[sdiy] octave cat gate/cv problem

[jkjelec at comcast.net]

Hi All,
Hmm, I think the CAT has a funny circuit inside, which generates a trigger signal whenever the CV changes quickly, such as hitting a new(different) note.  This was done as a part of the "duophonic with 2nd note memory" feature that only the CAT has. Its been a while, but I remember that I found that I couldn't even inject a CV into the CAT which has wide vibrato, or a trill, without causing this ckt to fire off the ADSR unintendedly...could this have something to do with it?  I _think_ I had determined that in order to use a CAT properly via CV/Gate, this ckt had to be disabled.
Regards,
Kyle Jarger
http://www.jkjelectronics.com


-------------- Original message -------------- 

> Hi, 
> 
> I am working on a octave CAT. And the problem was that the adsr wouldn't run 
> proper on a gate and when you played the same note again it became quiet.. 
> 
> Well, the gate problem looked easy. It needed a -7 to +7 gate. Fixed that 
> and worked ok...until I hooked up the cv. Sustain stayed up and it sounds 
> like the adsr was repeating. Without the CV it was ok. Only diffence is: 
> this cv is buffered and the cat's cv isn't.. 
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