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I have a sinusoidal time domain signal with few damped exponential components.
i.e.

fn=[0.4 0.6 1.0];E=[0.03 0.05 0.1];A=[1.0 2.0 3.0];
wn=2*pi.*fn;a=E.*wn;wd=wn.*sqrt(1-E.^2); 
x=A(1)*exp(-a(1)*t).*sin(wd(1)*t)+A(2)*exp(-a(2)*t).*...
sin(wd(2)*t)+A(3)*exp(-a(3)*t).*sin(wd(3)*t);

How can I extract the damping ratios and frequency components of this signal by Prony method.

Your help is much appreciated.

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A quick Google search reveals the Prony Toolbox on Mathworks file exchange.

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  • $\begingroup$ I have a time-domain signal and want to extract its damping and frequency components.I don't know who to use this toolbox, any help? @Phonon $\endgroup$ – Electricman Apr 30 '14 at 9:48
  • $\begingroup$ @Electricman Without running the toolbox. I looked at the thumbnail for it on file exchange. On the left there is a results box with mode, amplitude and damping freq. I guess that it what you want? Have you tried running the demo in the toolbox and working out how to use it? $\endgroup$ – nivag May 1 '14 at 16:06
  • $\begingroup$ @nivag Yes I just saw it extracts the damping too.I've tried to to install this toolbox. but at the first step I don't know how to import the time-domain signal in it.lol let me know if you get the hang of it. $\endgroup$ – Electricman May 1 '14 at 16:38

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