Paper Info
Title
Bi-criterion optimization of non-uniform filter banks for acoustic echo cancellation.
Abstract
A new method for designing non-uniform filter-banks for acoustic echo cancelation is proposed. In the method, the analysis prototype filter design is framed as a bi-criterion optimization problem that minimizes the aliasing power while maximizing the bandwidth. Consequently, an optimal trade-off curve between filter bandwidth and aliasing power is obtained, which is then used for selecting the most appropriate filter. To increase the degrees of freedom during optimization, no constraints are imposed on the phase or group delay of the filters. Experimental results show that the filter bank designed using the proposed method provides (1) greater reduction of aliasing power after analysis, (2) uniform reduction of the aliasing power across the spectrum after synthesis, and (3) greater flexibility in the selection of prototype filters.
Year
DOI
Venue
2011
10.1109/ISCAS.2011.5937755
ISCAS
Keywords
Field
DocType
acoustic signal processing,channel bank filters,echo suppression,optimisation,signal denoising,acoustic echo cancellation,aliasing power,bi-criterion optimization problem,filter bandwidth,group delay,nonuniform filter banks,optimal trade-off curve,prototype filter design,prototype filter selection
Active filter,Root-raised-cosine filter,Anti-aliasing filter,Control theory,Prototype filter,Computer science,Electronic engineering,Aliasing,Adaptive filter,m-derived filter,Filter design
Conference
ISSN
Citations 
PageRank 
0271-4302
0
0.34
References 
Authors
4
2
Name
Order
Citations
PageRank
Rajeev C. Nongpiur1577.06
Dale J. Shpak2154.34