% Program P10_8% Design of Uniform DFT Filter Banksclf;% Design the prototype FIR lowpass filterb = remez(20, [0 0.2 0.25 1], [1 1 0 0], [10 1]);w = 0:2*pi/255:2*pi; n = 0:20;for k = 1:4;  c = exp(2*pi*(k-1)*n*i/4);  FB =  b.*c;  HB(k,:) = freqz(FB,1,w);end% Plot magnitude responses of each filtersubplot(2,2,1)plot(w/pi, abs(HB(1,:)));xlabel('\omega/