Abstract
In this paper we present two new variable step size (VSS) methods for adaptive filters. These vs.S methods are so effective; they eliminate the need for a separate double-talk detection algorithm in echo cancellation applications. the key feature of both approaches is the introduction of a new near-end signal energy estimator (NE-SEE) that provides accurate and computationally efficient estimates even during double-talk and echo path change events. the first vs.S algorithm applies the NESEE to the recently proposed Nonparametric vs.S NLMS (NPVSS-NLMS) algorithm. the resulting algorithm has excellent convergence characteristics with an intrinsic immunity to double-talk. the second approach is somewhat more ad hoc. It is composed of a combination of an efficient echo path change detector and the NESEE. This vs.S method also has excellent convergence, double talk immunity, and computational efficiency. Simulations demonstrate the efficacy of both proposed algorithms. ©2008 IEEE.
Recommended Citation
M. A. Iqbal and S. L. Grant, "Novel Variable Step Size NLMS Algorithms for Echo Cancellation," ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, pp. 241 - 244, article no. 4517591, Institute of Electrical and Electronics Engineers, Sep 2008.
The definitive version is available at https://doi.org/10.1109/ICASSP.2008.4517591
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
Acoustic echo canceller; And AEC; Double-talk detection; Echo path change detection
International Standard Book Number (ISBN)
978-142441484-0
International Standard Serial Number (ISSN)
1520-6149
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
16 Sep 2008
