Lab-8

In this experiment we got the frequency response of infinite and finite impulse response signals, we obtained the conditions for which they behave as different kinds of filters.For IIR filter , for pole on right it is low pass filter while for pole on left it is high pass filter.For FIR filter ,for input a = [1  6 5 2 5 6 1] it is band reject filter . For input b = [1 6 5 2 -5 -6 -1] it is band pass filter.

The aim of this experiment was to plot the frequency response of Discrete Time system i.e. for FIR (Finite Impulse Response) and IIR (Infinite Impulse Response). This experiment was again performed on MATLAB and the graph for this was plotted on MATLAB itself. From this experiment we learned that the FIR system acts as a low pass filter while the IIR system acts as a Band Pass Filter. For FIR, the magnitude response exhibits lobes and phase response was linear while for IIR the phase response was non-linear.