Interesting acoustics: Holoplot

Imagine different monitor mixes for each musician in the same room without headphones. Without leaking into the mics. Optimal performance for many musicians.
Imagine sweet spot of the mix in the complete control room. Yes. with the speakers integrated in the ceiling maybe.
Rehearsing rock guitar loud while the baby sleeps in the neighbor room, in the night, without waking up people or using a headphone.
In principle it is like a holographic movie - for sound instead of light waves. Same principle. It's actually an old principle, Huygen's wavefront principle that was widely used to do stuff in the optical domain, say fresnel lenses probably, holograms, even todays fresnel lenses for 3d monitors without glasses, a lot of applications.
But no realistic point of setting it up for audio for a long time. Much more sophisticated than line arrays. Needs todays processing power, wireless techniques, maybe light class T amping (?), stuff like that. Room calculation after actual measurements to make it work properly. The second technology e.g. needs software technology like OpenCV or similar to be effective with todays good quality, fast AND cheap webcam technology, and also embedded processing power probably to do realtime headtracking for calculating mini-transducer parameters.
All awesome stuff that you might find could have been worked on earlier, but at an unrealistic price point for the technology. Remeber, this protoype really is not particularly cheap.
I did not think or look up on the possible audio specs with such a system, but for sure it can make astonishing stuff and opens new possibilities and applications for sound. IF it gets to the market. Actually i wonder that i took until 2016 to work extensively in this kind of stuff in a real business manner and not as an academic theorectic project.
yes, very interesting possibilities open up - but it needs the market. which is most probably the professional sector first. (momentary pricing point..
ed internet information exchange and collaboration, interdisciplinary research with it, modern processor power and architectures, todays OS independend/widely portable libraries. (Like Qt or others)
And a prototype for 130,000 Euros needs quite some marketing, financial backup etc....

Yss tis is a very interesting technology. But many existing good ideas never nade it into the spotlight...