The difference between digital and analogue gear is that the imperfections in analogue gear make them interesting. i.e. instabilities in VCOs, the addition of harmonics etc. I am a big, big fan of old analogue gear and so I am definitely in the camp of 'we're not there yet' with the emulation of analogue gear.
But, the idea that a digital signal can't replicate it, is nonsense, because obviously an analogue signal can be recorded digitally and perfectly played back. This is often the myth that is propagated, that the 'stair steps' somehow mean a loss of fidelity.
Interestingly, and relevant to this discussion, I am yet to find any digital plugin that manages to do saturation properly. Plugins are often, seemingly, just using random number generators, rather than anything more complex (like the AI models you link to); Nothing comes close to my Thermionic Culture Vulture, or any of my other valve based equipment at creating that 'fatness'.
I think that the AI approach is interesting, it does make me wonder how far we're willing to go to reproduce this in software, when the real thing is a handful of wires, resistors, capacitors, and transformers. It seems like trying to implement the ARM instruction set in Javascript. How much processing would a simple saturation plugin need? How many could one computer run?
Something like U-He Diva for example can sound as analog as anything analog that I've heard. Then if you get into wavetable or granular, you can get sounds that are impossible to achieve with analog, which are in my opinion very "rich and interesting".
I suspect that the people who don't agree may have heard a digital synth many years ago and are unaware that the technology has improved markedly since then, which isn't surprising because there's a lot of money in it.
Just my opinion, but modern analog emulation sounds just as good as real analog.
Nothing wrong with enjoying the workflow of analog though, although personally I dislike that workflow.
Perhaps, for relatively simple sounds, or sounds that have little movement. But, the moment there's any filter movement then it's obvious. The filter really is the key, I think, when a digital synth outs itself. Often there's a 'digital edge' to filters on digital synths that don't come close to the 'smooth destruction' that happens in the analogue realm (really, really hard to describe with words!). But, in A/B tests between digital repros of classic synths and the classic synth, that's nearly always where I can hear the difference. But, it's also a major difference, because often the 'sound' of an analogue synth comes from its filter.
If you're looking for that stand out sound for a track, the one everyone goes "I love the track with that noise in", then analogue is where it will come from, the quickest and easiest.
This obsession with replicating the analogue sounds in software is really tedious though. I prefer digital synths that do stuff that the analogue synths can't do, like Omnisphere - nothing touches that, and it's a perfect compliment to the real analogue sounds. Let's keep the analogue realm, doing what it does best, and then let's advance the possibilities within the digital realm, looking forward rather than back.
The point I was trying to make is that I feel that digital is definitely good enough to do professional-sounding "analog" performances without people going, "definitely sounds digital" - unless digital is the sound you're trying to achieve.
>If you're looking for that stand out sound for a track, the one everyone goes "I love the track with that noise in", then analogue is where it will come from, the quickest and easiest.
I disagree, but I also recognize that nobody will "win" this discussion, because it's a matter of taste - like asking for a consensus on which tastes better, chicken or fish.
You enjoy your analog synths, and I'll enjoy badly playing my digital synths. I'm more of a modern wavetable fan than analog sound anyway.
We're both music lovers - nobody's forcing anyone to use anything.
Statements like this need to be prefaced with qualifying disclaimers, like "IMHO". You have to accept that your opinion is completely subjective. I've seen a variety of blind tests over the years in which listeners were unable to differentiate between analogue hardware and digital simulations. I've become increasingly impressed with the quality of virtual synthesisers over the years. At this stage, while I do still often prefer to use my analogue synths over the VSTs I own, that's mostly because the hardware is simply more fun to experiment with.
You're right in the strict sense about analog random bias being hard to reproduce, but those are largely irrelevant when it comes to the important characteristics of the sound. In an A/B test, it is impossible to distinguish a well designed digital audio simulation from a real analog device.