Title :
Design of 2-D recursive digital filters with non-circular symmetric cut-off boundary and constant group-delay responses
Author :
Ahmadi, Mahdi ; Lee, H. ; Shridhar, M. ; Ramachandran, V.
Author_Institution :
Dept. of Electr. Eng., Windsor Univ., Ont., Canada
Abstract :
A method is presented for generating a one-variable Hurwitz polynomial using properties of the positive definite matrices coupled with resistance matrices. Also, the authors test the two-term and three-term separable-denominator transfer functions for their effectiveness in the design of two-dimensional (2-D), noncircular, symmetric 2-D filters with constant group-delay specification. While both transfer functions yield satisfactory results, the two-term separate denominator filter requires more multipliers than the three-term separate denominator filter, making the former more economical to design and implement
Keywords :
filtering and prediction theory; two-dimensional digital filters; 2-D recursive digital filters; constant group-delay responses; constant group-delay specification; filter design; multipliers requirement; noncircular symmetric cut-off boundary; one-variable Hurwitz polynomial; separable-denominator transfer functions; three-term separate denominator filter; two-term separate denominator filter; Delay; Digital filters; Equations; Frequency; Mean square error methods; Optimization methods; Passband; Symmetric matrices; Tiles; Transfer functions;
Conference_Titel :
Circuits and Systems, 1989., IEEE International Symposium on
Conference_Location :
Portland, OR
DOI :
10.1109/ISCAS.1989.100547
