[sdiy] Saw vs Triangle Sync

[Cynthia Webster]

Hi David!

Well the ZO isn't just a through-zero vco, it is also a triangle core 
with variable sync, and
"time reversal", (changing of direction) VCO.  The Zeroscillator 
presently has both of these
 features mentioned, as opposed to a hypothetical "what if?" context.

I always think it's neat to sync your main oscillator with a higher 
frequency auxiliary VCO and
then tune that auxiliary VCO until it scrunches-up all the harmonics to 
a very high note.

You can play or pick off different harmonics by varying the sync input 
attenuator knob of your
main output oscillator, (the one you're listening to as opposed top the 
auxiliary one).
I'm just talking about sync here no cv modulation between VCOs,  and not FM.

If you intercept that modulating cable to the main VCO with a DC coupled 
VCA or a
DC coupled Low Pass Gate... then you can play melodies with the 
different harmonics
by varying the VCA, (sounds a bit like an harmonic quantizer as opposed 
to VC one).

Call it Sync Modulation or SM?

I don't know if you can do this with other variable sync designs, but it 
is fun!


Cynthia







David G. Dixon wrote:
>> I would think the ability to choose between "Reset waveform" sync and
>> "Change direction" sync would only be available with a Tri core. Yes?
>> No? Tim (not sure whether I should be undecided... or not) Servo
>>
>> Can you say "Zeroscillator...?" :)
>>     
>
> You wouldn't need a TZ-VCO for that, but a TZ Sawcore a la Ian Fritz would
> give the option of triangle-like sync because the saw can change direction
> (a very triangular thing to do, so they tell me...)
>
>
>