A new estimation formula for minimum filter length of optimum FIR low-pass digital filters

Author

Ichige, Koichi ; Ueda, Kiyoshi ; Iwaki, Mamoru ; Ishii, Rokuya

Author_Institution

Tsukuba Univ., Ibaraki, Japan

Volume

3

fYear

1997

fDate

9-12 Sep 1997

Firstpage

1303

Abstract

This paper presents an accurate estimation formula for the minimum filter length of optimum (the minimax criterion based) FIR low-pass digital filters when ripples in passband and those in stopband are identical. Two estimation formulae have been already proposed, but they have some problems which lead to wrong estimation. Discussing the problems based on both experimental results and theoretical considerations, we propose a new estimation formula. The accuracy of the proposed formula, is evaluated for some design examples and compared with that of the conventional formulae

Keywords

FIR filters; digital filters; filtering theory; low-pass filters; minimax techniques; FIR low-pass digital filter; estimation formula; minimax criterion; minimum filter length; optimum FIR filters; passband ripples; stopband ripples; Cutoff frequency; Design optimization; Digital filters; Educational institutions; Finite impulse response filter; Information filtering; Information filters; Low pass filters; Minimax techniques; Passband;

fLanguage

English

Publisher

ieee

Conference_Titel

Information, Communications and Signal Processing, 1997. ICICS., Proceedings of 1997 International Conference on

Print_ISBN

0-7803-3676-3

Type

conf

DOI

10.1109/ICICS.1997.652198

Filename

652198