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Re: AW: AW: [Doepfer_a100] Shift Register

2011-08-01 by Denis Gökdag

Dieter,

say we have 4 vcos and a 4-stage ASR. We feed the VCOs a melody like A-C-D-E

On the A-152, we would see (A 0 0 0) (A C 0 0) (A C D 0) (A C D E) etc
On an ASR, we would see (A 0 0 0) (C A 0 0) (D C A 0) (E D C A) (A E D C) etc

You are right in that after one cycle, we will have the 4 voltages available simultaneously. BUT you are wrong in assuming that the VCOs will all be the same. Imagine 4 mono synths with completely different sounds. On the A-152, each synth will *stay on the same note* in this example. On the ASR, each synth will be playing the melody, but delayed by one step. Big difference.

Or lets say we have a 3-step melody, A-C-D, running into the same setup.

A-152: (A 0 0 0) (A C 0 0) (A C D 0) (A C D A) (C C D A) (C D D A) (C D A A) etc
ASR: (A 0 0 0) (C A 0 0) (D C A 0) (A D C A) (C A D C) (D C A D) etc


I hope this clears it up a bit.

Denis



On Aug 1, 2011, at 1:01 PM, <yahoo@doepfer.de> wrote:

> > Dieter,
> >
> > the main point of the ASR is that one very clock pulse, you get a
> > different value on *all* outputs, with all outputs with a number
> > greater than 1 showing the "history" of the input CV. The A-152
> > will hold the last value on each destination defined at the point
> > that that stage became inactive. So the output value of a stage
> > is updated only when it becomes active. Very different from an ASR.
> >
> > One usage example of an ASR is routing a melodic CV sequence to a
> > number of VCOs --- think "canon": the same melody played by all
> > vcos with one sequence step delay between them.
> >
> > Actually I think that an AD/DA based ASR with quantisation
> > options and perhaps 8 or even 16 stages & outputs could be a very
> > successful module.
> >
> > Best,
> > Denis Goekdag
> 
> Denis,
> 
> I still have problems to understand the audible difference in case of e.g.
> three VCOs. The only difference between the A-152 and an ASR is that the
> "history" CVs are available at different outputs. In case of an ASR the
> "history" voltages are shifted to the next CV outputs. In case of the A-152
> they remain at the same CV output. But from my point of view this does not
> make an audible difference (unless you insert e.g. slew limiters between ASR
> CV Out and VCO CV In) as the three CV output voltages are the same. They
> only appear at different sockets. If the VCOs are equivalent this should
> make no difference. please correct me if I'm wrong.
> 
> Dieter
> 
> 



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