Title :
Adaptive frequency selective filters
Author :
Halfin, Marcia ; Coutu, Gerard ; Sturim, Doug ; Stearns, Samuel D.
Author_Institution :
Electr. Boat Div., Gen. Dynamics, Groton, CT, USA
Abstract :
The theory and performance of adaptive frequency selective filters is examined. The frequency sampling filter is a realization of a FIR filter as the cascade of an all-zero FIR filter with a bank of IIR digital resonators. The result of such a realization is that each coefficient can be directly identified with an amplitude of the transfer function at a particular frequency. The update method is the LMS algorithm, with the desired signal as a delayed version of the input. A discussion of the application of the adaptive frequency sampling filters to sub-band coding is included
Keywords :
adaptive filters; cascade networks; digital filters; encoding; filtering and prediction theory; least squares approximations; transfer functions; FIR filter; IIR digital resonators; LMS algorithm; all-zero FIR filter; daptive frequency selective filters; filter coefficient; filter performance; filter theory; frequency sampling filter; sub-band coding; transfer function; update method; Adaptive filters; Digital filters; Filtering theory; Finite impulse response filter; Frequency; IIR filters; Least squares approximation; Resonator filters; Sampling methods; Transfer functions;
Conference_Titel :
Signals, Systems and Computers, 1993. 1993 Conference Record of The Twenty-Seventh Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-8186-4120-7
DOI :
10.1109/ACSSC.1993.342347
