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%% Yule-Walker Design of Lowpass Filter % Design an 8th-order lowpass filter with normalized cutoff frequency 0.6. % Plot its frequency response and overlay the response of the corresponding % ideal filter. % Copyright 2015 The MathWorks, Inc. %% f = [0 0.6 0.6 1]; m = [1 1 0 0]; [b,a] = yulewalk(8,f,m); [h,w] = freqz(b,a,128); plot(w/pi,abs(h),f,m,'--') xlabel 'Radian frequency (\omega/\pi)', ylabel Magnitude legend('Yule-Walker','Ideal'), legend boxoff