Title :
On the implementation of filters subjected to quantization of coefficients
Author :
Rabbath, C.A. ; Hori, N.
Author_Institution :
Dept. of Mech. Eng., McGill Univ., Montreal, Que., Canada
Abstract :
Digital IIR filters obtained from analog filters and realized with the z operator, delta operator, ε=z-1/T where T is the sampling period, and with the ω´=2 z-1/T z+1, z´=z-1 z˜=z-1/Tz operators are compared under the effect of quantization of transfer function coefficients. It is shown that filter realizations in ε, ω´ or z˜ provide superior performance than z or z´ with fixed- and floating-point processors
Keywords :
IIR filters; digital filters; discrete time filters; filtering theory; floating point arithmetic; mathematical operators; poles and zeros; quantisation (signal); signal sampling; transfer functions; analog filters; coefficients quantization; continuous time domain; delta operator; digital IIR filters; discrete time systems; filter realizations; fixed-point processors; floating-point processors; performance; pole errors; sampling period; transfer function coefficients; z operator; Digital arithmetic; Digital filters; Electronic mail; IIR filters; Mechanical engineering; Quantization; Reduced instruction set computing; Sampling methods; Transfer functions; Upper bound;
Conference_Titel :
Digital Signal Processing Proceedings, 1997. DSP 97., 1997 13th International Conference on
Conference_Location :
Santorini
Print_ISBN :
0-7803-4137-6
DOI :
10.1109/ICDSP.1997.628438
