David McGriffy wrote:
There does seem to be a lot of interest in ambisonics to binaural these days.
It certainly seems that way to me since I’ve been immersed in it of late.
Stefan, if your suggestion to the folks at JauntVR is what turned them on to ambisonics, then I must thank you as I have been having a great time working with them to provide custom ambisonics code, including binaural conversion.
- They (JauntVR) have used Ambisonics before I even heard about them, so
Ambisonics didn't need my help to be "discovered" by the JauntVR
development team... if there was any decisive "suggestion" to use
Ambisonics in this context, it was probably the fact that Ambisonics is
an established and very usable 3D audio format/framework. And further
that we have microphones to record FOA (soundfield mic) or even HOA
fields (spherical array microphones, eigenmike etc.).
Binaural recordings would be another choice for "3D audio capture" -
binaural recordings are "colored" or personalised from the very start,
though. Even worse: How would you apply HT to binaural recordings? This
doesn't seem to work at all...
- In my (short) contact with JauntVR, I suggested (only) to consider the
use of some parametric decoder. (for example Harpex)
I expect that I will also have some level of binaural conversion out in general
purpose plugins eventually.
Great news. Hopefully this won't take very long. The demand for this
is already there - and probably will increase.
Best,
Stefan
David McGriffy
VVAudio.com
On Nov 12, 2014, at 5:10 PM, Stefan Schreiber <st...@mail.telepac.pt> wrote:
Sampo Syreeni wrote:
On 2014-11-12, Braxton Boren wrote:
Our lab is working on some audio spatialization techniques that we'd like to
sync up with visual content over the Oculus Rift. We would like to process the
Ambisonic audio content separately (using head-tracking data from the Oculus)
for binaural rendering while the interactive VR visuals are running on the
Oculus.
What is this, a sudden landslide? I *just* got a demo from Ville Pulkki on this
precise stuff at Aalto, here. I'm betting you'd want to contact him directly on
this one.
Well, but I < did > write to Ville Pulkki during last week about VR and other
applications of Ambisonics and DirAC (or in general: Ambisonics and parametric
Ambisonics decoders). Which is probably just a further coincidence...
Still waiting for the master's answer, though... :-D
--------------------------------------------------
"
See Bo-Erik Sandholm's recent posting on sursound (on "VR applications")
http://permalink.gmane.org/gmane.comp.audio.sursound/6227
...
... The combination of Ambisonics, DirAC and head-tracking (for binaural
decoders) could be a real game-change development.
"
In any case, the VR people have already discovered Ambisonics some while ago -
I remember that I myself have suggested to some representant of Jaunt VR
(obviously Jaunt VR is connected with the Oculus Rift train) to consider the
use of Harpex. (thread retrievable via sursound archives)
The bigger picture is of course that head-tracked Ambisonics seems to be a natural fit
for VR audio - VR includes HT "by definition", and needs obviously some 3D
audio infrastructure for the sound. Ambisonics offers both an established 3D audio
framework and (importantly, too...) 3D audio capture!
Rotation of sound fields according to positional head data can be realized in a
straightforward and simple fashion - before the decoding stage.
Best,
Stefan
I was just wondering if there are any freely available demos that include both
VR visuals for Oculus as well as Ambisonic sound files.
Dunno how freely available they are, they they exist. *Oh* do they exist! :)
- VR visual content *integrated *with the Oculus Rift
- *Raw *Ambisonic recordings that go along with the VR simulation
The latter were played, at first order. Multiple clips too. I'm betting the
A-format has been entombed as well, because I seem to remember at least one
paper might be hanging on it. But let Ville fill out the details. And of course
Archontis Politis, who's working on his PhD at Aalto -- and who demonstrated
even wilder ambisonic minded stuff to me on the same visit... 8)
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