Doepfer

> Hello Dieter
>
> > A-189-1:
> > ext. clock input for the sample rate (instead of the voltage controlled
> > sample rate)
> I'd not say "instead of voltage control", but there should be an
> additional insert point.
>
> > additional VCA at the signal input to modulate the incoming
> signal before
> > it's processed by the bit modifier
> If it is not cost relevant this would be a nice addendum.
>
> Florian

Hi Florian,

I'm not sure if this is possible and have to discuss it with Christian. So
far the sample rate is software generated and the voltage applied to one of
the ADC inputs is used to define the sample rate. This is totally different
(hard/software) from an external clock. Maybe we can divide the software
into two different independent tasks: one for the VCO with the clock output
at a separate pin and another task for the actual bit modifier software. The
first task has to output the clock at one of pins of the microcontroller.
This pin is normalled via a jack socket to another pin that is used as clock
input. This socket can then be used as an input for the external clock too.
But I'm not sure if this will work (i.e. if the two software task do not
interfere with each other). Christian will have to decide if this could
work.

Another solution would be an additional switch that switches between CV mode
and clocked mode (or 8 CV and 8 clock modes). The socket could be connected
to two pins simultaneously (ADC input and a fast clock input) and the
software decides depending on the switch position if the ADC input (CV mode)
or clock input (clocked mode) is used.

The additional VCA will be included only if it can be realized by software
(i.e. by a simple multiplication). The microcontroller we use has a
multiplication instruction that requires only one cycle.

Best wishes
Dieter