Learning Experience: FIR Filter Design Using Frequency Sampling Method

In this experiment, we were required to design a digital FIR filter using Frequency Sampling Method (FSM). Scilab was used to implement it.Thus, for the same values of attenuation in stop band and pass band, pass band and stop band frequencies and sampling frequencies we observe that the order of the FIR filter is much higher compared to that of the IIR filter.Phase spectrum is linear within positive lobes of magnitude spectrum.It is discontinuous in hase spectrum between lobes and also when phase spectrum goes out of range.