I currently use a VBA programme to perform a spectral filter on data in Flexpro. The procedure involves:
1) Calculate complex FFT
2) Replace non interesting frequencies by zeros
3) Calculate IFFT
The main advantage of this filter is that it has no effect on signal phase at all. I checked the ‘Digital Filters’ and ‘Spectral Analysis’ descriptions, but couldn’t find this option.
Is there an identical ‘ready’ option available in Flexpro or any of the add-on modules?