Approximation of complex-valued 2-D frequency response specifications by separable-denominator digital filters

Author

Brandenstein, H. ; Unbehauen, R.

Author_Institution

Lehrstuhl fur Allgemeine und Theor. Elektrotech., Erlangen-Nurnberg Univ., Germany

Volume

3

fYear

1997

fDate

21-24 Apr 1997

Firstpage

2161

Abstract

In this paper the approximation of a complex-valued specification by the frequency response of a 2-D IIR separable-denominator (SD) digital filter is considered. The approximation problem is transformed into an equivalent one, where a real-valued 2-D IIR SD digital filter with some additional characteristics has to be determined that approximates a given real-valued 2-D FIR digital filter. A theorem is presented that helps to reduce the number of parameters in the FIR-to-IIR approximation problem and a procedure to solve the problem numerically is given

Keywords

IIR filters; approximation theory; filtering theory; frequency response; frequency-domain analysis; polynomials; two-dimensional digital filters; 2D IIR separable-denominator digital filter; 2D frequency response; FIR-to-IIR approximation problem; approximation problem; bilinear transform; complex-valued specification; Computer aided analysis; Digital filters; Finite impulse response filter; Frequency domain analysis; Frequency response; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on

Conference_Location

Munich

ISSN

1520-6149

Print_ISBN

0-8186-7919-0

Type

conf

DOI

10.1109/ICASSP.1997.599476

Filename

599476