A REALIZATION METHOD FOR AN ARMA LATTICE FILTER WITH REDUCED NUMBER OF COEFFICIENTS

This paper proposes realization methods of two kinds of low sensitivit y ARMA lattice filters which can perform frequency-weighting model ide ntification with input estimation and low sensitivity of their filters . Using the proposed realization method, the filter with the fewer coe fficients than the previous filter can be obtained. Since the calculat ion costs for the realization of the filter are reduced, the proposed realization methods are significant. Furthermore, assuming that the AR MA lattice filters have low sensitivity, however, this paper shows tha t the proposed ARMA lattice filters have low sensitivity by simulation s, which is important for practical implementation of filters.