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Title: Fast QRD-lattice-based unconstrained optimal filtering for acoustic noise reduction
Authors: Rombouts, Geert ×
Moonen, Marc #
Issue Date: Nov-2005
Publisher: Institute of Electrical and Electronics Engineers
Series Title: IEEE Transactions on Speech and Audio Processing vol:13 issue:6 pages:1130-1143
Abstract: We derive a fast QRD-least-squares lattice (QRD-LSL) based unconstrained optimal filtering algorithm for multi-channel acoustic noise reduction. As known from the literature, the unconstrained optimal filtering approach is an alternative to the popular GSC beamforming, which does not rely on a priori information and hence possesses improved robustness. The optimal filtering problem involved is special in that the desired response signal is not known explicitly. The derivation of the QRD-LSL algorithm is based on a significantly reorganized version of a QRD-RLS-based unconstrained optimal filtering scheme. Overall an order of magnitude complexity reduction is obtained without any performance penalty, which makes this new approach affordable for real time implementation.
URI: 
ISSN: 1063-6676
Publication status: published
KU Leuven publication type: IT
Appears in Collections:ESAT - STADIUS, Stadius Centre for Dynamical Systems, Signal Processing and Data Analytics
Electrical Engineering - miscellaneous
× corresponding author
# (joint) last author

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