Al Clark wrote:
> robert bristow-johnson <[email protected]> wrote in
> news:C03382A7.1063A%[email protected]:
>
> > in article [email protected] , Al
> > Clark at [email protected] wrote on 03/07/2006 14:00:
> >>
> >> The even length FIR does not place a zero at PI. I never use these
> >> since the In Phase tap would be 1/2 of a delay unit.
> >
> > i think it's an even length linear-phase FIR that does that. the
> > delay of a symmetric FIR with N taps is (N-1)/2 . so N should be odd.
> > (one thing is that if half-band symmetry is taken advantage of, every
> > odd-indexed tap will have a zero coefficient which can cut the
> > computational cost in half.)
> >
>
> I think that is what I said. I always use the odd length.

ooops. upon review, i dunno how i read that.

r b-j