Chebyshev Optimization for the Design of Broadband Beamformers in the Near Field

Document type: Journal Articles
Article type: Original article
Peer reviewed: Yes
Author(s): Sven Nordholm, Volke Rehbock, Kok Ley Teo, Sven Nordebo
Title: Chebyshev Optimization for the Design of Broadband Beamformers in the Near Field
Journal: IEEE transactions on circuits and systems. 2 : Analog and digital signal processing
Year: 1998
Volume: 45
Issue: 1
Pagination: 141-143
ISSN: 1057-7130
Publisher: IEEE Circuits and Systems Society
City: New York
Organization: Blekinge Institute of Technology
Department: Dept. of Signal Processing (Institutionen för signalbehandling)
Dept. of Signal Processing S-372 25 Ronneby
+46 455 780 00
http://www.hk-r.se/isb/isb_en.html
Authors e-mail: Sven.Nordholm@isb.hk-r.se
Language: English
Abstract: The use of microphone arrays for video conferences, hands-free mobile telephony and computer applications has created the demand for near-field broadband beamformer design methods. Here, a general broadband beamformer design problem is formulated as a weighted Chebyshev optimization problem, and a method to solve the resulting functionally-constrained problem is presented. The formulation can also be applied to the design of multidimensional digital finite-impulse response (FIR) filters with an arbitrarily specified amplitude and phase. Numerical results that demonstrate the minimax near-field behavior of the designed beamformers are given.
Subject: Signal Processing\Beamforming
Signal Processing\Filter Design
Note: Submitted for publication in IEEE Transactions on Circuits and Systems, II: Analog and Digital Signal Processing, January 1996
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