Great description, Moe. The only thing that I would add is that you
can use the SYNC of the controlling VCO instead of using the SQR or
SAW out if you need these for other reasons. The way to patch it is
simply connect a cable from one SYNC to the other SYNC and make sure
the controlling VCO's SYNC switch is not on HARD and the other VCO's
SYNC switch is on HARD. It's a neat feature of the MOTM VCO that
preserves the SQR (or SAW) outs of the controlling VCO if you want to
use them in the patch, too (And don't have a MULT).
Mike
--- In motm@yahoogroups.com, "mate_stubb" <mate_stubb@y...> wrote:
> --- In motm@yahoogroups.com, Jason Proctor <jason@r...> wrote:
> > despite doing it easily on my voyager and pro one etc, i've never
> > managed to figure out the deal with oscillator sync on MOTM. can
> > someone post a simple osc sync sweep patch so i get it? thanks.
>
> Make a standard 2 VCO voice patch - VCOs -> VCF -> VCA, your kbd
> controls both VCO pitches, and gates two EGs. EG1 patched to VCA
> control, EG2 patched to VCO2 FM in. Exp or Lin, doesn't really matter
> although Exp will probably give you a wider sweep.
>
> Patch another output of VCO1 to the sync input of VCO2. It's best if
> you use pulse or saw out of VCO1 for this. Set sync switch on VCO2 to
> HARD.
>
> The tuning of VCO1 will control the perceived pitch of the sound. The
> tuning of VCO2 will control the sync "growl". VCO2 will be tuned a
> couple of octaves higher. Grab the COARSE knob for VCO2 and sweep it
> and you should hear the characteristic hard sync sound.
>
> To automate that, turn up the FM input to feed some envelope sweep to
> the pitch of VCO2.
>
> That's all there is to it!
>
> Moe