fig7-35.m

数字信号处理（机械工业出版社）的源码

% fig7-35
f = [0 .4 .4 .6 .6  1];
H = [0  0  1  1  0  0];
fs = 1000; % assumed sampling rate
fhz = f*fs/2;
plot(fhz,H)
title('Desired Frequency Response')
xlabel('Frequency (Hz)')
ylabel('Magnitude')