Title :
Minimal ARMA lattice digital filter realization
Author_Institution :
Dept. of Electr. & Comput. Eng., Windsor Univ., Ont., Canada
Abstract :
In this paper, a minimal and normalized ARMA lattice filter structure for the realization of arbitrary IIR digital filters is presented. ne filter structure is minimal in terms of the numbers of coefficients and delays, and exhibits a high degree of structural regularity and modularity. A Levinson-type algorithm is used to compute the reflection coefficients. The magnitude of the reflection coefficients of such a stable filter is bounded by unity and consequently stability can be conveniently checked. Lowpass, highpass, bandpass, and bandstop digital filter realization examples are given.
Keywords :
IIR filters; autoregressive moving average processes; band-pass filters; band-stop filters; digital filters; filtering theory; high-pass filters; lattice filters; low-pass filters; Levinson-type algorithm; arbitrary IIR digital filters; coefficients; delays; minimal ARMA lattice filter structure; modularity; normalized ARMA lattice filter structure; reflection coefficients; stable filter; structural regularity; Algorithm design and analysis; Band pass filters; Delay; Digital filters; IIR filters; Lattices; Reflection; Speech synthesis; Stability; Transfer functions;
Conference_Titel :
Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on
Print_ISBN :
0-7803-7761-3
DOI :
10.1109/ISCAS.2003.1205834
