Design of IIR digital allpass filters using least pth phase error criterion

Author

Tseng, Chien-Cheng

Author_Institution

Dept. of Comput. & Commun. Eng., Nat. Kaohsiung First Univ. of Sci. & Technol., Taiwan

Volume

4

fYear

2003

fDate

25-28 May 2003

Abstract

In this paper, the problem of designing a digital IIR allpass filter to have an arbitrarily prescribed phase response is considered. The filter coefficients are determined by using least pth phase error criterion. An iterative reweighted least squares method is used to obtain the optimal filter coefficients by solving a set of linear simultaneous equations in each iteration. Design examples of Hilbert transformer and fractional delay filter are demonstrated to illustrate the effectiveness of the new design method.

Keywords

IIR filters; all-pass filters; delay filters; digital filters; least squares approximations; Hilbert transformer; IIR digital allpass filters; filter coefficients; fractional delay filter; iterative reweighted least squares method; least pth phase error criterion; linear simultaneous equation; phase response; Computer errors; Design methodology; Digital filters; Equations; Finite impulse response filter; IIR filters; Least squares methods; Minimax techniques; Nonlinear filters; Signal design;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on

Print_ISBN

0-7803-7761-3

Type

conf

DOI

10.1109/ISCAS.2003.1205810

Filename

1205810