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. 23, 2016
Filed:
Jan. 21, 2014
Applicant:
Conexant Systems, Inc., Irvine, CA (US);
Inventors:
Youhong Lu, Irvine, CA (US);
Trausti Thormundsson, Irvine, CA (US);
Yair Kerner, Kiryat Ono, IL;
Ragnar H. Jonsson, Laguna Niguel, CA (US);
Assignee:
CONEXANT SYSTEMS, INC., Irvine, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 9/08 (2006.01); H04M 3/00 (2006.01);
U.S. Cl.
CPC ...
H04M 3/002 (2013.01); H04M 9/082 (2013.01);
Abstract
Traditionally, echo cancellation has employed linear adaptive filters to cancel echoes in a two way communication system. The rate of adaptation is often dynamic and varies over time. Disclosed are novel rates of adaptation that perform well in the presence of background noise, during double talk and with echo path changes. Additionally, the echo or residual echo can further be suppressed with non-linear processing performed using joint frequency-time domain processing.