No hardware yet. I plan to use an HSDIO to capture ADC stream output. I am using a designers simulated input, and another designers integer coefficents. I can't post most of the details.
Attached doc shows spectral smearing from my custom Moving Avergae filter with LabView generated sinewave. Of course it gets much larger for more iterations and decimation stages.
Odd how the FFT shows it in vi too. Sinad is much better, but cropping adds smear?