The slanted panels stop echo from slapping between the floor and ceiling. It is sometimes used on the side walls too. Reflections from midrange on up are pushed rearward for absorbtion by a dead rear wall. Above the reflective angled surface is absorbtion to kill some midrange energy and upper bass echos too. This is a common trick used by Rives, acoustic consultants. Shane is/was a Rives dealer. He can hook you up. Tell him you want it in piano gloss teakwood.
Looks like the front most panel is soft for more absorbtion. It's still more effective with the tilt than putting it flat on the ceiling.
The disadvantage of any striped treatment is lobing. Midrange tone will vary between seats front to back as phase delays in midrange freqs change abruptly. Curving the panels would reduce that. You will not notice this if your head is not in the zone of reflections from two different panels, or if you're in the front seat ahead of where the lobing effect begins, maybe that's why the front panel is soft? But it's not as good as diffusion which, by dispersing reflections, smooths out phase distortion effects (comb filtering.) The nice thing about the tilted wood panels is lots of coverage for a low price and it will treat to lower mid freqs than standard diffusion methods, if the backwall is absorptive enough. It is a popular treatment because floor and ceiling are typically hard surfaces, even with carpet some midrange echo survives, they are always parallel and largest surfaces in the room when door openings and window treatments are considered. Slap echo is a big source of midrange distortion, and probably the largest distortion component of any system. 8 foot ceiling will make nodes in multiples of 70Hz, muddying bass too.