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. 24, 2010
Filed:
Aug. 18, 2003
Hamid Reza Abutalebi, Yazd, IR;
Robert L. Brennan, Kitchener, CA;
Hamid Sheikhzadeh-nadjar, Waterloo, CA;
Dequn Sun, Neuchatel, CH;
Hamid Reza Abutalebi, Yazd, IR;
Robert L. Brennan, Kitchener, CA;
Hamid Sheikhzadeh-Nadjar, Waterloo, CA;
Dequn Sun, Neuchatel, CH;
Semiconductor Components Industries, LLC, Phoenix, AZ (US);
Abstract
A method and system for processing subband signals using adaptive filters is provided. The system is implemented on an oversampled WOLA filterbank. Inputs signals are oversampled. The system includes an adaptive filter for each subband, and the functionality of improving the convergence properties of the adaptive filter. For example, the convergence property is improved by whitening the spectra of the oversampled subband signals and/or affine projection algorithm. The system is applicable to echo and/or noise cancellation. Adaptive step size control, adaptation process control using Double-Talk detector may be implemented. The system may further implement a non-adaptive processing for reducing uncorrelated noise and/or cross-talk resistant adaptive noise cancellation.