On characterization of linear phase nonuniform filter banks

被引：4

作者：

Nalbalwar, Sanjay ^{[1
]}

Joshi, S. D. ^{[1
]}

Patney, R. K. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Elect Engn, Delhi, India

来源：

SIGNAL PROCESSING | 2008年 / 88卷 / 08期

关键词：

filter banks; nonuniform filter bank; linear phase; linear phase property; perfect reconstruction filter bank;

D O I：

10.1016/j.sigpro.2008.02.009

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, a condition. termed as linear phase condition (LPC), which ensures that the filters of a nonuniform filter bank are linear phase, is presented. It is observed that the proposed LPC is also applicable to the uniform filter bank case. Further, the utility of this LPC to find (i) necessary restrictions on the filters lengths, (ii) the number of symmetric and antisymmetric filters in the filter bank and (iii) filter bank decimation factors is also investigated. The results obtained for the different cases are also presented in the form of tables. These tables will facilitate the design of nonuniform filter bank by ruling out the non-solvable cases and by reducing the search space, thus saving the designers' precious time. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1980 / 1989

页数：10

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