Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/72687
Title: Improved algorithm to design weighted minimax quadrature mirror filters
Authors: Goh, Chee-Kiang
Lim, Yong-Ching 
Ng, Chun-Sum 
Issue Date: 1996
Source: Goh, Chee-Kiang,Lim, Yong-Ching,Ng, Chun-Sum (1996). Improved algorithm to design weighted minimax quadrature mirror filters. Proceedings - IEEE International Symposium on Circuits and Systems 2 : 381-384. ScholarBank@NUS Repository.
Abstract: Recently, it was discovered that the weighted least squares algorithm presented in [1] produced quadrature mirror filters with transition-band anomaly when the transition-band width is wide. This results in sub-optimal solutions. In this paper, we propose an improved weighted least squares algorithm to overcome this problem. In our new method, a term is added to the objective function of the weighted least squares optimization problem. This effectively suppresses the oscillatory components in the transition-band of the resulting filter. Significant improvements in the stop-band attenuation of the filters as well as the overall filter bank responses are achieved for such cases.
Source Title: Proceedings - IEEE International Symposium on Circuits and Systems
URI: http://scholarbank.nus.edu.sg/handle/10635/72687
ISSN: 02714310
Appears in Collections:Staff Publications

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