Earlier today I constructed yet another SISO filter for MCL. The one thing that stands out about this filter is its strong roll off . This prevents high frequency noise injection into YARM. The caviat, filter performance suffered quite a bit, but there is subtraction going on.
I have realized that Vectfit lacks the ability of constraining the fits it produces, (AC coupling, rolloff, etc) even with very nitpicky weighting. So the way I used vectfit to produce this filter will be explained in a future eLOG, I think it might be promising.
Anyways, the usual plots are shown below.
Training data + Predicted FIR and IIR subtraction:
Online subtraction results:(High freq. stuff shown for noise injection evaluation of the filter)