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:
Mar. 10, 2009
Filed:
Aug. 31, 2004
Thomas A. Abrams, Snohomish, WA (US);
Theodore C. Tanner, Jr., Hollywood, WA (US);
Thomas A. Abrams, Snohomish, WA (US);
Theodore C. Tanner, Jr., Hollywood, WA (US);
Microsoft Corporation, Redmond, WA (US);
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.