Hi all,
I'm stumped by the following:
z = poisspdf(30:60,1); % generates Poisson signal
fz = fft(z);zf = ifft(fz);
but both z and zf are not the same. However, it seems fine for the following:
a = [1 2 3 4 5]*1e-100; % generate signal with small energy
fa = fft(a);af = ifft(fa);
Is there some kind of aliasing effect going on, or am I missing something? It seems to not work on fast decaying signals.
Best Answer