I think you've misinterpreted him to a degree, its not the output thats being approximated in some circumstances but the math behind some of the circuits that end up being quite resource expensive when added into the whole (such as a resistor that shows up on a board 32 times, etc) it just kills performance all together. When they've chosen to approximate whatever within a circuit its still been based on the non-realtime models and the analyzation of said circuit. That said, obviously theres judgement involved in some of the process as he stated.. and im sure that you're right that in some cases in the final output stage that signal approx. is taken into account... but since they're arent out to create recreations but new synths (so far anyways) it doesnt seem thats too important to them atm.nvbrkr wrote:From what I can pick up from that, that doesn't mean they have simulated all the components themselves. It still seems to rely on approximations of the overall output. It's not terribly clear either how the "most important parts" of the circuit should function correctly in the "virtual model" if you're not doing the rest as well. However, if these guys aren't doing that now - how likely is it that Arturia were doing anything of the kind with their old Minimoog / CS-80 emulations?"DCAM is a set of approaches, technologies, knowledge and experience, rather than one hard-and-fast platform. To grossly oversimplify things - we use QUCS (basically the same thing as SPICE) to analyse the circuits, then build mathematical approximations to those that will work in a realtime, discrete context. We of course refer to the actual circuit itself, as well as the schematic and the model, to make sure everything tallies. There is a certain amount of judgement involved as to which parts of the circuit, or which of its behaviours, are most important to the sound, as even with modern CPUs it's not possible to make a perfect model work in real-time at 44K. Yet."
I read some better interviews after namm 09 with the lads where they explain their methods in greater detail but I'm having a hard time digging one up.. only thing I can really find atm is a meh SoS article and promo youtube video (which isnt actually half bad if you skip to the middle)..