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:
Dec. 27, 2011
Filed:
Apr. 25, 2007
Applicants:
Tim Haulick, Blaubeuren, DE;
Gerhard Uwe Schmidt, Ulm, DE;
Markus Buck, Biberach, DE;
Martin Roessler, Ulm, DE;
Hans-joerg Koepf, Amstetten, DE;
Inventors:
Tim Haulick, Blaubeuren, DE;
Gerhard Uwe Schmidt, Ulm, DE;
Markus Buck, Biberach, DE;
Martin Roessler, Ulm, DE;
Hans-Joerg Koepf, Amstetten, DE;
Assignee:
Nuance Communications, Inc., Burlington, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 15/00 (2006.01); H04B 3/20 (2006.01); H04R 3/00 (2006.01); H04R 27/00 (2006.01); H03G 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A system reduces echoes in an audio system by de-correlating audio signals. Adaptive filters provide compensation based on the de-correlated signals. A controller controls the de-correlation based upon the adaptation state of the adaptive filters.