https://scholars.lib.ntu.edu.tw/handle/123456789/122126
標題: | Minimax design of two-channel nonuniform-division filterbanks using IIR allpass filters | 作者: | Lee, Ju-Hong Yang, Yuan-Hau |
公開日期: | 2004 | 卷: | 52 | 期: | 11 | 起(迄)頁: | 3227-3240 | 來源出版物: | IEEE Transactions on Signal Processing | 摘要: | The design of two-channel linear-phase nonuniform-division filter (NDF) banks constructed by infinite impulse response (HR) digital allpass filters (DAFs) in the sense of L∞ error criteria is considered. First, the theory of two-channel NDF bank structures using two IIR DAFs is developed. Then, the design problem is appropriately formulated to result in a simple optimization problem. Utilizing a variant of Karmarkar's algorithm, we can efficiently solve the optimization problem through a frequency sampling and iterative approximation method to find the coefficients for the HR DAFs. The resulting two-channel NDF banks can possess approximately linear-phase response without magnitude distortion. The effectiveness of the proposed technique is achieved by forming an appropriate Chebyshev approximation of a desired phase response and then to find its solution from a linear subspace in a few iterations. Several simulation examples are presented for illustration and comparison. © 2004 IEEE. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/155846 https://www.scopus.com/inward/record.uri?eid=2-s2.0-7544222879&doi=10.1109%2fTSP.2004.836532&partnerID=40&md5=ba992943752e3f93963693a4305a7e7e |
ISSN: | 1053587X | SDG/關鍵字: | Chebyshev approximation; Computer simulation; IIR filters; Iterative methods; Optimization; Allpass filters; Minimax optimization; Nonuniform-division filterbank; Signal filtering and prediction |
顯示於: | 電信工程學研究所 |
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