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csd ifft

Started by noriakk February 11, 2005
Hi,
I compute the cross spectrum, using the CSD function, and I am trying
to represent it in time-domain using IFFT (see example below). But
what I got in the y-axis is something strange or maybe not-normalized.
Does anybody have tried it before ? How can I perfeclty represent the
power spectrum in time-domain ??

Example:
x = csd(signal);
plot(x);
y = ifft(x);
plot(abs(y));

cheers,
Noriaki