Hi,
Date: Thu, 19 Sep 2013 21:50:00 +0200
From: David Worrall <worr...@avatar.com.au>
To: Surround Sound discussion group <sursound@music.vt.edu>
Hi All,
I'm away from my back-up of this list (*) so please forgive if this
has been answered before, but
Is there - on the market, or in other form - a setup system/tool
that auto configures a decoder and calibrates an ambisonic playback
rig according to the (actual) position of the loudspeakers?
thanks,
David
Presumably it doesn't have to auto-locate the speakers ?? That would
be clever and probably expensive.
I have something that was built in MAX/MSP, and can turn it into an
application (Mac OS preferred but Windows is probably possible). It
is first order only, up to 16 speakers, and based on all the info
about good decoders I've found, and can understand and implement. Of
course it could be extended to higher orders, once the maths is
thought through and the issue of different kinds of W.
Haven't done this as most of the people I'm dealing with don't have
enough speakers to make it worthwhile or essential. It's basically
part of something else which is trying to do all sorts of ambisonic
things with 16 inputs from a DAW running on the same computer. So,
until higher powered computers become affordable in an income
challenged age, processing power has to be carefully used. Increasing
the ambisonic order starts to push up the number of audio streams
that need handling in a non-linear manner. Such a decoder needs
listening to, which means that you have to able to generate something
to listen to to assess how well the encode/decode works, something I
haven't had time to do above 2nd order.
If only there was more time, things got done quicker, or someone was
paying for the work by the hour.
Ciao,
Dave Hunt
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