AW: Re[2]: Pitch -> CV conversion

[gstopp at fibermux.com]

     I think I tried that - the problem was, if there is no loop filter in 
     the CV to the PLL VCO, the CV looks quite complex on the scope and if 
     you just filter it to provide a DC average, then this will not cause 
     an external synthesizer to be anywhere near the PLL VCO in pitch. The 
     CV output must be the same as the PLL VCO CV.
     
     - Gene
     gstopp at fibermux.com


______________________________ Reply Separator _________________________________
Subject: AW: Re[2]: Pitch -> CV conversion
Author:  Haible Juergen <Juergen.Haible at nbgm.siemens.de> at ccrelayout
Date:    3/25/97 2:39 AM


>      best tracking and response happens when there is *no* loop filter at 
>      all (!) but the CV is un-useable for controlling an external synth. I 
>      ended up with a compromise between good tracking and clean CV.
     
Maybe if you put the filter outside of the loop, just into the CV output 
path,
you'd get best tracking and still a clean CV? As the filter would not be 
in the
loop anymore, it could be of higher order, i.e. a better compromise 
for audio frequency rejection vs. corner frequency.
Just guessing, really. Have you tried it?
     
JH