Doepfer

> Do you mean, that the *knob* settings of A-149-1 affect A-149-2?
>
> Jari Jokinen

In any case the clock of the A-149-1 QRV section affects the A-149-2. I'm
not sure if the QRV knob setting and CV affects the A-149-2 too. This
depends if the A-149-2 are "pre" or "post" the gating function of the shift
register outputs. I'll have to ask Christian who wrote the firmware of the
A-149-1 if the gate outputs are affected of if the "raw" shift register
states are taken. A detailed description how the A-149-1 works can be found
on our website (A-149-1 info page).

Best wishes
Dieter Doepfer

A142 and A162 would do it.

I'll try a clock divider as well cause I don't have those modules
(first trigger : gate open / second trigger : gate close).

Best,

Pierre

--- In Doepfer_a100@yahoogroups.com, "Eyesaw" <eyesaw@...> wrote:
>
> Hello - I have a need for a circuit to convert triggers to gates. I
have found the Doepfer Trigger Delay created to wide a pulse.
Wondering if others need this process and if anyone knows a circuit to
address the issue.

> 
> Thanks -
> 
> Bill

> > Do you mean, that the *knob* settings of A-149-1 affect A-149-2?
> >
> > Jari Jokinen
>
> In any case the clock of the A-149-1 QRV section affects the A-149-2. I'm
> not sure if the QRV knob setting and CV affects the A-149-2 too. This
> depends if the A-149-2 are "pre" or "post" the gating function of
> the shift
> register outputs. I'll have to ask Christian who wrote the firmware of the
> A-149-1 if the gate outputs are affected of if the "raw" shift register
> states are taken. A detailed description how the A-149-1 works
> can be found
> on our website (A-149-1 info page).
>
> Best wishes
> Dieter Doepfer

I've got the answer from Christian. The CV of the A-149-1 QRV section does
not affect the A-149-2 outputs as the "raw" shift register data are taken
for the A-149-2. Only the clock of the A-149-1 QRV section triggers the
advance to the next state of the shift register.

Best wishes
Dieter Doepfer

Hello - I have a need for a circuit to convert triggers to gates. I have found the Doepfer Trigger Delay created to wide a pulse. Wondering if others need this process and if anyone knows a circuit to address the issue.

Thanks -

Bill

  ----- Original Message ----- 
  From: hardware@doepfer.de 
  To: Doepfer_a100@yahoogroups.com 
  Sent: Monday, May 05, 2008 9:30 AM
  Subject: AW: [Doepfer_a100] Re: A-149-2


  > > Do you mean, that the *knob* settings of A-149-1 affect A-149-2?
  > >
  > > Jari Jokinen
  >
  > In any case the clock of the A-149-1 QRV section affects the A-149-2. I'm
  > not sure if the QRV knob setting and CV affects the A-149-2 too. This
  > depends if the A-149-2 are "pre" or "post" the gating function of
  > the shift
  > register outputs. I'll have to ask Christian who wrote the firmware of the
  > A-149-1 if the gate outputs are affected of if the "raw" shift register
  > states are taken. A detailed description how the A-149-1 works
  > can be found
  > on our website (A-149-1 info page).
  >
  > Best wishes
  > Dieter Doepfer

  I've got the answer from Christian. The CV of the A-149-1 QRV section does
  not affect the A-149-2 outputs as the "raw" shift register data are taken
  for the A-149-2. Only the clock of the A-149-1 QRV section triggers the
  advance to the next state of the shift register.

  Best wishes
  Dieter Doepfer



   


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[Non-text portions of this message have been removed]

> Hello - I have a need for a circuit to convert triggers to gates.
> I have found the Doepfer Trigger Delay created to wide a pulse.
> Wondering if others need this process and if anyone knows a
> circuit to address the issue.
>
> Thanks -
>
> Bill

Actually it's not possible to convert a trigger into a gate signal in the
usual meaning as the trigger is a short pulse only but has no time length.
If you think about a keyboard the gate turns high when a key is operated
(and the short trigger pulse  can be generated at that time) and turns back
to low when it's released. If you have only a trigger signal the moment when
the gate has to turn low is not available from the trigger signal.

One way is to define the gate length e.g. by an additional control. This
applies e.g. to the A-162 trigger delay module. If you set the delay time to
zero the length control can be used to adjust the duration of the gate
signal that is derived from the trigger signal.

Best wishes
Dieter Doepfer

Dieter - We spoke before on this issue. I may have improperly set the A162 but as I remember even at the shortest of delay lengths it produced too wide a pulse.

Someone out there please test the 162 to see if it can properly trigger a gate input on say a 140 ADSR -

Thanks,

Bill



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[Non-text portions of this message have been removed]

> Dieter - We spoke before on this issue. I may have improperly set
> the A162 but as I remember even at the shortest of delay lengths
> it produced too wide a pulse.
>
> Someone out there please test the 162 to see if it can properly
> trigger a gate input on say a 140 ADSR -
>
> Thanks,
>
> Bill

The A-162 can be modified easily for shorter pulse width. All you have to do
is to replace the capacitor C2 (delay time) and C5 (gate length) by a
smaller one (default is 10uF). If you replace e.g. C2/C5 by 100nF the
shortest delay and lenght becomes 1/100 compared to the former value.

Best wishes
Dieter Doepfer

Thanks Dieter,

Bill

  ----- Original Message ----- 
  From: hardware@doepfer.de 
  To: Doepfer_a100@yahoogroups.com 
  Sent: Monday, May 05, 2008 12:42 PM
  Subject: AW: [Doepfer_a100] Tigger To Gate Circuit


  > Dieter - We spoke before on this issue. I may have improperly set
  > the A162 but as I remember even at the shortest of delay lengths
  > it produced too wide a pulse.
  >
  > Someone out there please test the 162 to see if it can properly
  > trigger a gate input on say a 140 ADSR -
  >
  > Thanks,
  >
  > Bill

  The A-162 can be modified easily for shorter pulse width. All you have to do
  is to replace the capacitor C2 (delay time) and C5 (gate length) by a
  smaller one (default is 10uF). If you replace e.g. C2/C5 by 100nF the
  shortest delay and lenght becomes 1/100 compared to the former value.

  Best wishes
  Dieter Doepfer



   


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