Indeed very intersting post
I'm quoting from the k-v-r forum:
- not possible to use the 'ring modulation' the same way : as it's not a 'ring mod' but an inter-modulation between the two oscillators. The insteresting thing with this system is that when pressing two keys, one osc get the low key pitch, the other the hi key. So that every 'chord' you make will get strange (in)harmonics.
if the synth is polyphonic, both osc of each voice has a fixed pitch, so you cannot get this nice effect.
Well yes, this is true. But it's linked to the duophonic mode which we do not support for the sake of polyphony. It has nothing to do with the implementation of the ringmodulation. Even if you cannot do the same as with the duophonic feature there are ways to achieve the same effect. You can use the ADSR envelope for modulating one of the OSCs, if you use velocity you will have similar sound with similar control over it. Pitch modulation from the S&H is the other way to go, although this delivers random sound.
- not possible to implement the auto repeat on the two enveloppes, nor to emulate the VCA behaviour (the odissey can output a sound even if no key is pressed)
This is also true, but we were able to implement the Envelope Repeat and Auto Repeat feature in a way, so that the most important cases work. To really understand there's a little bit of explanation needed. Repeat on the envelopes plays the envelope in loop at the speed of the lfo, with other words Gate Ons and Offs are produced by the lfo. Auto Repeat simply means that you do not have to press a key, it could also be seen as a manual sustain switch. Well the most important use of these features is that one envelope shapes the amplitude and the other shapes the filter in repeat. With Auto Repeat on the filter envelope it is posible to do pseudo delay and motion sounds. The release time of the amplitude envelope will determine how long the Auto Repeat on the other envelope is active. With Repeat on both envelopes and Auto Repeat activated the orignal would have sounded everly. That's where we had to go a different way, of course only because of the polyphony. So with Repeat on both of the envelopes Auto Repeat is deactivated - Repeat will only work when a key is pressed. I think with sustain pedals and with sequencers this is not much of a problem, because these can easily replace the need for an Auto Repeat. Nevertheless the most important case is supported anyway.
- about the 'drone mode' : i don't know what he is talking about.
Very simple: We left it away. Use sustain instead or set a note of the desired length in your sequencer.
Once you've accepted the fact the synth is polyphonic, you can accept any detail as beeing THE important thing.
It's a shame i don't have CW hardware, i'd really love to compare the two, particularly on this point.
In the Oddity, as soon as there is a 'loop' in the signal point, for example the mixer modulating the filter freq, the dsp is updated every sample, which seems quite accurate.
So this seems to be a sample based model. Well there still exist models that are more acurate, just like ours and analog synthesizers
I think this really comes to account with the modulations. Although that I cannot say what exactly happens, I have the fealing that this comes from aliasing in the modulation path, which of course blurres the modulation to a certain extend. We update more often and therefore have a more defined modulation.
BTW, i am not saying the Prodissey sounds bad (it seems to sound pretty good). Unfortunately i cannot test it for now, i'd like to answer a more important question : does it sounds like the original?
I'm also not the guy that want's to conclude that the Oddity is a bad synth. It certainly is a big step forward in the VSTi world and does a good job in making the people more aware of sound quality again. And to answer the question: Yes, except for the duophonic thing we really do sound like the original!
Best, Matthias.
Uncle E: Feel free to crosspost me again
