中文摘要：

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．

英文摘要：

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.