House Pictures Chat Corner - Show off your house pictures!

Correcting the acoustic deficiencies of a room with digital distortion devices works at best within certain limits and is all the more difficult in living areas that are nowadays often designed to be acoustically hard.

That is correct.
The calibration programs for multichannel systems especially measure the signal delay. This ensures that the spatial sound effect at the listening position works properly when speakers are at unequal distances (which is the rule in living rooms).
Some systems measure resonance frequencies and reduce them via a steep digital equalizer. This way, a corrected frequency response can be provided at the listening position. By the way, this is the same technology vehicle manufacturers use to tune their storage compartments.
To compensate for an echo or reverberation, a continuous measurement with a fast computer would have to send phase-inverted signals to a loudspeaker that energetically cancels exactly that. An electronic compensation, which is used in noise-cancelling headphones, conference systems, and in recording technology, intervenes in the signal before it reaches the loudspeaker. In a living room, compensation after would be necessary. Such a system is currently not available on the market.
By the way, calibration systems obviously do not work if the sound source is a group of people having dinner. If it reflects and reverberates here, it becomes unpleasantly loud and uncomfortable. Therefore, from my point of view, it is worthwhile to deal with room acoustics as an integral part of "living quality."
Or as Ambrose Bierce defines "noise": "Stench in the ear." Who wants that.

Correcting a room's acoustic deficiencies with digital distorters works only up to certain limits

The alternative, planning according to the sound system, leads straight to a cinema.
Heavy curtains, plush armchairs, wall-to-wall carpet, no windows, that's not how I want to live.
The possibilities of correction, subtracting reverberation, adjusting the timing of speaker positions, room modes of the bass, etc., result in an 80% solution that is fully sufficient for my 70% hearing.
We also have a 5.0 system, each speaker is also a bass speaker, so no modes.

I happen to know some developers and tuners who have also worked for OEMs. The current systems and corrections go far beyond mere equalizing; besides pure time correction and volume (EQ), phase positions, among other things, are also taken into account. But that would go too far here. On the other hand, the best hi-fi system I know in a car (among other things awarded European Champion multiple times) "only" used FIR filters.

Anyway, a 5x5x2.5m room is a complete disaster with any purely digital gimmicks, for example. Nobody is supposed to sit in a black, fluffy living room, but current developments are rather not particularly conducive to pleasant acoustics. From time to time, I watch YouTube documentaries about house construction, and while some of it looks really cool, I always shudder when the house residents’ interview at the dining table already has so much echo, and I don’t even want to imagine what it’s like in "normal operation" with children.

A short anecdote: Our windows and the pillar between the living room and dining room correspond to the DTS/Dolby arrangement, which is of course pure coincidence :p

Correcting the acoustic inadequacy of a room with digital equalizers works at most within certain limits and is all the more difficult in today's living spaces, which are often designed to be acoustically hard. Reverberation, nodes, etc. in particular cannot really be corrected digitally but require conceptual planning in advance and appropriate treatment with absorbers and acoustic elements.

Completely clear. However, I do not quite understand what you want to tell me with that!?

The speakers could perform much better in a proper room than in the current environment, which the installers do not exactly get right either, which is why it often does not necessarily make sense to set up extremely expensive speakers if the basics are not right.

And how do you conclude that the basics don't fit? I wouldn't know that they are recognizable anywhere. Also not unimportant, from where can you derive the claim/the requirements?