Now it works fine! Great example for me who are not so familiar with filters. I attached one example where you can see now raw data (PU 50) and next one is filtered by CFC 180 (I had once possibility use diadem for while). Third one is filterd by butterworth 4-order and last by example yours but I of course change those values to corresponds CFC 180. Seems to working pretty well otherwise but it increases signal value. Do you have any hint for that?
I found one mistake in formula (ao) whein I corrected that it funcs well. Some short delay there is still but it is half shorter compare to butterworth.
Big thanks to you Thomas now I can use this universal filter module
the given filter is just the two-pole version with phase shift. data has to pass the filter a second time in reverse direction to compensate for phase shift. maybe this removes gain also.
afaik this not possible today. Would you like to spend some bucks so that we get some founding on it? the digital filter module would get an option for zero-phasing - which does this reversal kind of thing...
