[sdiy] SVF & phase

[patchell]

    Well, if you could build a filter like that, it would probably not sound
very interesting.  The changing phase relationship between the overtones is
what make a filter sound interesting...IMHO...

    One thing for sure, you will have a difficult time making a filter with
zero change in phase.  You can make one that has a constant (or near
constant) time delay vs frequency, but that is about it (time delay and
phase shift are related)..  Your only hope may be in the digital domain,
using finite impulse response filters (a subject I am not at all familiar
with), but even with that, I am doubtful.



mark s wrote:

> greets,
> what are some options for building a state-variable filter with a
> better-than normal phase response ? what would one have to do to make an
> SVF that had zero change in phase  (theory or reality) ?
>
> mark

--
 -Jim
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