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ex7_16 - ylabel'|Xk| xlabel'k axis[0 31 0 10...

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% Example 7.16 n=0:16; L = 32; h = (.8).^n; clf subplot(211), stem(n,h) xlabel('n') ylabel('h[n]') axis([0 16 0 1]) pause Hk = fft(h,L); k = 0:31; subplot(211),stem(k,abs(Hk)) title('Example 7.16, plot of Hk') ylabel('|Hk|') xlabel('k') axis([0 31 0 5]) subplot(212),stem(k,angle(Hk)*180/pi) ylabel('Angle(Hk), degrees') xlabel('k') axis([0 31 -100 100]) pause clf x = [ones(1,10)]; Xk = fft(x,L); subplot(211),stem(k,abs(Xk)) title('Plot of Xk')
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Unformatted text preview: ylabel('|Xk|') xlabel('k') axis([0 31 0 10]) subplot(212),stem(k,angle(Xk)*180/pi) ylabel('Angle(Xk), degrees') xlabel('k') axis([0 31 -200 200]) pause Yk = Hk.*Xk; y = ifft(Yk,L); n=0:31; clf subplot(211),stem(n,real(y)) % y should be real, but may have some negligible imag part title('Plot of y[n]') ylabel('y[n]') xlabel('n') axis([0 31 0 5]) subplot(111)...
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