COMPUTER EXPERIMENTS OF DIGITAL IIR FILTER DESIGN PROCEDURE USING CHEBYSHEV-I APPROACH AND IMPULSE INVARIANCE PROCEDURE

摘要

The digital IIR (Infinite Impulse Response) filter has been one of the crucial elements in telecommunication and Digital Signal Processing (DSP) and design procedures for it have been proposed in terms of precision, computation time and implementation complexity. In this paper we undetake detailed analyses through computer experiments of the IIR filter design procedure using Chebyshev-I approach with impulse invariance procedure. In the algebraic computer simulation, two investigated experiments of low pass IIR filter design procedures are analyzed in both algebraic and computer processing. From the Chebyshev-I procedure, the magnitude, in decibels dB, and the phase of the frequency response between the digital filter and the analog filter are analyzed in depth to demonstrate their implementation characteristics.