DocumentCode :
1333242
Title :
Chebyshev optimization for the design of broadband beamformers in the near field
Author :
Nordholm, S.E. ; Rehbock, V. ; Tee, K.L. ; Nordebo, S.
Author_Institution :
Dept. of Signal Process., Karlskroniv Univ., Ronneby, Sweden
Volume :
45
Issue :
1
fYear :
1998
fDate :
1/1/1998 12:00:00 AM
Firstpage :
141
Lastpage :
143
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
Keywords :
FIR filters; array signal processing; multidimensional digital filters; optimisation; Chebyshev optimization; broadband beamformer; computer application; design; hands-free mobile telephony; microphone array; multidimensional digital FIR filter; near field; video conference; Chebyshev approximation; Computer applications; Design methodology; Design optimization; Finite impulse response filter; Microphone arrays; Mobile computing; Multidimensional systems; Telephony; Videoconference;
fLanguage :
English
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
Publisher :
ieee
ISSN :
1057-7130
Type :
jour
DOI :
10.1109/82.659466
Filename :
659466
Link To Document :
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