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A-156 problem

A-156 problem

2011-12-14 by aletropdj

Hi.

My quantizer is crazy.
The connection i normally use is:

A155 > A156 > A110/A140

The problem is the pitch. the notes is not always the same.
If my patern is C,D,C,D; at some time change for C,D#,C#,D...

The gate not always trigger. at some time dont trigge one step.

What is the problem and how i can solve?

Thanks

AW: [Doepfer_a100] A-156 problem

2011-12-14 by yahoo@doepfer.de

> Hi.
>
> My quantizer is crazy.
> The connection i normally use is:
>
> A155 > A156 > A110/A140
>
> The problem is the pitch. the notes is not always the same.
> If my patern is C,D,C,D; at some time change for C,D#,C#,D...
>
> The gate not always trigger. at some time dont trigge one step.
>
> What is the problem and how i can solve?
>
> Thanks


I don't think that your A-156 is crazy. You describe a basic "problem" with
each quantizer that is not embedded into the sequencer. A quantizer regrades
incoming voltages and does not "know" anything about a sequence and the
notes/voltages of the sequence (you could use any voltage as input of the
quantizer). If the new incoming voltage is very close to the threshold
between two steps (e.g. D and D#) the output voltage may sometimes
correspond to D and sometimes to D#. This could be avoided only by a
quantizer that "knows" that during the last sequence there was a "D" at the
step in question and that he has to repeat this "D" because there is only a
very small difference between the new voltage and the voltage during the
last run.

To obtain this feature the quantizer would have to memorize the voltage of
the sequenzer step in question during the last run and compare it to the new
voltage. If the difference is less than e.g. 1/24V (half semitone) the same
output voltage is generated as during the last run. This is possible only of
a "supervisor" is available that memorizes the voltages of all steps during
the last run and compares it to the voltages of the next run. But as A-155
and A-156 are separate modules that's not possible. Only a sequencer with
built-in quantizer (like the Dark Time) could offer such a feature.

It's a bit difficult to understand but I hope I could explain the
A-155/A-156 behaviour.

Best wishes
Dieter Doepfer

Re: A-156 problem

2011-12-14 by aletropdj

:/

So I'll never have a solid sequence...
i will try again.



--- In Doepfer_a100@yahoogroups.com, <yahoo@...> wrote:
Show quoted textHide quoted text
>
> > Hi.
> >
> > My quantizer is crazy.
> > The connection i normally use is:
> >
> > A155 > A156 > A110/A140
> >
> > The problem is the pitch. the notes is not always the same.
> > If my patern is C,D,C,D; at some time change for C,D#,C#,D...
> >
> > The gate not always trigger. at some time dont trigge one step.
> >
> > What is the problem and how i can solve?
> >
> > Thanks
> 
> 
> I don't think that your A-156 is crazy. You describe a basic "problem" with
> each quantizer that is not embedded into the sequencer. A quantizer regrades
> incoming voltages and does not "know" anything about a sequence and the
> notes/voltages of the sequence (you could use any voltage as input of the
> quantizer). If the new incoming voltage is very close to the threshold
> between two steps (e.g. D and D#) the output voltage may sometimes
> correspond to D and sometimes to D#. This could be avoided only by a
> quantizer that "knows" that during the last sequence there was a "D" at the
> step in question and that he has to repeat this "D" because there is only a
> very small difference between the new voltage and the voltage during the
> last run.
> 
> To obtain this feature the quantizer would have to memorize the voltage of
> the sequenzer step in question during the last run and compare it to the new
> voltage. If the difference is less than e.g. 1/24V (half semitone) the same
> output voltage is generated as during the last run. This is possible only of
> a "supervisor" is available that memorizes the voltages of all steps during
> the last run and compares it to the voltages of the next run. But as A-155
> and A-156 are separate modules that's not possible. Only a sequencer with
> built-in quantizer (like the Dark Time) could offer such a feature.
> 
> It's a bit difficult to understand but I hope I could explain the
> A-155/A-156 behaviour.
> 
> Best wishes
> Dieter Doepfer
>

AW: [Doepfer_a100] Re: A-156 problem

2011-12-14 by yahoo@doepfer.de

My recommendation is to use the single step to adjust each note of the
sequence. Move the knob CW until the next semitone beyond the wanted tone is
generated. Then turn the knob CCW until the semitone below the wanted tone
is generated. Then turn the knob into the middle of these two positions.
Then you should be in the "center" of the right tone and no toggling (e.g.
D/D#) should occur. I know that's a bit long-winded but it's a solution.

Best regards
Dieter Doepfer
Show quoted textHide quoted text
> -----Ursprüngliche Nachricht-----
> Von: Doepfer_a100@yahoogroups.com
> [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von aletropdj
> Gesendet: Mittwoch, 14. Dezember 2011 14:57
> An: Doepfer_a100@yahoogroups.com
> Betreff: [Doepfer_a100] Re: A-156 problem
>
>
> :/
>
> So I'll never have a solid sequence...
> i will try again.
>
>
>
> --- In Doepfer_a100@yahoogroups.com, <yahoo@...> wrote:
> >
> > > Hi.
> > >
> > > My quantizer is crazy.
> > > The connection i normally use is:
> > >
> > > A155 > A156 > A110/A140
> > >
> > > The problem is the pitch. the notes is not always the same.
> > > If my patern is C,D,C,D; at some time change for C,D#,C#,D...
> > >
> > > The gate not always trigger. at some time dont trigge one step.
> > >
> > > What is the problem and how i can solve?
> > >
> > > Thanks
> >
> >
> > I don't think that your A-156 is crazy. You describe a basic
> "problem" with
> > each quantizer that is not embedded into the sequencer. A
> quantizer regrades
> > incoming voltages and does not "know" anything about a sequence and the
> > notes/voltages of the sequence (you could use any voltage as
> input of the
> > quantizer). If the new incoming voltage is very close to the threshold
> > between two steps (e.g. D and D#) the output voltage may sometimes
> > correspond to D and sometimes to D#. This could be avoided only by a
> > quantizer that "knows" that during the last sequence there was
> a "D" at the
> > step in question and that he has to repeat this "D" because
> there is only a
> > very small difference between the new voltage and the voltage during the
> > last run.
> >
> > To obtain this feature the quantizer would have to memorize the
> voltage of
> > the sequenzer step in question during the last run and compare
> it to the new
> > voltage. If the difference is less than e.g. 1/24V (half
> semitone) the same
> > output voltage is generated as during the last run. This is
> possible only of
> > a "supervisor" is available that memorizes the voltages of all
> steps during
> > the last run and compares it to the voltages of the next run.
> But as A-155
> > and A-156 are separate modules that's not possible. Only a
> sequencer with
> > built-in quantizer (like the Dark Time) could offer such a feature.
> >
> > It's a bit difficult to understand but I hope I could explain the
> > A-155/A-156 behaviour.
> >
> > Best wishes
> > Dieter Doepfer
> >
>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>

Re: [Doepfer_a100] Re: A-156 problem

2011-12-14 by Florian Anwander

Hello


Am 14.12.2011 14:57, schrieb aletropdj:
> :/
>
> So I'll never have a solid sequence...
> i will try again.
> --- In Doepfer_a100@yahoogroups.com,<yahoo@...>  wrote:
>>> The problem is the pitch. the notes is not always the same.
>>> If my patern is C,D,C,D; at some time change for C,D#,C#,D...
The problem ist not the triggering, but the setting of the 
potentiometers on the A155. It may happen, that the potentiometer 
setting is quite exactly on the threshold between two notes in the 
quantizer. If now there is a slightest variation at the potentiometer 
(this can be by temperature, or a simple mechanical vibration), then the 
quantizer will "switch" to the next note. The only help is to adjust the 
sequencers potentiometers better.

The problem will be smaller the if you use the 1V range, and bigger if 
you use the 2V or 4V range at the A155.

This is not a fault of the A155, but is caused by the basic principle.
That is why the SND SAM16 does not use potentiometers, but stores the 
values digitally and selects the values with dial encoders.

Florian

Re: A-156 problem

2011-12-14 by aletropdj

Hi Dieter.

I try again today and use the pre-post and not pos-post and work perfectly...
I dont know what is the difference considering the glide is 0...




 

--- In Doepfer_a100@yahoogroups.com, <yahoo@...> wrote:
Show quoted textHide quoted text
>
> My recommendation is to use the single step to adjust each note of the
> sequence. Move the knob CW until the next semitone beyond the wanted tone is
> generated. Then turn the knob CCW until the semitone below the wanted tone
> is generated. Then turn the knob into the middle of these two positions.
> Then you should be in the "center" of the right tone and no toggling (e.g.
> D/D#) should occur. I know that's a bit long-winded but it's a solution.
> 
> Best regards
> Dieter Doepfer
> 
> > -----Ursprüngliche Nachricht-----
> > Von: Doepfer_a100@yahoogroups.com
> > [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von aletropdj
> > Gesendet: Mittwoch, 14. Dezember 2011 14:57
> > An: Doepfer_a100@yahoogroups.com
> > Betreff: [Doepfer_a100] Re: A-156 problem
> >
> >
> > :/
> >
> > So I'll never have a solid sequence...
> > i will try again.
> >
> >
> >
> > --- In Doepfer_a100@yahoogroups.com, <yahoo@> wrote:
> > >
> > > > Hi.
> > > >
> > > > My quantizer is crazy.
> > > > The connection i normally use is:
> > > >
> > > > A155 > A156 > A110/A140
> > > >
> > > > The problem is the pitch. the notes is not always the same.
> > > > If my patern is C,D,C,D; at some time change for C,D#,C#,D...
> > > >
> > > > The gate not always trigger. at some time dont trigge one step.
> > > >
> > > > What is the problem and how i can solve?
> > > >
> > > > Thanks
> > >
> > >
> > > I don't think that your A-156 is crazy. You describe a basic
> > "problem" with
> > > each quantizer that is not embedded into the sequencer. A
> > quantizer regrades
> > > incoming voltages and does not "know" anything about a sequence and the
> > > notes/voltages of the sequence (you could use any voltage as
> > input of the
> > > quantizer). If the new incoming voltage is very close to the threshold
> > > between two steps (e.g. D and D#) the output voltage may sometimes
> > > correspond to D and sometimes to D#. This could be avoided only by a
> > > quantizer that "knows" that during the last sequence there was
> > a "D" at the
> > > step in question and that he has to repeat this "D" because
> > there is only a
> > > very small difference between the new voltage and the voltage during the
> > > last run.
> > >
> > > To obtain this feature the quantizer would have to memorize the
> > voltage of
> > > the sequenzer step in question during the last run and compare
> > it to the new
> > > voltage. If the difference is less than e.g. 1/24V (half
> > semitone) the same
> > > output voltage is generated as during the last run. This is
> > possible only of
> > > a "supervisor" is available that memorizes the voltages of all
> > steps during
> > > the last run and compares it to the voltages of the next run.
> > But as A-155
> > > and A-156 are separate modules that's not possible. Only a
> > sequencer with
> > > built-in quantizer (like the Dark Time) could offer such a feature.
> > >
> > > It's a bit difficult to understand but I hope I could explain the
> > > A-155/A-156 behaviour.
> > >
> > > Best wishes
> > > Dieter Doepfer
> > >
> >
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
>

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