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. 28, 2012
Filed:
Oct. 24, 2008
Applicants:
Muralidhar Karthik, Singapore, SG;
George Sapna, Singapore, SG;
Anoop Kumar Krishna, Singapore, SG;
Inventors:
Assignee:
STMicroelectronics Asia Pacific Pte., Ltd., Singapore, SG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 3/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A system and method for Acoustic Echo Cancellation. The system and method include a subband affine projection filter and a variable step size controller configured to cancel an estimated echo from a near-end signal. The system and method also include a divergence detector adapted to reset the subband affine projection filter in response to determining a divergence is occurring. Additionally, the system and method include a double talk detector adapted to transmit a signal to mask an output signal when double talk is detected.