Title :
IIR filters with maximum impulse response symmetry
Author :
Vucic, Maden ; Babic, Hrvoje
Author_Institution :
Fac. of Electr. Eng. & Comput., Zagreb Univ., Croatia
Abstract :
A class of optimum IIR discrete time systems based on the impulse response symmetry criterion is presented. Optimization of rational transfer function parameters of the second to the tenth order, with (i) zeros at the origin and (ii) zeros located on the real axis, is carried out. The optimum systems have the smallest symmetry error for a given system order. In the frequency domain they approximate a constant group delay and have a quasi Gaussian amplitude response. The filter design procedure is outlined. The impulse invariance method based on continuous time systems with symmetric impulse response is also considered
Keywords :
IIR filters; delays; digital filters; filtering theory; poles and zeros; transfer functions; transient response; IIR filters; constant group delay; continuous time systems; filter design procedure; impulse invariance method; maximum impulse response symmetry; optimum IIR discrete time systems; quasiGaussian amplitude response; rational transfer function parameters; symmetric impulse response; system order; Continuous time systems; Delay; Discrete time systems; Finite impulse response filter; Frequency domain analysis; IIR filters; Linear approximation; Poles and zeros; Transfer functions;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.778849
