Henk,
Sounds like a fun project. I have run into some other folks using the
Kolor Eyes player as well.
I may have just the thing for your new player. I have been working for a
while on a new ambisonic library I'm calling VVSDK. It does all the things
you need, rotate, decode, binaural, and can include my latest A to B-Format
conversion code.
Early versions are already in use in the VR and acoustic measurement
communities and I use the same library as the back end for my own new
plugins. All this and more should be generally available as soon as I can
do the tedious bits like choosing license types, upgrading websites, etc.,
but I am ready to talk about individual projects such as yours immediately.
David McGriffy
vvaudio.com
On Wed, Jul 22, 2015 at 9:30 AM, Marc Lavallée <m...@hacklava.net> wrote:
Hello Henk.
On Wed, 22 Jul 2015 12:38:53 +0200, "Henk | Spook.fm" wrote :
My question is: Who can help us find the best libraries for
ambisonics audio to use in the 360 Video player.
I started a similar project, for the web: http://ambisonic.xyz/
A new version (working, but not yet published) will be "full sphere".
So far we have come up with the following:
you can seem to play ambisonics files with these:
https://github.com/ComposersDesktop/CDP7/tree/b085aa141fa93c98ae137feae5e7c58d656ddfdd/dev/externals/mctools
and
http://www.mega-nerd.com/libsndfile/
Are these the same?
Short answer: no.
which one would be best for this project?
I created a batch processor to convert and compress ambisonic files,
using a combination of command-line utilities from the mctools and
libsndfile, and others. To be published, eventually...
Are there other options for rotation? People have experience with
these libraries? Which one would be best for this project?
I use the h1b_rotate.dsp Faust processor from ADT (by Aaron Heller):
https://bitbucket.org/ambidecodertoolbox/adt/
It provides a rotation transformation for each axis (yaw, pitch, roll).
Where can I find the best HRTFs?
Try the ones from the ATK "kernels".
Which one is a good starting point for the “average” head?
From the ATK kernels, there's the HRIRs based on the "spherical" model
by Richard O. Duda (number 4 is the average, other variations
correspond to smaller and bigger spheres).
Try my player on ambisonic.xyz...
There's also the hb1_to_binaural.dsp Faust processor from ADT, also
based on the spherical model. The spherical model is is for "horizontal
only" decoding, but for interactive media it's not a serious problem.
If anyone has some suggestions or tips for this project it is very
much appreciated.
I hope it helps.
I will keep this group informed about future progress.
Please do!
Marc
thank you,
Henk van Engelen
Rapenburgerstraat 109
1011 VL Amsterdam
T: +31615555694
M: h...@spook.fm
Spook.fm | Facebook
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