I need a realy fast crosscorrelation-function for signal-processing. LabView has a builtin-crosscorelation-function but this is a aperiodic correlation, I need a periodic CC. I created the function I need in LabView, but it need nearly twenty times longer than the built in function. I´ve tried if a .dll is faster but it is not faster than my old function. I think this damned for-loops slow down the algorythm.
Can anybody help me, making this algorythm faster?
I would be very grateful for some hints.
(Excuse me please for my bad english.)