Originally Posted by Brucemck2
Here's a proprietary synthesized surround solution in an audiophile oriented hardware unit:
Anyone with a perspective on how their approach would compare with current Pro Logic and similar offerings?
Nothing much in common with PLII. It does seem to have similarities with Quantum Logic, but that expressely uses blind source separation to decompose the audio and enable moving sound sources, which is more involved than what Illusonic describes. The closest available to that would be Neo:X, technologically, but Illusonic is much more scalable/flexible than any incarnations of Neo:X seen to date.
A friend read several of Faller's papers
, and deduced it uses:
- time-frequency representation of signal using auditory filter-banks (critical bands)
- short term magnitude average estimate for each band
- cross-correlation between input channels, for each band
- and the well-known "if it's uncorrelated, then it's diffuse, put that in the rear/height channels" and
- if it's correlated in L/R, put it in the center
Aside from the processing and speaker flexibility, the bass management and EQ functions look very well thought out. Very much looking forward to Kal's review. Tried to find a price for the unit, but none popped up. Any idea?
Kal, I have access to a good sound room in SoCal with more "3D" speakers than this can ever drive -- if perchance you want to see what it does in that environment. I know, it's a long way from home...