DETERMINING THE OPTIMUM COEFFICIENTS OF IIR ALL-PASS FILTER BASED ON GENETIC ALGORITHM

Abstract

The Digital Signal Processing (DSP) has a very strategic role nowadays in application fields like image
processing, remote sensing, digital technology, and robotics. It becomes vital to estimate the type of response of a system.
The function of filters is to extract meaningful knowledge from the signal or to eliminate the chosen vary of signal
corresponding to noise. Proposed research work presents the technique of finding the optimum coefficients of IIR all-pass
filter which is based on genetic algorithm. The ultimate aim is to find the objective function. It is achieved by minimising
the error between the desired phase and the actual phase response. The evolutionary algorithm required a fitness
function which is to be minimized and when the genetic algorithm is used we tried to develop a fitness function which
gives a better result. The proposed methodology is validated and tested by the results of the simulation using MATLAB
tool.