[sdiy] SVF & phase

[Seb Francis]

Tom May wrote:

> Magnus Danielson <cfmd at swipnet.se> writes:
>
> > > I'm wondering, what is "better" or "worse" regarding the phase
> > > response of a synthesizer filter?
> >
> > The actual goal should really be formulated as having a minimal impact on the
> > sound, other than that modification you intended (amplitude modification).
> > Weither phase changes or close to no phase changes are better or not (or even
> > unrelated) is however something one has to discover, but it is not given as
> > being assumed in the original question. This is the difficult thing, separating
> > out the actual requested property and the underlying assumption that led to the
> > formulation used in the question.
>
> In a synthesizer, phase is an issue since phase changes will affect
> the sound when the filter is modulated, as the changing phase detunes
> the harmonics.

.. which I would say is actually a desirable effect that gives a filter some of its sonic character.

Seb