Hi Joao,
It sounds like you need a stereo auralization of various multichannel
diffusion pieces.
One option is to make a binaural down-mix of the multichannel
material, although that has the restriction of only sounding good on
headphones. This would still leave a decision on where to place sound
sources, and how to do the auralization (i.e. how to do the room
simulation, etc).
For stereo speaker playback, there is not really a canonical
solution. Again though, you could do an auralization of the intended
diffusion to an intermediate format like ambisonics, then do a stereo
decode. This will not leave as much of a spatial impression as a
binaural mix, but it will be more portable to different listening
setups.
Either way there are still various (essentially aesthetic/artistic)
decisions to make about the specification of the auralization.
So you might find that the best results for generalised playback
(headphone or speakers), is just to make aesthetic decisions and do a
multichannel downmix.
At any rate, if you want to explore ambisonic and/or binaural down-
mixes, the IEM tools for doing this are all in Pd extended.
For more info on the binaural stuff, you can try the patches and
publications here:
http://iem.at/Members/noisternig/bin_ambi
The patches are windows only, but they can be reconstituted from the
IEM objects available for other platforms inside Pd Extended (or SVN).
cheers
Nick
Nicholas Mariette
Researcher
Audio and Acoustics group
LIMSI-CNRS, Orsay, France
http://www.limsi.fr/Scientifique/aa/
http://www.limsi.fr/Scientifique/ps/thmsonesp/SonEspace
http://soundsorange.net
nicholas.marie...@limsi.fr
On Jul 20, 2009, at 3:30 PM, João Pais wrote:
Hi,
my laptop trio Endphase (http://www.endphase.net/) is going to work
out
our archived recordings, so that we get decent stereo versions to
spread
around. Since many of them are multichannel (from 4 to 8) in different
setups (not necessarily only 2d around the audience), we'll be
searching
for efficient ways to try to "convert" the original audio to stereo.
That
is, having a good as possible compromise between both situations,
knowing
that a 100% simulation is impossible.
This is a field that I don't know that well, and we're still in the
beginning of the work. Does anyone has any suggestions to which
approaches
are best? Ambisonics, phase inversion, hrtf, home medicine? Are any of
these also available through Pd? (it would be nice to mix/spacialize
the
materials in Pd)
Thanks,
João Pais
--
Friedenstr. 58
10249 Berlin (Deutschland)
Tel +49 30 42020091 | Mob +49 162 6843570
jmmmp...@googlemail.com | skype: jmmmpjmmmp
_______________________________________________
Pd-list@iem.at mailing list
UNSUBSCRIBE and account-management ->
http://lists.puredata.info/listinfo/pd-list
_______________________________________________
Pd-list@iem.at mailing list
UNSUBSCRIBE and account-management ->
http://lists.puredata.info/listinfo/pd-list
