Title :
A new improvement to the Powell and Chau linear phase IIR filters
Author :
Djokic, Bojan ; Popovic, Miodrag ; Lutovac, Miroslav
Author_Institution :
MOBTEL BKPTT, Belgrade, Yugoslavia
fDate :
6/1/1998 12:00:00 AM
Abstract :
An improvement to the realization of the linear-phase IIR filters is described. It is based on the rearrangement of the numerator polynomials of the IIR filter functions that are used in the real-time realizations proposed in literature. The new realization has better total harmonic distortion when a sine input is used, and it has smaller phase and group delay errors due to finite section length
Keywords :
IIR filters; delays; digital filters; error analysis; filtering theory; harmonic distortion; polynomials; IIR filter functions; Powell-Chau linear phase IIR filters; finite section length; group delay error; numerator polynomials; phase delay error; real-time realizations; sine input; total harmonic distortion; Delay; Design methodology; Frequency; IIR filters; Noise level; Phase distortion; Phase noise; Polynomials; Total harmonic distortion; Transfer functions;
Journal_Title :
Signal Processing, IEEE Transactions on
