From: Bob Grieb <bobgrieb@yahoo.com> Date: 2014-03-02
Hi,
In the description of the MG-1 Radio Shack/Moog synth, they discuss the need for "high frequency compensation". This has to do with the fact that in the oscillator, usually they allow a fixed time for discharging the main integrator cap, whereas the charging time varies with frequency. So at higher frequencies, the discharge time becomes significant and the pitch is too low. I wonder if the opto-coupler circuit corrects for this in the P6.
Bob
From: Malte Rogacki <gacki@gacki.sax.de> To: PolySix@yahoogroups.com Sent: Sunday, March 2, 2014 2:13 PM Subject: Re: [PolySix] RE: Polysix tuning difficulties.
I wrote my last reply, sent it, checked my mail and there was your description of the same circuit, just much better.