Title :
A simple Remez exchange algorithm to design IIR filters with zeros on the unit circle
Author :
Jackson, Leland B. ; Lemay, Gerald J.
Author_Institution :
Rhode Island Univ., Kingston, RI, USA
Abstract :
The Martinez-Parks (1978) approach to the design of IIR (infinite impulse response) filters with zeros on the unit circle is modified to provide linear equations at each step of the associated Remez exchange algorithm, greatly simplifying and accelerating the algorithm. Arbitrary upper and lower constraints can be specified on the magnitude response, with equiripple designs including elliptic and Chebyshev (type I) filters as special cases. Examples are given to demonstrate the design method
Keywords :
digital filters; poles and zeros; Chebyshev filters; IIR filters; Martinez-Parks approach; Remez exchange algorithm; design; elliptic filters; equiripple designs; infinite impulse response; linear equations; lower constraints; magnitude response; type I filters; unit circle; upper constraints; zeros; Acceleration; Algorithm design and analysis; Chebyshev approximation; Design methodology; Digital filters; Equations; Finite impulse response filter; IIR filters; Iterative algorithms; Nonlinear equations; Nonlinear filters; Passband; Poles and zeros;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
DOI :
10.1109/ICASSP.1990.115626
