Doepfer

hello levka,
4bits would make 16 different combinations/values
(notes, in our case?), and 6bits would be 64 different
combinations/values. (its all powers of 2)
regards,
Bakis.




--- levka0 <levka@dds.nl> wrote:

> 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
> >
> 
> 
> 
> 
> 
> 


Bakis Sirros - Parallel Worlds
[Doepfer_a100] group owner
http://www.parallel-worlds-music.com
http://www.myspace.com/parallelworldsmusic
http://www.shimarecords.co.uk
http://www.rubber.gr
Athens-Greece

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