Discussion:
Binaural broadcasts | Lithuania (Stefan Schreiber)
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Jurgis Jarašius
2016-11-14 08:46:00 UTC
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Dear Stefan,

We are using 5th order ambisonics 'stretched' over 23 loudspeakers, which
is the amount we think fits our room the best.

YouTube unfortunately does not allow to do synchronized spatial video and
audio yet (with headtracking). As soon as it becomes available we will
switch over it.

The binaural result you hear is related to the ambisonic result, as we are
using a plugin suite (which was developed by Matthias Kronlachner, partly
while residing at our centre) , which allows to 'decode' 5th order
ambisonics into binaural.

http://www.matthiaskronlachner.com/?p=2015

We hope this clarifies your questions.

Warm regards,
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1. Re: Sennheiser Ambeo (Alvin Foster)
2. Re: Binaural broadcasts | Lithuania (Stefan Schreiber)
----------------------------------------------------------------------
Message: 1
Date: Sat, 12 Nov 2016 17:03:05 -0500
Subject: Re: [Sursound] Sennheiser Ambeo
Content-Type: text/plain; charset=utf-8
Jim
Alvin Foster
Sent from cell phoneOn Nov 11, 2016 12:25 PM, len moskowitz wrote: > >
Back in September, Paul Hodges asked: > > > Any word about calibration? > >
We've heard from Sennheiser representatives on Facebook that they are > not
calibrating each Ambeo individually, but rather are using a generic >
calibration for all examples of that microphone. That is much like what >
TSL Products is doing with their SoundField SPS200. > > In contrast, each
TetraMic comes with its own calibration. > > Bo-Erik (Bosse) Sandholm has
posted? the first B-format recordings that > compare Ambeo to TetraMic: > >
? https://soundcloud.com/user-740566308/ > > You can also download them
from there. > > I listened to them with a Blumlein decode and six-channel
horizontal > surround decode using David McGriffy's "VVMic for TetraMic". >
In my opinion, his two recordings of the Pygme Jazz Band are >
Core Sound LLC > www.core-sound.com > Home of Tetr
aMic > > _______________________________________________ > Sursound
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------------------------------
Message: 2
Date: Sun, 13 Nov 2016 01:54:40 +0000
Subject: Re: [Sursound] Binaural broadcasts | Lithuania
Content-Type: text/plain; charset=UTF-8; format=flowed
Dear all,
Lithuanian Academy of Music and Theatre, Music Innovation Studies Centre
already for the second time presents binaural broadcasts of contemporary
music concerts from ambisonic (23.2 loudspeakers) sphere.
Isn't this just a 22.2 (format neutral) Hamasaki loudspeaker
installation? (You could "drive" 22.2 installations also via VBAP - and
other panning techniques.)
If 23.2 would be a real "sphere" installation, I don't know any layout
which seems to fit. (21.2 and 22.2 could make some sense as sphere
layout for TOA; 23.2 not.)
Were kindly
invite you to join in and discover merits of this spatial sound format.
Which one? Panned sources, Ambisonics or the binaural broadcast result(s)?
My questions seem to be quite necessary, BTW.
Best,
Stefan
This year we are also using 360? (virtual reality) video possibilities,
which would add to the immersion of virtual listeners of the concert.
So could you turn your head? In 360? video yes, but not w/ (2-channel)
binaural audio...
Frankly, video and audio doesn't seem to fit together.
In 4 broadcasts we will listen to the compositions of two famous
Lithuanian
composers - Juste Janulyte and Mindaugas Urbaitis. All broadcast times and
links are available at tv.lmta.lt.
2016-11-08, 18.00 CET JANULYTE
2016-11-09, 18.00 CET JANULYTE
2016-11-17, 18.00 CET URBAITIS
2016-11-18, 18.00 CET URBAITIS
With this email we intend to reach research and artistic centers,
companies
dealing with audiovisual technologies, and other entities working in
similar spheres. We hope this information is relevant for you. We are
experimenting with spatial sound broadcasts hoping to contribute towards
discovering the best ways to deal with arts and technology in similar
situations through internet.
We kindly ask you to join into broadcast and/or inform interested
colleagues at your institution. We are very much interested in any
feedback
Thank you very much in advance for your kind attention!
Sincerely,
LMTA MiSC
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End of Sursound Digest, Vol 100, Issue 10
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--
Jurgis Jarašius

Įrangos administratorius

LMTA Muzikos inovacijų studijų centras
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Stefan Schreiber
2016-11-14 16:26:33 UTC
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Raw Message
Post by Jurgis Jarašius
Dear Stefan,
We are using 5th order ambisonics 'stretched' over 23 loudspeakers, which
is the amount we think fits our room the best.
YouTube unfortunately does not allow to do synchronized spatial video and
audio yet (with headtracking). As soon as it becomes available we will
switch over it.
The binaural result you hear is related to the ambisonic result, as we are
using a plugin suite (which was developed by Matthias Kronlachner, partly
while residing at our centre) , which allows to 'decode' 5th order
ambisonics into binaural.
http://www.matthiaskronlachner.com/?p=2015
We hope this clarifies your questions.
Warm regards,
Thanks for the deailed description.

To represent 5th order ambisonics over 23 speakers, your layout seems to
need at least 12 speakers in the horizont.
plane. (The vertical layout would be underspecified.)
Is this the case? Can you post some picture or better a link describing
your configuration?
Post by Jurgis Jarašius
YouTube unfortunately does not allow to do synchronized spatial video and
audio yet (with headtracking).
I am just a bit getting confused now. Doesn't at least 1st order already
work ("within" 360º videos)?

In the future you might consider to apply TOA streams via YT. (Marc
Lavallé and Gregory Pallone might be very able to comment on this, too.)


Best regards,

Stefan


P.S.: Alas, a clear application for 3DA and efficient HOA compression...
(Mpeg-H 3DA certainly can encode/decode < 5th order > HOA.)

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