M通道LPPRFB分析滤波器对称性与长度的选择方法研究  

A Method for Choosing Analysis Filters Symmetry Polarities and Lengths of M-Channel LPPRFB

作　　者：彭安金[1] 庄圣贤[2] 

机构地区：[1]西南民族大学电气信息工程学院,四川成都610041 [2]西南交通大学电气工程学院,四川成都610031

出　　处：《电子学报》2008年第4期627-631,共5页Acta Electronica Sinica

基　　金：国家自然科学基金(No.60603009/F020104)

摘　　要：根据M通道LPPRFB的线性相位和理想重建特性,本文不仅找到了选择分析滤波器对称性与长度的充要条件,而且还从理论上推导出了分析滤波器类型组合以及分析滤波器长度之间的关系,从而提出M通道LPPRFB分析滤波器对称性与长度选择的一般方法.严格的理论推导以及目前文献所报道的LPPRFB研究结果,均验证了此方法的通用性和有效性.On the basis of linear phase and perfect reconstruction characteristics of M-channel LPPRFB, not only is the necessary and sufficient condition for choosing analysis filters＇ symmetry polarities and lengths found, but also the permissible combinations of analysis filters and the relation of analysis filters＇lengths are derived. Consequently, a general method for choosing analysis filters＇symmetry polarities and lengths of M-channel LPPRFB is proposed. The generality and availability of the method is verified by the strict derivations and the results of M-channel LPPRFB reported in the literature.

关 键 词：多速率滤波器组 线性相位 理想重建 分析滤波器类型组合 

分 类 号：TN713[电子电信—电路与系统]