By the way, how do you want to compare room correction systems? Simply showing which one creates the flattest response? That's not what all of them are after.
We would need to define what thoses systems should do, i.e. define a meaningful quality criterion. Like what Harman did: "Which system sounds best". Otherwise a comparison is meaningless.
The problem with that is that he would then be testing each system against itself - evaluating how closely it matched its own goals. What I thought he was trying to do was to see which of the systems under test worked best according to a set of criteria he himself had devised - ie comparing each one against a defined goal (Stuart's goal).
That actually was what I'd planned to do...have a baseline (which I'll all my Denon 4311 without Audyssey), and compare to:
- Audyssey XT32 (consumer)
- Audyssey XT32 with Audyssey Pro engaged
- R-972's version of Trinnov (that "frankenprocessor" I mentioned awhile back, using it as a dedicated box for an input into my Denon as an amp, but I wouldn't be adverse to someone donating an MC-8 or something)
- Dirac Live RCS (probably the PC version, unless Carl Huff releases his standalone this year)
possibly MCACC because I have an old SC-27, but I sold my AS-EQ1, so it's going to be a somewhat non-level playing field. However, that's reality.
To the rest, my thinking, which I still have to flesh out, would be to compare to a flat curve _at first_, with some sidebars that are more nested, e.g. Trinnov "flat" vs. "natural", a customized Dirac one, or Audyssey Pro with a "house curve" vs. a standard flat curve. But clearly the less purely automated RC have more capability than the others.
Quite honestly, this was mostly conceptual until it wasn't, like now...
Keep in mind I'm a hobbyist, and I'm focusing on what one can do within the "mainstream" (as opposed to with the five-figure RC units)...not to mention that I have a non-dedicated, multipurpose room, albeit a relatively large one, but it's clearly not perfect for audiophile use. As I've said elsewhere here: it's our 23 x 17 x 8.5 living room, connected to our dining room in an L-shaped pattern, with windows facing Lake Michigan and Navy Pier on one side. So I'm interested in what a sort-of layperson can accomplish with relatively easy to find tools.
And while I have delusions of experimental design methodology from my day job, I'm not anything like a pro like Nyal Mellor or an expert like Markus, so there's only so far I can go. Meaning I might not be able to go full Harman or do a journal-quality paper. Although I'd love to....
Anyway, have to go...I still have an afternoon of work ahead. Debate amongst yourselves...
Edited by sdrucker - 9/25/13 at 10:49am