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Caracterizing filters need to compare the level of the direct noise generator scan with the level trough the filter under test, and then plot the difference between the two levels. This can be done in the compare window of the tool tab. But this mean I must save each scan and then reload them for comparing, loosing the display settings of the main window. A process improvement could be done by comparing the two levels directly in the main window, scanning and saving for first the noise generator level as a baseline reference, and then scan filtered levels, directly plotting the difference. I think this will improve the tuning process of filter. Is it possible?