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:
Feb. 16, 2016
Filed:
Jan. 23, 2013
Applicant:
Microsoft Corporation, Redmond, WA (US);
Inventors:
Assignee:
Microsoft Technology Licensing, LLC, Redmond, WA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04B 3/20 (2006.01); H04R 3/00 (2006.01); H04M 9/08 (2006.01); H04R 3/02 (2006.01);
U.S. Cl.
CPC ...
H04R 3/005 (2013.01); H04M 9/082 (2013.01); H04R 3/02 (2013.01);
Abstract
A multichannel acoustic echo reduction system is described herein. The system includes an acoustic echo canceller (AEC) component having a fixed filter for each respective combination of loudspeaker and microphone signals and having an adaptive filter for each microphone signal. For each microphone signal, the AEC component modifies the microphone signal to reduce contributions from the outputs of the loudspeakers based at least in part on the respective adaptive filter associated with the microphone signal and the set of fixed filters associated with the respective microphone signal.