On 05/03/2011 01:21 AM, Stefan Schreiber wrote:
in my experience, first-order horizontal over eight speakers is slightly
but noticeably worse in the sweet spot than six, so not recommended for
homes if you seldom if ever listen to third order material.
Ah... I thought this was a "well-established fact" in the scientific
community?!
the general fact that you shouldn't use much more speakers than
necessary, yes. i mentioned this because of an old ambisonic myth that
stated "the more speakers, the better", which is demonstrably wrong.
"In my experience" is another thing, though. Anecdotical evidence, not
more or less.
those "slightly more speakers than necessary" cases are a bit tricky...
first order over a 24 hemisphere is horrible, as is first order over
three stacked octagons.
horizontal first order over eight is not that much of a problem, but
noticeable.
the most striking experience of horizontal first-order degradation over
eight speakers was in the sala bianca in parma, using virtual ambisonic
speakers on their wfs system. fons demo'ed ambi rendering, and we
switched between six and eight sources.
i'm sorry to muddy the clear and abundant spring of rigourous ambisonic
evaluation with my shoddy anecdotal evidence and promise to either chase
50 subjects through a bullet-proof listening test before speaking (like
everyone here), or shut up forthwith. ;)
for larger audiences, the game seems to be a bit different, although i
don't quite understand why.
Maybe the decoder is different?
Don't get me wrong, but sometimes it is productive to pull someone's
leg... O:-)
well pulled, but no, the decoder was identical.
--
Jörn Nettingsmeier
Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487
Meister für Veranstaltungstechnik (Bühne/Studio)
Tonmeister VDT
http://stackingdwarves.net
_______________________________________________
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound
