Designand Comparison Between IIR Butterwoth and Chebyshev Digital Filters Using Matlab

Abstract

Digital filters are one of the most fundamental and cardinal components in the area of digital signal processing. They eliminate either partially or completely the noise or other undesirable components present in the signal. In this paper we have designed and studied the IIR filters using Butterworth and Chebyshev algorithms, and compared them with each other for further analysis. The requisite parameters for designing IIR filters are pass band frequency, sampling frequency, pass band ripples and stop band ripples. We have used MATLAB Simulink and filter design and analysis (FDA) tool which gives accurate pole zero plot to verify the stability of system (filter).