More about 3310 and envelopes #2

[Theo]

From: Magnus Danielson <cfmd at swipnet.se>


> From: Haible Juergen <Juergen.Haible at nbgm.siemens.de>
>
> > The OB-8 has no velocity, so there is no such problem.
> >
> > But you're raising a most interesting question: How *should* the
envelope
> > of a retriggered voice behave when the new velocity value is lower than
the
> > "remaining" amplitude from the previous note ?
> >
> > Not easy !
>
> Certainly. Tony had some trouble in clarifying for everyone what the
> problem really was about.
>
> > Consider the *same* note is struck again for that voice: Should the
> > amplitude
> > jump back abruptly to the new value, or should the maximum of both
values
> > be valid, or should the sustaining ("releasing") note dominate ? Or
should
> > the tiny amount of the low velocity note be *added* to the sustaining
> > previous note ?
> > When a vibrating Guitar String is plucked again, I guess it will stop
> > vibrating
> > as long as the finger touches the string. (?)
> > When the reed of an electric piano is hit with the damper open, some
> > of the newly applied energy might add to the sustaining note's energy
> > I suppose. So there is no general solution.
>
> Right. I agree. There are many solution to this dilema but the worst
> solution is to avoid looking at it since then you migth totally miss
> the train and loose the note or something.
>

Ok now i get what Tony was after.
My full cycle solution may be not relevant here.

> > Now think of the new note assigned to that voice being different to the
> > previous one. Say, the voice is sustaining at C with a momentary level
of
> > 70,
> > and a D# with an initial level of 30 (lower velocity) is bound to
replace
> > that C.
> > I'd say the big question is not *how* that note should be replaced (in
terms
> > of level), but *if* it should be replaced under these conditions at all
!
> > Replacing a loud note with a soft note abruptly is a striking event
> > regardless
> > how you do it.

Agreed, but then again, a striking event is what music brings to live.
Playing a soft note to replace a load one is a choice of the performer,
not a technical problem or error.
How you replace the note is certainly interesting as it influences the
character of the instrument.

>
> Should one has a "fade-to-new-note-time-constant" possibly? Basically
> acting as a decay when you do a retrigger before the decay/release is
> below the velocity of the new note on that voice.
>
A kind of velocity "portamento", sound like a real good idea!
But only when you play legato = no retrigger.

> Should one possibly just jump over the attack and go straight for the
> decay phase?
>
Some analog adsr do this at long release settings,
effect sound like there is no retrigger.
I rather control this by the way I play.

Just my, personal preference o'cause. :)

> Cheers,
> Magnus
>

Cheers,
Theo