?? ex031100.m
字號:
n = -5:10; x = rand(1,length(n));
k = -100:100; w = (pi/100)*k; % frequency between -pi and +pi
X = x * (exp(-j*pi/100)).^(n'*k); % DTFT of x
% folding property
y = fliplr(x); m = -fliplr(n); % signal folding
Y = y * (exp(-j*pi/100)).^(m'*k); % DTFT of y
% verification
Y_check = fliplr(X); % X(-w)
error = max(abs(Y-Y_check)) % Difference
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