When you say this ,it makes sence to sample/hold the top most pressure
with one key......I find you can apply more pressure on a single key
than on a key within a chord as your strength gets more evenly
distributed across the hand with a chord....If the hold time didnt
exist, playing a loud melody and then adding notes in the same hand
would cause a drop in effect of the AT you are trying to maintain on
that note....Pretty clever but...
Is it possible to hit that "hard" velocity without causing some AT
happening......I thought when I pounded down to cause a high velocity
occurrence my inertia would add aftertouch briefly to the note causing
an extra amplification around the attack time....would this slight hold
of my initial AT be in play as the decay portion commences??? thus
causing the bump or is this circuit actually modifying the attack time
which is set with the envelope?????
BTW if you try to use too much single fingering on the G.F while in
irresponsive mode.......you end up with a lot of time for intimate full
hand clusters.....:o
Max Fazio wrote:
> Yeah, Laurie, a kind of!
> You were right about your statement, actually, the implementations of
> the
> touch response which came after the patents I mentioned ( mostly uspns
>
> 4018125 , 3816636 and 3626075 ) , reported a touch response as a
> derivative
> function of the aftertouch , with FETs and OTAs combined to "sample"
> the
> higest AT value you play on an estimated basis then keeping it and
> lowering
> it to the velocity level value you set then havng the double advantage
> of a
> sharp attack at high levels ( then also the "bump" when the waveform
> starts
> to output ) which focuses also on the filters giving the piano or
> pluck
> effect....
>
> PS: My ex girlfriend loved aftertouch and varied pitch by sliding a
> finger
> or two on her, you could start from 0Hz to high pitch.....happily she
> didn't
> love velocity at all..... ;-)
>
> M
> ----- Original Message -----
> From: "laurie" <laurie@...>
> To: <yamahacs80@yahoogroups.com>
> Sent: Friday, May 19, 2006 1:41 AM
> Subject: Re: [yamahacs80] CS80 touch reponse: mistery solved!!!
>
>
> > Do you think this is there so you could overwrite a slow attack with
>
> > aftertouch prior to the decay sequence and is this vector based as
> in
> > +Change of CV is touch responsive and -Change of CV is touch
> > irresponsive.......
> >
> > BTW....My girlfriend is exactly like this....When I touch her, her
> > response is to peak at a high amplitude before I get cutoff and then
> she
> > is in touch irrisponsive mode...with sharp punchy
> control....releasing
> > me to hang with the transients.... thats why I still hang on to the
> ol
> > eighty.....lol
> >
> > Max Fazio wrote:
> >
> > > Hi guys
> > > Just to share with you this fantastic discovery: I had a new look
> > > among the patents related to the GX1 and CS synthesizers and found
>
> > > u.s.pn 3636232 and u.s.pn 3784718 relating to the touch response
> cv
> > > circuit : the circuit acts as a double signal which encodes two
> types
> > > of signals going into the same output:
> > >
> > > 1. a so-called "touch responsive" signal which provides a cv on a
> > > level which could be both on amplitude and cutoff: the level isn't
>
> > > just flat but has a decay of 1.5 seconds and a peak slightly
> higher
> > > than the actual sustain level which becomes hearable when the
> level of
> > > the touch responsive signal surpasses the sustain-cutoff level.
> > >
> > > 2. a so-called "touch irresponsive" signal which provides a sharp
> AR
> > > envelope waveform which has a peak which is independent from the
> > > velocity and relates to the first , attack transient, providing a
> > > sharp , punchy amplitude cv to the controlled signal. Even though
> this
> > > AR envelope is able o raise its amplitude peak along with
> velocity
> > >
> > > The combination of the two produces a combined cv that acts to
> give
> > > the long sought after "natural" touch response: the AR of the t.i.
>
> > > signal stays quiet under the touch responsive signal under
> acertain
> > > velocity value, then , with high velocities it can raise up to a
> level
> > > higher than the touch responsive signal then decaying down to the
> > > touch responsive signal ( for itself the t.i. signal decays to 0
> but
> > > the combination of the two allows a kind of ADS(R) as the
> velocity's
> > > CV
> > >
> > > This solves the mistery about my long debated "plucked" response
> on
> > > certain presets.
> > > What do youthink of this discovery? could it be recreated as an
> > > encoder into a whatever keyboard??
> > > M
> > >
> > > [Non-text portions of this message have been removed]
> > >
> > >
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