Doepfer

--- Dieter Doepfer <hardware@doepfer.de> wrote:
> From: "Dieter Doepfer" <hardware@doepfer.de>
> To: "Bakis Sirros" <synth_freak_2000@yahoo.com>
> Subject: AW: [Doepfer_a100] Re: more news about the
> a154 and other modules from doepfer.
> Date: Fri, 16 Jan 2004 16:17:12 +0100
> 
> Please forward ...
> 
> > -----Urspr�ngliche Nachricht-----
> > Von: Tommy DOG [mailto:mrsvomit@tommydog.com]
> > Gesendet: Donnerstag, 15. Januar 2004 20:57
> > An: Doepfer_a100@yahoogroups.com
> > Betreff: [Doepfer_a100] Re: more news about the
> a154 and other modules
> > from doepfer.
> >
> >
> > --- In Doepfer_a100@yahoogroups.com, Bakis Sirros
> > <synth_freak_2000@y...> wrote:
> > > dieter says:
> > >
> > <Snip>
> > >" to emulate the
> > > behaviour of the original Buchla module it is
> true
> > > that 2 separate shift registers are the right
> solution.
> >
> > This Isn't clear whether this was an oversight in
> design or a
> > mistake that should be corrected.
> 
> It depends upon the point of view. You could call it
> another feature or a
> mistake whatever you want. We knew that the Buchla
> uses two shift registers
> but we were of the opinion that it is not necessary.
> So we did not oversee
> that but believed that the version with one shift
> register is an equivalent
> solution. It was no problem to introduce a second
> shift register and so we
> did it (even though we think that it is not
> necessary, simply two different
> types of random sequences appear but one could not
> say that one is better
> than the other, that's the basic of random - or
> better pseudo-random as the
> Buchla approach - like any approch with feedback
> shift registers - is only
> pseudo-random in contrast to "real" random like the
> A-118 or other
> semiconductor noise based designs).
> 
> To have a 100% copy of the Buchla module 2 shift
> registers are required. But
> to have only one shift register that is triggered
> from both clock sources
> creates also random voltages but a little bit
> different as each register is
> triggered by its own clock. From our point of view
> the version with one
> register is "more random" as both clock sources
> cause an advance to the next
> state.
> 
> > Is this a adjustment that users can make?
> 
> The shift registers are made with a PIC
> (microcontroller). So it depends
> upon the PIC in the module which version is
> included. We could try to start
> a competition (like wine tasting): test two A-149-1
> and find out which is
> the version with one and which the version with 2
> shift registers (of course
> with the corrected rising edge trigger) :-)
> 
> Best wishes
> Dieter Doepfer
> 
> 


=====
Bakis Siros
Parallel Worlds / Polariton
Athens-Greece
[Doepfer_a100] group owner
http://www.rubber.gr
http://www.ward12.com

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Regarding Dieter's comments about the 149-1.

I am happy to bow to his and maybe Christian's judjement as to whether their choice is "more" random and less of an 
attempt to clone Don Buchla's SOU module. My comment's were directly at whether this was a mistake or choice. In truth I 
love the module and am very eager to see #2, 3 and whatever else it will be. In fact I am sorry my poll was worded the way it 
was because I believe  it doesn't relect how interested people are in this group. Perhaps a better poll....

Personally, I would like to have a full rack of modules aimed at chance composing with which I could use chance instrument 
patches and sequences.  

Best,
TD