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:
Nov. 14, 2017
Filed:
Oct. 11, 2016
Applicant:
Amazon Technologies, Inc., Seattle, WA (US);
Inventors:
Robert Ayrapetian, Morgan Hill, CA (US);
Arnaud Jean-Louis Charton, Livermore, CA (US);
Yuwen Su, Cupertino, CA (US);
Assignee:
Amazon Technologies, Inc., Seattle, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 3/20 (2006.01); H04R 3/12 (2006.01); H04R 3/02 (2006.01); H04M 9/08 (2006.01); H04S 7/00 (2006.01);
U.S. Cl.
CPC ...
H04R 3/12 (2013.01); H04M 9/082 (2013.01); H04R 3/02 (2013.01); H04S 7/301 (2013.01); H04S 7/305 (2013.01); H04R 2227/007 (2013.01); H04R 2420/07 (2013.01);
Abstract
An acoustic echo cancellation (AEC) system that detects and compensates for differences in sample rates between the AEC system and a set of wireless speakers based on a search-based trial-and-error technique. The system individually determines a frequency offset for each microphone-speaker pair using an iterative process, determining an echo-return loss enhancement (ERLE) value for each offset that is tried, and selecting the frequency offset associated with the largest ERLE value.