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.)

--

r b-j [email protected]

"Imagination is more important than knowledge."