RE: [Doepfer_a100] Re: ideas/opinions on quantizer and (VC) arpeggiator
2006-05-18 by David Salter
Where ever possible I would prefer to always have the option of CV/gate. I don't use midi much as I find the 128 step quantising very limited. Rgds David David Salter Senior Project Manager Reuters Ltd Tel +44 20 7542 2402 Mob +44 7990562402 email david.salter@reuters.com RM david.salter.reuters@reuters.net ________________________________
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From: Doepfer_a100@yahoogroups.com [mailto:Doepfer_a100@yahoogroups.com] On Behalf Of Dieter Doepfer Sent: 18 May 2006 12:44 To: Doepfer_a100@yahoogroups.com Subject: AW: [Doepfer_a100] Re: ideas/opinions on quantizer and (VC) arpeggiator 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! 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