Would I also need an analogue switch here?
--- In korgpolyex@yahoogroups.com, Michael Hawkins <korgpolyex800@...> wrote:
> Hmmm, I think I went off a little half set up on this.
> The EG3 signal is software inserted into VCF cutoff. So you would have to accept setting EG3_INT to something above 0 (such as 1-15) and then picking up the AC signal on pin 1 of IC7 (NJM2902). You would best do this by decoupling the signal using a small value cap (<100pF) and using protection diodes of course. That would pick up the spike from the EG3 signal while ignoring the DC VCF level.