A nearly optimum linear-phase digital FIR filters design

被引:10
|
作者
Joaquim, Marcelo Basilio [1 ]
Lucietto, Carlos A. S. [2 ]
机构
[1] Univ Sao Paulo, Sch Engn Sao Carlos, Dept Elect Engn, BR-13566590 Sao Carlos, SP, Brazil
[2] DPF RP SP, Sao Paulo, Brazil
关键词
Digital filters; FIR; Linear phase; Optimization; Steepest-descent method;
D O I
10.1016/j.dsp.2011.01.012
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 simple method to design linear-phase finite impulse response (FIR) digital filters, based on the steepest-descent optimization method, is presented in this paper. Starting from the specifications of the desired frequency response and a maximum approximation error a nearly optimum digital filter is obtained. Tests have shown that this method is alternative to other traditional ones such as Frequency Sampling and Parks-McClellan, mainly when other than brick wall frequency response is required as a desired frequency response. (C) 2011 Elsevier Inc. All rights reserved.
引用
收藏
页码:690 / 693
页数:4
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