Digital linear phase notch filter design based on IIR all-pass filter application

被引：24

作者：

Stancic, Goran ^{[1
]}

Nikolic, Sasa ^{[1
]}

机构：

[1] Univ Nis, Fac Elect Engn, Nish 18000, Serbia

来源：

DIGITAL SIGNAL PROCESSING | 2013年 / 23卷 / 03期

关键词：

All-pass filters; Parallel connection; Notch filter; Linear phase; Phase approximation;

D O I：

10.1016/j.dsp.2013.01.006

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：

A new procedure for design of linear phase IIR notch filters is presented in this paper. Resulted filter is realized using parallel connection of two IIR all-pass filters with approximately linear phase. Adequate amplitude characteristic is obtained by approximation of all-pass filter phase. Amplitude characteristic satisfies all prescribed demands but it is not equiripple no matter both all-pass filters have equiripple phase. Algorithm exhibits fast convergence and easy initial values determination. (C) 2013 Elsevier Inc. All rights reserved.

引用

页码：1065 / 1069

页数：5

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