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Topic: random time-series displacement data from PSD and back again
Replies: 5   Last Post: Jun 24, 2013 9:01 PM

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Jim Schwendeman

Posts: 7
Registered: 6/21/13
Re: random time-series displacement data from PSD and back again
Posted: Jun 24, 2013 6:31 PM
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TideMan,

Maybe the better question is this:

When I create my time-series data, how do I know that it's scaled correctly? When I replicated the complex conjugate prior to the ifft, I doubled the number of points, so I guess I'm not entirely sure.

I believe I am correct, because if I do the sum(abs(y).^2), that is equal to the mean g^2/Hz from the original PSD, which leads me to believe I've satisfied Parseval's theorem.

Thoughts?



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