Diva DCO not phase locked?

[hakey]

Load 'INIT Alpha' with the following settings:

- select the sawtooth wave and deselect pulse
- Detune Amt 0, Voice Drift 0
- voice stack to 2 with the second voice tuned exactly one octave above the first

Play a note and notice that the two voices drift in and out of phase (the oscilloscope confirms this).

Does this replicate the behaviour of the real thing?

Either way, it would be nice to have the option to phase lock the octaves as per string machine divide down oscillator behaviour.

[Kriminal]

Osc phase sync is in latest beta...hidden away in trimmers or mods...cant remember where

really needs to be a simple on/off switch in osc section

[hakey]

Osc phase sync is in latest beta...hidden away in trimmers or mods...cant remember where

Presumably later than Rev1973?

really needs to be a simple on/off switch in osc section

That works for me.

[Kriminal]

Im at work so dont know the rev # but its been there a while...i guess latest public beta should have it?

[Urs]

Original DCOs are phase locked, but to a 1,98 MHz Clock, divided down by two counters. The resolution of the DCOs is so that lower octaves hit the desired frequency more precisely and thus playing two notes an octave apart has some beating.

To obtain exact tuning we would have to do a .tun file and set all drift/voice settings to zero. We haven't done that tune file yet, because it wasn't necessary for a realistic enough feel.

[pdxindy]

Osc phase sync is in latest beta...hidden away in trimmers or mods...cant remember where

Presumably later than Rev1973?

It's been there for quite a while... and it works for any of the osc models

[hakey]

Original DCOs are phase locked, but to a 1,98 MHz Clock, divided down by two counters. The resolution of the DCOs is so that lower octaves hit the desired frequency more precisely and thus playing two notes an octave apart has some beating.

Okay, so that's true to the behaviour of the source synth. Fair enough.

We haven't done that tune file yet, because it wasn't necessary for a realistic enough feel.

I only noticed whilst trying to emulate a Solina type string synth. And for that, afaik (at least, according to various discussions on the subject), you really need hard phase lock.

It's been there for quite a while... and it works for any of the osc models

That's phase reset, not phase lock.

[Kriminal]

sorry, i was taking about osc phase rest, not lock, and it is indeed hiiden away in Transient Mode drop down menu

[hakey]

To obtain exact tuning we would have to do a .tun file

So, how would I go about doing this?

[Urs]

To obtain exact tuning we would have to do a .tun file

So, how would I go about doing this?

Measure the pitch of each note of a Juno 60 and write it down in a .tun file. It's tedious work.

[hakey]

To obtain exact tuning we would have to do a .tun file

So, how would I go about doing this?

Measure the pitch of each note of a Juno 60 and write it down in a .tun file. It's tedious work.

Hmm... unless I'm missing something, I don't want to replicate the exact, imperfect phase-lock tuning of a Juno.

Is there a way, .tun file or otherwise, for me to replicate the 'perfect', non-smeary, between-octave/interval phase-locking behaviour that a string machine such as a Solina supposedly exhibits?

[Urs]

To obtain exact tuning we would have to do a .tun file

So, how would I go about doing this?

Measure the pitch of each note of a Juno 60 and write it down in a .tun file. It's tedious work.

Hmm... unless I'm missing something, I don't want to replicate the exact, imperfect phase-lock tuning of a Juno.

Is there a way, .tun file or otherwise, for me to replicate the 'perfect', non-smeary, between-octave/interval phase-locking behaviour that a string machine such as a Solina supposedly exhibits?

Oh that... no, there isn't.

[hakey]

Is there a way, .tun file or otherwise, for me to replicate the 'perfect', non-smeary, between-octave/interval phase-locking behaviour that a string machine such as a Solina supposedly exhibits?

Oh that... no, there isn't.

Okay.

I know this won't be high up the FR list (probably won't make it at all) but here's a request for a string synth style DDO in Diva.

[Urs]

[hakey]

Haha.

Well, here's my last word on the subject: take that 3 band resonator that was going to find its way into Z3 and turn it into a Diva module or effect, add a dual oscillator DDO and paraphonic mode, and that's string machines and the Polymoog covered.