Hi @Joseph - that's a great question. From my POV, the engine is live, producing real piano resonances based on notes, velocity and all kinds of physics relating to your actual performance, in relation to how it would sound if generated by the real piano modelled. Some pianos may have subtle or tame resonances, some more broad or scatterd.. some may sound more tightly 'tuned' in a way (with the resonances hugging the music's key - faster/slower etc.) - but this is based on how the various pianos respond IRL, so each one's resonances will be born of the whole piano. You could match 2 Steinways or mix up or mismatch pianos for interesting variant sounds (no harm in trying things to get your own sound over time beyond defauls).
Like the other elements of a Pianoteq piano/preset's sound, the resonances are generated in real time - and is genuinely different in each/any piano/preset.. so if you love something about a particular piano, but it lacks something (like not enough post-damper resonances, or longer tails), then you can get great mileage from applying the resonances of any piano to any other (even other Pianoteq pianos.. it doesn't need to be an other software piano).
Glad you got good mileage there stamkorg.
As an aside, maybe a good spot to express these ideas.. the video and other thread is about using the resonances feature with other piano software, but for sure, this also works wonderfully with Pianoteq pianos/presets (it's prob easy to overlook that possibility, or maybe some users don't use other piano software - just like to cover that fact that it's OK to do this with just Pianoteq pianos too. Instead of loading a different piano software, we can load Pianoteq on 1 track in a DAW, then another instance of Pianoteq for the resonances track for a basic outline.. and follow the video trail.).
A 'key' part to this feature, is kind of having that vivid resonance on its own channel (unlimited options inre mixing that by itself - with/without other onboard audio tools - some mixer-minded people can easily assume a kind of throw to a reverb send/return setup - but with pretty genuinely realistic piano resonances instead). The user's ability to choose the mix levels and so on, gluing it together by ear is not only fun but can make 'what happens' in a real room come more to life too. For sure Oliver's vid and thread and Andy's vid works through all that really nicely.
Will put this here as a feature request I guess:
I'd just also suggest it's probably a logical home for the feature too.. perhaps in future it would be an excellent thing for an additional tailored feature built into "Pianoteq Layers" section itself‽
Some reasons: Even in stand-alone mode, users could then for example, use "Layers" to begin, load 2 pianos, then with one selected, click without fuss something like: "Convert this layer to a resonance layer".. so that someone might make layer 1 be just a fav full piano which they'd like to 'juice up', then create layer 2 (or more), make that/those into resonance layer(s).. maybe a slider to balance between these layers' resonances only when selected.. disable resonances in 1 layer or more etc.. - a bunch of things come to mind.
Should add that I find it excellent to tailor any other source too in various ways beyond just reverb - esp. for creative sound-scaping or other things even non-musical.
Again, excellent presentation in your vid Andy - your passion and ease with these tools is surely a fabulous inspiration to many who witness it. Fleer is a super person! and it's my pleasure to enjoy creative people expressing ideas like this - hat is off to you guys!
Pianoteq Studio Bundle (Pro plus all instruments) - Kawai MP11 digital piano - Yamaha HS8 monitors