Title :
A note on the orthogonal realization of allpass digital filters and their finite wordlength performance
Author :
Kanellakis, A. ; Agathoklis, P. ; Tawfik, A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada
fDate :
10/1/1996 12:00:00 AM
Abstract :
In this correspondence, a direct method to obtain an orthogonal realization of an allpass transfer function from the entries of the Jury table or the Schur-Cohn test is presented. The performance of this orthogonal realization using fixed- or floating-point implementation is discussed. Based on this formulation, simple formulae for the coefficient sensitivity and output roundoff noise variances are obtained. The results are illustrated with an example
Keywords :
all-pass filters; digital arithmetic; digital filters; floating point arithmetic; interference (signal); noise; Jury table; Schur-Cohn test; allpass digital filters; allpass transfer function; coefficient sensitivity; finite wordlength performance; fixed-point implementation; floating-point implementation; orthogonal realization; output roundoff noise variances; Digital filters; Testing; Transfer functions;
Journal_Title :
Signal Processing, IEEE Transactions on
