On Fri, Oct 19, 2012 at 10:24 AM, Rudolf Widmer-Schnidrig
<address@hidden> wrote:
Dear List,
to estimate the transfer function of a liner system I feed a well defined input signal into the system and record the output.
One way which I have followed so far is to FFT both the input and the output, divide output by input and feed
the resulting spectrum into invfreqs. This gives me the desired pole-zero representation of my system.
Question: can this be gotten without first FFTing the input and output?
What routines would I call?
I'd be glad to just get a sketch of the necessary steps.
sincerely, -Ruedi
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