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: new pages for a143-1
> quad envelope/lfo and a143-3 multi vc-lfo modules!
> Date: Wed, 21 Jan 2004 11:22:47 +0100
> 
> Please forward
> 
> > -----Urspr�ngliche Nachricht-----
> > Von: selfoscillate
> [mailto:synaptic_music@yahoo.com]
> > Gesendet: Dienstag, 20. Januar 2004 12:55
> > An: Doepfer_a100@yahoogroups.com
> > Betreff: [Doepfer_a100] Re: new pages for a143-1
> quad envelope/lfo and
> > a143-3 multi vc-lfo modules!
> >
> > yes, a sum mix output with attenuator would be
> nice.
> > should still fit the 16 te width.
> > a nice third option for the ad/lfo switch would be
> > "triggered lfo", which means that the lfo only
> runs
> > when the gate input is high. another handy option
> > would be, that the gate input also works as a
> > retrigger input for the lfo.
> >
> > don't know if this is possible with the chosen
> design,
> > just some ideas.
> 
> We will see. I have to point out that due to the
> design (555 timer circuit
> used) the AD will in the 0...8V range (0 ... 2/3
> supply voltage) and the
> "LFO" in the 4V...8V range (1/3 ... 2/3 supply
> voltage). So I'm not sure if
> the sum will make sense. From my point of view AD
> summing is not as
> important as LFO summing. But in this case each LFO
> contributes a 6V offset
> (medium of 4V and 8V) to the sum output. The
> provisional calculation is
> based on the 555 timer circuit. To obtain an LFO
> without offset we would
> have to redesign the circuit completely (replace the
> 555 by discrete
> components with other features).
> For the Gate and Reset feature I will see if this is
> possible for the 555
> design.
> 
> 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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