On Tue, 6 Nov 2007, Stephen Wille Padnos wrote:
> And if that wasn't easy enough, here's more or less all you need to do a
> two-tap FIR (or IIR - I don't remember) filter using comp (untested):
> FUNCTION(_) {
> float temp = in;
> out = temp * coeff1 + old * (1-coeff1);
> old = temp;
> }
I know, I know! I've already studied THAT thing :PPP
It's a FIR design since it doesn't use the previous output values. The IIR form
of the same order should be
out = temp * a + old * b + out * c
^^^^^^^^^ the IIR part :D
the values for a, b and c are left as an useful exercise :PPPP
Now I'm taking lessons from a colleague which works with TMS C4 DSP, so I hope
he should know how to design a filter...
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