DocumentCode :
2148650
Title :
A proportionate adaptive algorithm with variable partitioned block length for acoustic echo cancellation
Author :
Loganathan, Pradeep ; Habets, Emanuël A P ; Naylor, Patrick A.
Author_Institution :
Dept. of Electr. & Electron. Eng., Imperial Coll. London, London, UK
fYear :
2011
fDate :
22-27 May 2011
Firstpage :
73
Lastpage :
76
Abstract :
Due to the nature of an acoustic enclosure, the early part (i.e., direct path and early reflections) of the acoustic echo path is often sparse while the late reverberant part of the acoustic path is normally dispersive. In order to account for this structure within the acoustic impulse response when performing acoustic echo cancellation, we propose an adaptive filter that consists of two time-domain partition blocks, with adaptive block partitioning, such that different adaptive algorithms can be used for each block. Specifically, the improved proportionate normalized least-mean-square (IPNLMS) algorithm is used. Simulation results show that the proposed variable length partitioned block IPNLMS (VLPB-IPNLMS) algorithm works well in both sparse and dispersive circumstances and in practical applications involving time-varying systems.
Keywords :
acoustic signal processing; echo suppression; least mean squares methods; acoustic echo cancellation; acoustic enclosure; adaptive block partitioning; improved proportionate normalized least-mean-square algorithm; proportionate adaptive algorithm; time-domain partition blocks; variable partitioned block length; Adaptive algorithms; Convergence; Dispersion; Echo cancellers; Partitioning algorithms; Signal processing algorithms; Adaptive algorithms; IPNLMS algorithm; Sparse and dispersive impulse responses; Variable filter length;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2011 IEEE International Conference on
Conference_Location :
Prague
ISSN :
1520-6149
Print_ISBN :
978-1-4577-0538-0
Electronic_ISBN :
1520-6149
Type :
conf
DOI :
10.1109/ICASSP.2011.5946331
Filename :
5946331
Link To Document :
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