The Synthex, OB-Xa and Matrix 12 seem to use the same CEM3320 filter chip:fmr wrote:Please, do something else. We already have two good emulations of the CS80. And I am evangelizing several developers towards the Oberheim Matrix-12 for ages. Since Xavier already created an emulaton of the Elka Synthex, which used the same VCF chip, he could very well consider take over the task at emulating the last dinosaur on earth that isn't yet recreated in softwareel-folie wrote: As you can see I need to have this plugin badly. Also no correct guesses show the quality of the V+. Apart from that would you consider a new take on the all mighty CS-80 with the quality of your expertise? That would be really really great...
http://www.electricdruid.net/index.php? ... fo.cem3320
The used CEM3320 chip seems to work more like a "filter building block" than like a fully intergrated filter. This is also one reason why the OB-Xa misses some filter modes of the Synthex.
It also looks like the 2-pole and 4-pole LPFs of the OB-Xa are implemented as two separate circuits while the Synthex multimode filter seems to use only a single CEM 3320 chip.
The use of the CEM3320 filter seems to be more like the combination of ICs and discrete filter designs (like e.g. in the OB-X filter) so the result in different synths should be difficult to comparable.
The Matrix 12 filter should be quite complex and uses a lot of different filter modes.
BTW the new upcoming "Uhbie" filter in U-He Diva will be based on the OB-Xa too AFAIK.
Ingo

