Hello Andrew, Thanks for your reply. If you take 100 runs of transient noise, you can imagine that as a 2 dimensional array. One axis is time and one axis is an index of each run. Your proposal calculates rms in one direction of the array. It means the rms separately for each run across the time and you get 100 points in the graph. I would like the same but in the second direction of the array. It means the rms separately for each time point across all the runs and to get rms time curve in the graph. In fact we need to transpose the array before the rms calculation. Thanks, Karel![]()
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