On 07/22/2010 08:42 PM, Ralf Mardorf wrote:
As an ape (of course I'm an ape like every human is an ape) and troll (I don't see myself as a troll) I suspect phasing too, that's why I overstated argued with the next generation Cochlea-Implant, or needles in the brain.
that is a bogus statement. phasing happens in the brain as well. just put on your favourite pair of headphones and wire one side out-of-phase. instant nausea. (of course, if you keep it on for a few days, your brain will adapt - presto: you'll be hurling all over the real world when you finally put them down.)
Visual 3D, by a surround projection + 3D glasses isn't perfect, but there is just one picture and not several pictures that needs to be phase synced in the eye. Perhaps a week analogy.
a terribly chosen analogy indeed. since when do the eyes care what phase an incoming photon is? unless you're staring into a laser, each photon will have totally random phase. next error: there *are* two images, and they do need to be synced. phase is irrelevant, though.
When having 4 or 8 or more speakers I fear phasing at the position of the ears. But perhaps it isn't that much. I'll try to listen to ambisoncs :).
you can get terrible phasing, and not just in the center, but pretty much everywhere. that's why some people stagger the timings of the loudspeakers a bit, to smear out the phasing until it is more or less masked by the content. but it should be noted that stereo has the very same problem. now if method A produces a 60° soundstage with phasing at N units of obnoxiousness, a method that produces 360° surround is entitled to 6N UoO phasing. in practice, ambisonics does better than this, but there is no denying the issue. one thing that often gets overlooked: people have learned to accept stereo (or, in some circles, 5.1) as the gold standard, and its shortcomings have grown into desired features. it's very hard to compete with a method that does a few things very well and doesn't even try to reproduce most of the auditory cues of, say, a live experience.
the main ingredient that makes any sound reproduction system sound good is your brain. the trick is to nudge it into sympathy with carefully chosen cues.
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