I feel like I've just been hit over the head with a rewind button! 384kbs AC-3 was a dinosaur after DTS came out all those full moons ago. It took a long time for Dolby Digital Plus to come out
Not according to my own testing. From memory, I noticed a massive step up in performance. Wasn't DTS available up to 1.5Mbs? Here comes the old adage from the car engine world, there's no replacement for displacement.The differences in codecs between 448kbps DD and DTS was negligible, it was simply down to how a movie was mixed.
This is intended for broadcast and with small TV speakers, not HiFi and not messing with the directors intent. It's about improving what Dolby have highlighted as an issue getting decent sound from TV audio from the built-in speakers and it offers a few solutions. At no point did they suggest it was High fidelity or replacing any existing full fat audio available on Blu-ray etc.
Just about to take the plunge and upgrade from my beloved Denon Amp (7.1 but no HDMI as so old) and looking forward to Audyssey "correction" so yes indeed I see what you mean?Pretty much all of us use Audessey / Dirac or equivalent, which is a pretty similar idea, mess around with the audio to create the idea of a better room.
The music modes (concerts etc) have always been pretty terrible, however sooner or later they will crack it and they will sound good. You just have to look any any tech, for example voice reconignition or VR, its slowly getting there.
I have a number of high end plugins for music production that help make mid-bass sound like deep bass through complex psycho-acoustic
Some of them work reasonably well, but not with all material.