Good suggestion. For some reason, I usually find the order is backwards from
what I would intuitively think! There was an interesting thread on this a while
back:
http://tinyurl.com/3s6dc

"Att" <[email protected]> wrote in message
news:agGvd.124735$[email protected]..
> Just another thought. Did you make sure you cycled through the coeffs in
> the right order.
> Try reversing the sequence in which you use the coeffs.
> Although I am as careful as I can be, I can't tell you how many times I end
> up experimenting
> till I get the sequencing right.
>
> Regards,
> Dave Shaw
> >
> > Could someone here please give me advice on what mistakes in implementing
> > the polyphase M-fold decimation filters lead to the sort of "weirdness"
> that
> > I got from my C implementation? That would be of much support in finding
> > what I did wrong.
> >
> > If someone who desires to help me wants to have a look at the Simulink
> Model
> > that I implemented, to the output of my C (for SHARC) implementation,
> and/or
> > to my C implementation itself, please let me know, and I will be more than
> > pleased in sending it to you.