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:
Aug. 31, 2010
Filed:
Dec. 17, 2004
Peter L. Chu, Lexington, MA (US);
Michael Kenoyer, Austin, TX (US);
Richard Washington, Marble Falls, TX (US);
Peter L. Chu, Lexington, MA (US);
Michael Kenoyer, Austin, TX (US);
Richard Washington, Marble Falls, TX (US);
Polycom, Inc., Pleasanton, CA (US);
Abstract
In accordance with the present invention, a system and method for computing a location of an acoustic source is disclosed. The method includes steps of processing a plurality of microphone signals in frequency space to search a plurality of candidate acoustic source locations for a maximum normalized signal energy. The method uses phase-delay look-up tables to efficiently determine phase delays for a given frequency bin number k based upon a candidate source location and a microphone location, thereby reducing system memory requirements. Furthermore, the method compares a maximum signal energy for each frequency bin number k with a threshold energy E(k) to improve accuracy in locating the acoustic source.