Originally Posted by sdurani
Don't know about "completely destroy" the others, but the Meridian is the only one with proprietary surround processing (Trifield).
In this day and age, seems most 'surround processors' aren't breaking any ground in 'surround processing', just licensing the technologies from Dolby and DTS (same as what AVR manufacturers are doing). And it's not like Dolby and DTS have special secret versions of their surround processing that they reserve for hi-end manufacturers; it's the same PLIIz or Neo:X found on common receivers.
In fact, if you read the banter, surround processors are no longer being judged by surround processing but instead by room correction. That may be the new frontier but, as with surround processing, they are all simply licensed technologies (from Lyngdorf, Dirac, Trinnov). Well, except Meridian.
I believe it's important to distinguish that Trinnov's Remapping that Brucemark refers to is both proprietary and unique. Both the approach and outcome are different: Remapping is neither traditional decoding or upmixing as described above. The Trinnov approach is to correctly reproduce the soundfield, not artificially make a new one. There are some interesting points to consider here regarding Trinnov Remapping's added value proposition for the listener:
Stereo "upmix" Remapping: Typically it is surround content improvements Trinnov is noted for, and stereo is often overlooked. From a practical standpoint, Remapping can be very effective in enhancing stereo recordings, particularly with wide placed fronts. One favorite Trinnov configuration for stereo playback utilizes 5 front speakers covering an area of +/-60 degrees, as well as rears. As we know, Trinnov is not upmixing via a standard surround processing (read "fixed algorithm"), but rather taking the given channel information to rebuild the acoustic field. Those who have the 64bit Trinnov systems vs the 32bit 972 report more resolution and transparency in this regard. There are some list members, who like me, find stereo source remapping very effective. Stereo sources- As a recordists, there are many choices for micing/mixing that result in dramatically different results when upmixing.
Processed Channels Remapping: Remapping can provide a very effective improvement in the playback of upmixed stereo. Pro Logic, Logic-7, etc, have their place. While Trinnov Remapping alone may be preferred for spatial purity, some want a more "enhanced, artificially created' listening experience. In this regard, surround processing assumes correct speaker placement within the room (and would equally benefit from DRC). Here Remapping can typically improve spatial performance. This is particularly true with LT/RT (left track/right track) Pro Logic encoded audio found in old movies and some stereo recordings. Delos (John Eargle) made some wonderful Pro-Logic recordings. In the future, any new encoded upmix could potentially be spatially Remapped, once the Trinnov system has the parameters.
*In order to build a spatially correct acoustic field utilizing Trinnov's Remapping, the speakers must be first be made to voice identically, hence Trinnov's robust room correction algorithm. From an R&D standpoint, Trinnov started with Remapping, based on advanced mathematics in 3d sound- based on Fourier-Bessel transforms. Trinnov then applied 3d research towards solving the room correction, which, in and of itself, is another 3d puzzle.
edited to clarify points
Edited by Curt_Trinnov - 8/27/13 at 12:39pm