Doepfer

Dear Dieter, Florian, Bakis, David ....
Personally, I would prefer a "simple" approach as follows:


-midi-in and -thru (to be able to link more units ... )

-cv and gate out 
(with PCB-mounted dip switch to be able to drive the internal system bus)

-control pot & cv in for gate-out length

-three-way switch & cv in for octave range

-control pot & cv in for the note order cq. buffer readout order.
(according to Florian's earlier suggestions; 
for the latter, a memory function + two-digit LED readout (like on the
A-107) could be a nice extra but not essential.

-mabe also a cv-controlled clock divider/multiplier for the gate out?

I agree that a separate "mini-keyboard" (like on the TB-303) might
look sexy, but I doubt that it would sell very well, and I think that
in any case, a midi-input would make it most versatile for a wide
range of users.

Best regards,
Joost






--- In Doepfer_a100@yahoogroups.com, "Dieter Doepfer" <hardware@...>
wrote:
>
> Sounds interesting for me too. How should the input of the notes be
> managed - if not via Midi (e.g. with several CV inputs)? Or is Midi
the only
> option from your point of view ? Or a separate keyboard just for this
> function (e.g. with small buttons only, like the buttons used in the
A-107
> or A-113) ?
> 
> Best wishes
> Dieter Doepfer
> 
> > -----Ursprüngliche Nachricht-----
> > Von: Doepfer_a100@yahoogroups.com
> > [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von levka0
> > Gesendet: Mittwoch, 17. Mai 2006 20:39
> > An: Doepfer_a100@yahoogroups.com
> > Betreff: [Doepfer_a100] Re: ideas/opinions on quantizer and (VC)
> > arpeggiator
> >
> >
> > Many thanks Florian !
> >
> > This is a very clear explanation to me.
> >
> > So for a 6 bit buffer, 32 adresses would be scanned an their order
> > could be remapped according to a certain control voltage ?
> > Reminds me of a wavetable.
> > Instead of the usual up/down/up+down order, this would mean an almost
> > infinite number of patterns (that is, if all 32 adresses are filled)
> > Probably 4 bit (8 notes ?) should be enough and would keep this
> > feasible regarding the number of possible sequences.
> >
> > I think this could be a very interesting & exciting concept for a
module.
> >
> > Best regards
> > Joost
> >
> >
> >
> >
> > --- In Doepfer_a100@yahoogroups.com, Florian Anwander
> > <Florian.Anwander@> wrote:
> > >
> > > Hi Levka
> > >
> > > > I do not yet understand completely what Florian means by this;
> > > > Florian; Could you perhaps elaborate a little on this ?
> > > Ok, but it will be a little bit longish...
> > >
> > > Originally an arpeggiator as in Roland Jupiter Series, in SH101
or in
> > > the Korg Monopoly/Polysix was a simply "misusage" of the keyboard
> > > scanning electronics. The keyboard of these synths is like a matrix
> > > scanner. The electronics send addresses (usally 6Bit) in a certain
> > order
> > > to this matrix, read the data (=pressed keys) from this matrix
into a
> > > buffer, and distribute these (key-)data from the buffer to the sound
> > > generation.
> > >
> > > Usually this reading from the buffer is very(!) fast (at some
hundered
> > > kHz rate). For arpeggiating the buffer is simply read slowly at the
> > rate
> > > of the (internal or external) clock of the arpeggio.
> > > So at each trigger of the clocksignal provides the next key data
to the
> > > sound generation.
> > >
> > > For up, down, up/down arpeggios you simply change the way the
matrix of
> > > the keyboard is addressed. whether the adresses are counted up
or down
> > > or....
> > >
> > > This is the classic arppeggio function in basic.
> > >
> > > Now you may imagine, that it would be great to have influence on the
> > > address data of the keyboard scanner. Example: normally the order of
> > the
> > > notes are
> > >   adresse 000 001 010 011 100 101 110 111  (order= a0 a1 a2)
> > >   notes    c   c#  d   d#  e   f   f#  g
> > > If I press a c-major the order of the notes in the buffer will be
> > > "c e g". A c-sus9 will be "c d f g"
> > >
> > > Now i simply invert adress a1:
> > >   adresse 010 011 000 001 110 111 100 101
> > >   notes    d   d#  c   c#  f#  g   e   f
> > > Now the order of the notes in the buffer (and the order of an
arpeggio)
> > > will be "c g e". The c-sus9 is now "d c g f"
> > >
> > > You see that a simple conversion of the address data does create
> > > complete new arpeggio patterns. Imagine what is possible, if you do
> > such
> > > conversion depending on other sequencings, on states of some
> > > controlvoltages or what ever...
> > >
> > >
> > >
> > > I know, that a MIDI based arpeggiator system would have to simulate
> > > this, but I think, it would be worth the effort :-)
> > >
> > >
> > >
> > > Florian
> > >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
>