Fantom-G

No Osc (WG) Sync

No Osc (WG) Sync

6 Dec 2010, 10:54
Let me know if im wrong but, on the G theres no OSC sync ? Why !! Rooolllaannnnddd!

Re: No Osc (WG) Sync

6 Dec 2010, 10:57
It's a sample-based synthesizer, not a virtual analog synthesizer. To have sync, you need to have free-running math-modeled oscillators.

Re: No Osc (WG) Sync

7 Dec 2010, 05:40
Art, thanks for the info, still a shame thay dont have one, would be great with the step modulator. I didn't think sync would differ too much from ring modulation...

Re: No Osc (WG) Sync

7 Dec 2010, 06:55
Sync is completely different from ring modulation. Ring modulation multiplies two input signals, sync resets one oscillator according to the phase of another.

Re: No Osc (WG) Sync

9 Jan 2011, 17:10
Litlte offtopic old Roland jd series (i dont remember number) surely have sync
also Kurzweil k-series i think have this feature even for samples if i understanded correctly.and i talk hard sync. soft sync is rarer.which if waveform goes / changes it to \. and my example is for saw. and i cannot describe better this thing... and i post this becouse someone says you need modelled oscillators this is not true...

Re: No Osc (WG) Sync

9 Jan 2011, 17:30
I didn't say this is not possible, it's that unlike with an oscillating waveform you would get clicks to deal with, and I don't know any modern sampler that has this feature. Kurz's K series have VA oscillators by the way, too, as I know.

I do think that if you want VA technologies, you shouldn't start looking for them in a sample-based instrument.

Re: No Osc (WG) Sync

9 Jan 2011, 18:06
Artemiy:

The ESQ1, which used digital waveforms that were burned onto a chip. It had oscillator sync. I don't know whether they had some way to do that using an analog circuit, but it definitely had it. And this was back in 1986, long before computers were fast and cheap enough to handle it using analog modelling. So, it can be done without algorithmic processing -- it just might take something that Roland is unwilling to implement on their products, citing its expense.

And it could be expensive. The ESQ1 also had 8 Curtis analog filters -- something that, by today's standards, is a luxury.

- Sammy

P.S. And you are close in your assessment with respect to the Kurzweil synths. They actually use DSP algorithmic processing to get hard sync, along with every other synth "effect" that they can accomplish. This includes all filters. I do know about this -- I worked at their R&D plant in Waltham for about two and a half years.

:)
Yes we did.

Re: No Osc (WG) Sync

9 Jan 2011, 19:09
I've always been confused a bit by OSC Sync, probably because I don't have a proper analog synth sitting here. In particular I wonder how it accomplishes wave sync, I know what it does, but even more often I think... isn't it used to compensate for phasing associated with analog 'drift'?

Doesn't that make it somewhat obsolete on a sample based instrument? Atleast if you are layering the same sample, the waveform start/sync/phasing would always be the same.

Furthermore, samples always stay in tune.

I know I'm missing something, so hopefully someone can elucidate me on the mysteries of sync. It certainly sounds interesting.

If you can do that, maybe we can spin this off into a tutorial on FXM.

:-$

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