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|Title:||Improved algorithm to design weighted minimax quadrature mirror filters|
|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  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|
|Appears in Collections:||Staff Publications|
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