Design of FIR filter using window method

                     Here we design Digital Filter using windowing technique and study spectrum of filter. We  have to choose to cases for i/p specification parameter for LPF and HPF respectively.

     Then design filterby selecting appropriate window function are as follow :-

          Hd(w) = Mod(Hd(w) ) → By IDFT (on integrating Hd(w)) → hd(n)  then, h(n) = hd(n).w(n)

         After this plot magnitude spectrum and phase spectrum and verify values of Ap and As in Pass Band and Stop Band from magnitude spectrum.

          Observe the Phase Spectrum plot.