Title :
Design of stable IIR filters in the complex domain by automatic delay selection
Author :
Vuerinckx, Rudi ; Rolain, Y. ; Schoukens, J. ; Pintelon, R.
Author_Institution :
ELEC Dept., Vrije Univ., Brussels, Belgium
fDate :
9/1/1996 12:00:00 AM
Abstract :
A major problem encountered when designing infinite impulse response (IIR) filters in the complex domain is to ensure that the filter is stable. Instability occurs frequently when the IIR filter approximates the inverse of a nonminimum phase system. This is often the case for equalization filters. Addition of delay to the target frequency response can result in a stable filter. However, to date, delay selection has been a matter of trial and error. The article presents an automated method for finding the delay
Keywords :
IIR filters; circuit stability; delays; digital filters; equalisers; filtering theory; frequency response; automatic delay selection; complex domain; delay; equalization filters; frequency response; infinite impulse response filters; instability; nonminimum phase system; stable IIR filter design; Circuits; Delay; Digital filters; Finite impulse response filter; Frequency response; IIR filters; Least squares approximation; Linear programming; Signal processing algorithms; Speech processing;
Journal_Title :
Signal Processing, IEEE Transactions on
