Korg Poly800/EX800 Users

I was wondering, does the DEG affect both the resonance and the cutoff
or just the cutoff?

Just cutoff, even so modulating the resonance is sometimes usefull it's pretty 
uncommon that the filter envelope modulates the resonance. Synths that can do 
that are mostly using a mod-matrix to route envelope, LFO ... to resonance...

On 27 Aug 2005 at 18:49, jonsmith6669 wrote:

> I was wondering, does the DEG affect both the resonance and the cutoff
> or just the cutoff?
> 
> 
> 
> 
> 
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> On 27 Aug 2005 at 18:49, jonsmith6669 wrote:
> 
> > I was wondering, does the DEG affect both the resonance and the 
> > cutoff or just the cutoff?

>Just cutoff, even so modulating the resonance is sometimes usefull 
>it's pretty uncommon that the filter envelope modulates the 
>resonance. Synths that can do that are mostly using a mod-matrix to 
>route envelope, LFO ... to resonance...

Wrong!

What is cutoff?
It's the highest frequency the filter doesn't cut (speaking of high 
pass filter, of course!).

What is resonance?
It's the boost of the cutoff frequency.
The parameter "resonance" regulates the amount of the boost of the 
cutoff frequency.

So, when you modulate the filter with deg you move the cutoff 
frequency and so you DO modulate the resonance too, but you DON'T 
modulate the amount of this resonance.

Very very few old synths are able to modulate the amount of resonance 
(with eg, lfo, aftertouch or other...) but today it's very common 
with new synths like Supernova, Fantom, Voyager, ...


Laurent

On 6 Sep 2005 at 20:37, Laurent Lacroix wrote:

> > On 27 Aug 2005 at 18:49, jonsmith6669 wrote:
> > 
> > > I was wondering, does the DEG affect both the resonance and the
> > > cutoff or just the cutoff?
> 
> >Just cutoff, even so modulating the resonance is sometimes usefull
> >it's pretty uncommon that the filter envelope modulates the
> >resonance. Synths that can do that are mostly using a mod-matrix to
> >route envelope, LFO ... to resonance...
> 
> Wrong!
> 
> What is cutoff?
> It's the highest frequency the filter doesn't cut (speaking of high
> pass filter, of course!).

Well, but the Poly 800 using a Low Pass, so what... come on, we don't write 
scientific paper, we're trying to help newbies with their first steps. Being 
selcentered and explaining things one don't need know to solve a problem is in 
most cases less helpfull since it very possible irritates the asking person...
 
> What is resonance?
> It's the boost of the cutoff frequency.

...and the region around that frequency depending on the filtercurve...

> The parameter "resonance" regulates the amount of the boost of the
> cutoff frequency.

> So, when you modulate the filter with deg you move the cutoff 
> frequency and so you DO modulate the resonance too, but you DON'T
> modulate the amount of this resonance.

No you don't, since resonance is a parameter, what it creates is a formant. Since 
this is the right name for those peaks, so when you move the filter frequency on 
high resonance you're moving a formant and not the resonance...


...Summa



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