MOTM

> Even though there is no advantage sound-wise, I was just wondering
> technically why only the oscillator pulse and triangle waves can be used
to
> hardsync another oscillator to.  The sawtooth and sine don't work for that
> purpose.  How does the sync input know the difference?

The VCO wants a nice "edge" into the SYNC input. This is because the input
is AC coupled. That is why SYNC out is a very narrow pulse.


>
> I also found it amusing that I can run audio through the MOTM filters or
VCA,
> not by going through an audio input, but by going through an FM input.  I
> haven't bothered to look at the schematics, but I doubt that the audio is
> actually passing through.  Perhaps it's causing the filters or amp to
become
> a sound source itself.  Is that what's happening?

In the filters, you can "ring" it by messing with FREQ and RES. The VCA is
probably leakage.

Paul S.