Jim Choate <ravage@einstein.ssz.com> writes:

You want a continuous Fourier transform, not a discrete one, to determine the frequency spectrum of the waveform being sampled. The FFT is simply an algorithm for computing the DFT without redundant computation. In general, any Lebesgue integrable complex function will have a Fourier transform, even one with a finite number of discontinuities. The reverse transform will faithfully reproduce the function, modulo the usual caveats about function spaces and sets of measure zero.

Well of course! My thoughts exactly. Great minds think alike. Now, would you mind doing a little translation (for the laymen), since I didn't understand? I appreciate it, Alex F =-=-=-=-=-=-=-=-=-=-=-=-=- Alex F alexf@iss.net Marketing Specialist Internet Security Systems =-=-=-=-=-=-=-=-=-=-=-=-=-