On 10/12/2012 09:22 AM, Dave Malham wrote:
Some other interesting statements, for instance page 7, "Thus,
stationary-source elevation cannot practically be accomplished" -
it's been a while since i read that paper, but isn't that sentence
specifically about auro-3d?
the title seems to suggest otherwise, but i think it's not really meant as a
general overview at all.
Wouldn't that mean that they are actually saying their technique does
not work as well as it could?
yes. it's not "their technique" anyways.
actually, during the initial auro-3d hype and the first marketing
onslaught, this paper to me was a very welcome voice of reason that
pointed out the limits rather than advertising yet another mind-blowing
revolution to end all revolutions...
Hmm - a matter or discussion - you can certainly(usually) hear it if
you can move around.
yes, but try moving around in a field of three or more correlated
sources. and even with two-source fields, the degree to which our brain
can compensate for the spectral deficiencies in binaural listening is
quite amazing when you actually measure the resulting spectrum in one point.
Ah well, at least it would get a sufficient number of speakers into
people's homes to do Ambisonics with height with a re-jigging of their
positions ;-)
part of the marketing genius and good sense for practicalities. throw in
their clever codecs to shoehorn auro content into 5.1 carriers while
remaining downwards compatible, and you have something with potential
which we can learn a lot from.
if only i had some time on my hands, i'd love to throw an ambisonic deocoder
at an auro-3d layout... it's quite sub-optimal for ambi, but there are quite
a few of those systems around.
Indeed, and as the system is probably as, shall we say, 'forgiving' as
5.1 in terms of speaker positioning, moving the rears in and the
fronts out to make something more cubic, it could work quite well for
ambisonics, whilst not screwing it up too badly for Auro-3d.
actually, most auro-3d proponents i've talked to tend to give up on
lateral localisation and move the rears further together for something
resembling old-style quad, and they will frequently create stereo fields
between Ls/Rs and HLs/HRs, respectively.
with the microphone techniques i've seen used for auro, i don't think a
cube would hurt at all, at least for non-frontal stuff. but some care
should be taken not to mess up the LCR part.
--
Jörn Nettingsmeier
Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487
Meister für Veranstaltungstechnik (Bühne/Studio)
Tonmeister VDT
http://stackingdwarves.net
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