Jan, Nothing extra because I usually compare the data against the model so the same weighting on both time-series would not add discriminating power

Example: The Fourier amplitude spectrum comparison below may not reveal anything different if the same weighting or tapering was applied to both model and data.
![](https://imagizer.imageshack.com/img922/1339/p1qc8l.png)

Yet it would be interesting if it would, so if you have some ideas, please share.