How do I whiten a spectrum of a time series?

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Kevin
Kevin 2016-1-23
评论： Dr. Erol Kalkan, P.E. 2017-12-7
Hello all, my question seems rather simple. I want a simple filter that will flaten or whiten the spectrum of a seismic time series. I just want to take the time series into frequency and dived the spectrum by a weighted (smoothed) version of the spectrum and then take it back into time. Anything simple?
Thanks
  1 个评论
Dr. Erol Kalkan, P.E.
Dr. Erol Kalkan, P.E. 2017-12-7
I have posted a function to conduct spectral whitening of time series at
https://www.mathworks.com/matlabcentral/fileexchange/65345-spectral-whitening
This function allows for whitening the spectrum for the user defined frequency band.

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Image Analyst
Image Analyst 2016-1-23
So what happens if you take the magnitude and compute the smoothed signal with conv(), rsmooth(), sgolayfilt(), lowess, or any other smoothing function then divide your signal by that and scale and inverse transform?

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