Title: Design of far-field and near-field broadband beamformers using eigenfilters
Authors: Doclo, Simon ×
Moonen, Marc #
Issue Date: Dec-2003
Publisher: Elsevier science bv
Series Title: Signal processing vol:83 issue:12 pages:2641-2673
Abstract: This paper discusses two novel non-iterative design procedures based on eigenfilters for designing broadband beamformers with an arbitrary spatial directivity pattern for an arbitrary microphone configuration. In the conventional eigenfilter technique a reference frequency-angle point is required, whereas in the eigenfilter technique based on a TLS (total least squares) error criterion, no reference point is required. It is shown how to design broadband beamformers in the far-field, near-field and mixed near-field far-field of the microphone array. Both eigenfilter techniques are compared with other broadband beamformer design procedures (least-squares, maximum energy array, non-linear criterion). It will be shown by simulations that among the considered non-iterative design procedures the TLS eigenfilter technique has the best performance, i.e. best resembling the performance of the non-linear design procedure but having a significantly lower computational complexity. (C) 2003 Elsevier B.V. All rights reserved.
ISSN: 0165-1684
Publication status: published
KU Leuven publication type: IT
Appears in Collections:ESAT - STADIUS, Stadius Centre for Dynamical Systems, Signal Processing and Data Analytics
Faculty of Engineering Science - miscellaneous
× corresponding author
# (joint) last author

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