I tested another method for converting from FIR to IIR other than the 2 mentioned in post 841.
I got this one from Yoichi, called poles fitting, you can read about it more if you want at: http://www.rssd.esa.int/SP/LISAPATHFINDER/docs/Data_Analysis/DA_Six/Heinzel.pdf.
Seems it's not doing much good for us though.
I am attaching a PDF file with the plots, which have N=50,100,600,1000, respectivaly. |