Thank you very much to make the effort of trying to enlighten ignorants such as
myself.

This is where I'm lost:
What I think I know: the phasing effect is one signal being sent out of phase and mixed with its original version.
Now: isn't the phase shift of this shifted signal, due to the physical effect of passing through some sort of filter (something like notch or BP)

Then the mix of the two would create some level of interference (destructive or constructive), which are function of the amount of phase shift (and the nature
of the filter used to create the phase shift)... no

--- In Doepfer_a100@yahoogroups.com , Florian Anwander <fanwander@...> wrote:
>
> Am 08.06.2012 18:05, schrieb ctujoao:
> > And now , I'm confused: how do the sweeping notches in the frequency
> > spectrum are created (I'm just referring to the manual) I'm googling
> > like a maniac, but it's less and less clear.
>
> Those created by the phase cancelation, when the phse shifted signal is
> mixing with the original signal.
>
> Set the A-125 to zero "resonance" and "mix" fully clockwise (no original
> signal), sweep the "shift": you don't hear any notch and not
> phaser-effect at all.
> Now turn the mix back to 12oclock position, but still zero "resonance"
> and sweep "shift": you will hear the notch now.
>
> if you add "resonance" you will have also some kind of mix. That is why
> you hear the notch with resonance and mix fully clockwise.
>
>
> To explain in detail this I would need some graphics. Maybe I will do
> this some other day.
>
>
> --
> http://fa.utfs.org/
>