[Sursound] ChatGPT & Ambisonics

[Courville, Daniel]

What is Ambisonics?
Ambisonics is a technique of sound spatialization that uses multichannel 
recordings to reproduce a three-dimensional sound image. It is often used in 
films, video games, and virtual reality experiences to create an immersive 
sound environment. It typically uses multiple speakers to reproduce sounds at 
different locations in space to create a sense of real-world space and depth. 
There are different Ambisonic formats, such as 3D Ambisonics.

What is the SoundField microphone?
The SoundField microphone is a type of microphone that uses multiple microphone 
capsules to capture sound in different directions. It is often used in 
Ambisonics to capture a full sphere of sound around the microphone, which can 
then be used to create a 3D sound image. The microphone typically includes a 
main microphone capsule, as well as several other capsules that are positioned 
at different angles around the main capsule. These additional capsules capture 
sound in different directions and create a more detailed and accurate sound 
image. The SoundField microphone has been used in various applications such as 
film and game audio production, music recording, VR audio and more.
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Re: [Sursound] Sursound Digest, Vol 173, Issue 4

[Courville, Daniel]

Hi David,

I relayed the info to our students, hopefully they will submit something.

That being said, I’m a bit perplexed by the “6th order” specification. I don’t 
know the details of the hardware and software involved in the Sonosfera, but I 
would imagine that it should be able to playback and decode 3rd, 5th or 7th 
order files.

Is it because it was determined that the Sonosfera number of speakers was ideal 
for 6th order?

Thanks,

Daniel

Le 2023-01-16 12:01, Sursound a écrit:

--

Message: 1
Date: Mon, 16 Jan 2023 13:24:25 +0100
From: "i...@davidmonacchi.it" 
To: sursound@music.vt.edu
Subject: [Sursound] ISAC 2023 - International Sonosfera? Ambisonics
Competition ?Eugenio Giordani?
Message-ID: 
Content-Type: text/plain; charset="utf-8"


Dear list,
(Apologies for cross-postings)


ISAC 2023
International Sonosfera? Ambisonics Competition ?Eugenio Giordani?
1st call for submission of 3D-audio electroacoustic compositions



Awards ceremony and concert - 9th June 2023
Pesaro, ITALY
https://isac-pesaro.github.io/ 


First Prize  ? 2500
Second Prize ? 1000
Third Prize ? 500
(+ expenses for 3 days in Pesaro-Italy)



DEADLINES:
Submission: March 28th 2023
Result: May 5th 2023
Award Ceremony: June 9th 2023



CALL (see THIS PDF )
ISAC competition calls for outstanding 3D-audio works created for full-sphere 
reproduction, for an acousmatic or audio-visual listening experience.
Requested works will have to be presented in 6th order Ambisonics format - 
maximum duration of 10 minutes. (See pdf for specifics)

Candidates can submit their works exclusively online. The procedure starts by 
sending an email indicating name, nationality and age of the candidate to the 
following email address: isac.pes...@gmail.com 
A response with a link to a Google Drive private folder (were the candidate can 
upload all his material) will be sent to his email address. Every candidate can 
modify his folder until the end of the call. The Steering Committee will 
process all submissions in order to eliminate any reference to candidates? 
names and data, and will send to the International Jury only the compositions 
for blinded judgment. The requested material will have to include:

1) PDF 1 ? Program notes (with no reference to the name of the candidate) 
including:

- Title (and subtitle if applicable)
- Duration (max 10.00 min.)
- Short synopsis with any information on poetics and compositional strategies - 
Technical information including photos (if relevant) and original 
spatialization techniques used

2) PDF 2 ? Name with short bio and/or extended CV
3) WAV file ? 6th order Ambisonics ACN-SN3D, 48kHz-24bit



CATEGORIES

A) Acousmatic

1. Electroacoustic Music
2. Soundscape Composition

B) Integrated Audio/visual


Juries
There will be two different juries. A Steering Committee will pre-select 
compositions on the base of eligibility, technical feasibility, aesthetics and 
potential result in Sonosfera?. A Guest Jury will select winners from a short 
list of best suited compositions.

Guest International Jury: Natasha Barrett - President (Norway), Chris Chafe 
(CCRMA - USA), Rainer Kern (Germany), Otolab (Italy), Barry Truax (SFU - 
Canada).

Steering Committee: Nicola Casetta, Carmine Emanuele Cella, Tommaso Giunti, 
David Monacchi, Alessandro Petrolati.

Sonosfera? Curators: David Monacchi, Daniele Vimini


Best,

ISAC-2023 Steering Committee
isac.pes...@gmail.com 



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[Sursound] spcmic

[Courville, Daniel]

https://spcmic.com
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Re: [Sursound] Ambisonic UHJ Stereo decoder to speaker feeds

[Courville, Daniel]

Maybe it's a question of terminology, but you need:

ATK UHJ *Encoder* (will convert UHJ to planar 1st order FuMa B-Format);
followed a B-Format decoder.


Le 2022-02-25 12:00, Sursound au nom de sursound-requ...@music.vt.edu a écrit:

Message: 1
Date: Thu, 24 Feb 2022 18:16:33 -0500 (EST)
From: surround surround 
To: Sursound@music.vt.edu
Subject: [Sursound] Ambisonic UHJ Stereo decoder to speaker feeds
Message-ID: <967529165.138166.1645744593...@myemail.cox.net>
Content-Type: text/plain; charset="utf-8"

I have retired my Onkyo SV-909 receiver with a UHJ decoder after many years 
of service. Over the years I have transferred my LP and CD surround recordings 
decoded into multichannel flac files for playback on a computer based system. I 
did manage to do a couple UHJ recordings using the Onkyo a while back but 
wondered if their might be a computer based solution.


I am currently using Reaper as my DAW. I did a search for Ambsonic VST 
plug-ins and found The Ambisonic Toolkit for Reaper. I played with that but 
found that that The UHJ decoding it could do was from UHJ W,X,Y,Z to stereo and 
what I am looking for is UHJ stereo to a speaker feed. I really do not need the 
ability to adjust to different 4 channel layouts like the Onkyo provided and 
could just live with a square.


I could be I simply missed something in the ATK as maybe a signal chain 
that could provide the decoding I need to convert my old CD's and LP'sbut 
thought why not see if the knowledge base here might be aware of a solution


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Re: [Sursound] Reaper performance issues.

[Courville, Daniel]

Hi,

The problem is that you have, say, 30 mono audio files * 16 channels = 480 
channels.

You could use IEM MultiEncoder and have the 30 mono audio files sent to a 
30-channels aux bus (with the MultiEncoder on that bus) = 60 channels

That's the way I would do it.

Le 2021-10-19 12:00, Sursound au nom de sursound-requ...@music.vt.edu a écrit:

Today's Topics:

   1. Reaper performance issues. (Tom Slater)
--

Message: 1
Date: Mon, 18 Oct 2021 20:10:22 +0100
From: Tom Slater 
To: "sursound@music.vt.edu" 
Subject: [Sursound] Reaper performance issues.
Message-ID:

Content-Type: text/plain; charset="utf-8"

Hi everyone,

I wanted to get an idea of your experiences with Reaper running large (ish)
ambisonic sessions.

I mostly work in 3rd order ambisonic and use the Blue Ripple plug-in suite
and Rapture 3D Advanced  for decoding.

I?m decoding to a 25.2 channel speaker array and could have up to 40 odd
tracks, each with a 3rd order encoder/panner on.

When I reach about 30 tracks Reaper performs very badly - laggy response
when moving play head around, lots of clicks and pops when muting/soloing,
random clicks and pops when just playing the session. Sometimes if I need
to record arm a track playback is completely glitchy.

I understand that 30 odd tracks each with a 3rd order encoder, and decoding
to 27 channels is a lot to ask of the computer. BUT I?m using a 14 core
iMac Pro with 64gbs ram. The sessions are running off an external TB2 drive
(not SSD).

I?ve played around with buffer settings which don?t seem to make much
difference. Also the perf monitor in Reaper and the activity monitor in OSX
don?t show that much strain.

Any optimisation tips greatly appreciated. Or any other similar issues with
Reaper?

Cheers
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[Sursound] Ircam Forum Workshop Hors Les Murs Montréal 2-5 April 2020

[Courville, Daniel]

Hey! Come visit us!

https://forum.ircam.fr/agenda/ircam-forum-workshop-hors-les-murs-montreal-2-5-avril-2020/detail/

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[Sursound] Zoom H3-VR: new Facebook users' group

[Courville, Daniel]

Hi,

I've started a new Facebook users' group dedicated to the Zoom H3-VR: 
https://www.facebook.com/groups/902899420069659/

Cheers,

Daniel

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[Sursound] Re : Zoom H3-VR anyone?

[Courville, Daniel]

Hi there,

Use the Zoom software for A to B-Format conversion.

Once in B-Format, the choices are numerous. For 1st order to binaural decoding, 
there's Harpex, of course. https://harpex.net

But also have a look at the IEM plug-ins https://plugins.iem.at

And the AALTO SPARTA plug-ins http://research.spa.aalto.fi/projects/sparta_vsts/

Harpex and the binaural decoder in the SPARTA suite can load SOFA files. The 
IEM suite will soon include a binaural decoder that can also load SOFA files.

Cheers,

Daniel


Le 18-11-18 12:00

The sound seems OK but the post-processing software from the Zoom 
website is nothing to write home about. Essential features like level 
control and normalising are lacking and I'm not too happy with the 
conversion to Binaural.

So, if anyone has suggestions for better Mac ambisonics software or 
plugins I'd love to hear from you.



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Re: [Sursound] Rode NT-SF1 and Zylia ZM-1

[Courville, Daniel]

Matthias Kronlachner « mcfx_filter » from his mcfx suite of multichannel 
plug-ins. http://www.matthiaskronlachner.com/?p=1910

You can try EQing the A-Format.

He also makes a suite of Ambisonics plug-ins, ambiX. 
http://www.matthiaskronlachner.com/?p=2015

Le 21 oct. 2018 12:00 -0400, sursound@music.vt.edu , a 
écrit :

Yes, and the ZM-1 could probably benefit from a smidge of EQ (any
suggestions?).
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Re: [Sursound] Rode NT-SF1 and Zylia ZM-1

[Courville, Daniel]

Hi,

First off, I didn’t have the opportunity to test neither the NT-SF1 nor the 
ZM-1.

But, I would point that the NT-SF1, like other 1st order mics, can benefit from 
spatial resolution upmixing/upsampling using plug-ins like Harpex or the NT-SF1 
own « SoundField by RØDE ». According to this page 
http://research.spa.aalto.fi/projects/sparta_vsts/plugins.html, there should be 
an eventual upmixing plug-in in the SPARTA suite.

So, if one is really enamoured by the timbral qualities of a particular 1st 
order mic, but needs the added spatial resolution, there’s a solution for that.

Cheers,

Daniel


> Date: Fri, 19 Oct 2018 17:30:37 +1100
> From: Gary Gallagher 
> To: Surround Sound discussion group 
> Subject: [Sursound] Rode NT-SF1 and Zylia ZM-1
> 
> I really like the richness of NT-SF1 but if I was chasing spatial
> resolution the ZM-1 would be the better choice.

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Re: [Sursound] ST350 service/calibration + accessories?

[Courville, Daniel]

SoundField

UK Telephone
Tel: +44 (0)208 962 5098

UK Address
73-75 Scrubs Lane
NW10 6QU, London
United Kingdom

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[Sursound] Nuendo 8.3 update

[Courville, Daniel]

New in Steinberg Nuendo 8.3 regarding Ambisonics:

Panning audio in Ambisonics
Mono, stereo or surround channels can be routed to Ambisonics buses with the 
new VST MultiPanner to position the audio in the Ambisonics sphere

Monitoring Ambisonics Audio
Nuendo 8.3 includes an VST AmbiDecoder plug-in. This decodes the Ambisonics mix 
to an immersive HRTF-based binaural sound for headphones or to an immersive 
sound speaker configuration. Besides being able to import an HTRF file 
containing the information of individual head and ears shape, the AmbiDecoder 
also offers YouTube and Facebook monitoring modes.

https://www.steinberg.net/en/products/nuendo/what_is_new_in_nuendo_8.html

https://www.steinberg.net/index.php?id=downloads_nuendo_8&L=1


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[Sursound] Nevaton Ambisonics

[Courville, Daniel]

Hum... http://nevaton.eu/nevaton-goes-ambisonics/

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[Sursound] Zoom H3-VR

[Courville, Daniel]

New tetrahedral mic and recorder from Zoom:
https://www.zoom.co.jp/products/field-video-recording/field-recording/zoom-h3-vr-handy-recorder

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[Sursound] Nuendo 8.2

[Courville, Daniel]

After Pro Tools HD (or Pro Tools Ultimate, as it's now called) last October, 
Steinberg's Nuendo is the latest DAW to feature Ambisonic busses, up to 3rd 
order. No panners or decoders yet, but that should come in a later update. 
https://www.steinberg.net/en/products/nuendo/what_is_new_in_nuendo_8/what_is_new_in_nuendo_82.html

In any case, there are now a lot Ambisonic VST plug-ins available, like the 
free IEM suite that features the very interesting AllRADecoder. Check it out! 
https://plugins.iem.at

Cheers!

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[Sursound] Rode Soundfield NT-SF1

[Courville, Daniel]

This should be interesting...

http://www.rode.com/nt-sf1

https://vimeo.com/264158943

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[Sursound] Trim your quotes!

[Courville, Daniel]

Hello everyone,

Please trim your quotes!

Cheers,

Daniel

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Re: [Sursound] realtime 5.1 streaming over hdmi ?

[Courville, Daniel]

A 2012 Mac mini will work fine. The screenshots I posted two days ago are from 
a Mac mini with OS 10.12.6.

It's connected to Yamaha CX-A5100 and no tweaks were needed on the Yamaha for 
the Mac to see it or to enable eight LPCM channels via HDMI.

Some apps, like VLC, can either send the audio to the Yamaha as LPCM (VLC 
decodes the Dolby or DTS track) or as bitstream (the Yamaha will do the 
decoding).

I also used TwistedWave, Reaper and Pro Tools connected to the Yamaha via HDMI. 
That's in classroom/projection room. Very reliable.


Message: 8
Date: Thu, 8 Mar 2018 12:53:45 +
From: Augustine Leudar 
To: Surround Sound discussion group 
Subject: Re: [Sursound] realtime 5.1 streaming over hdmi ?

Any idea if a Mac min would do that too ?

On Thursday, 8 March 2018, Felix Andriessens  wrote:

>This might depend on your PCs graphic card, too. My 2012 MacBookPro
>supports at least eight via HDMI; my late 2011 iMac only two.


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Re: [Sursound] realtime 5.1 streaming over hdmi ?

[Courville, Daniel]

https://www.eightforums.com/threads/digital-audio-hdmi-only-has-2-channel-option.6655/

Le 18-03-07 12:00, Sursound au nom de sursound-requ...@music.vt.edu a écrit :

However when I pluged the PC in it only showed
up in stereo. Ive tried setting the "configuration" in the windows playback
devices section to 7.1 / 5.1 etc but it only seems to show up two channels
left and right in th ePC - any idea how to get around this ? My google fu
has proven weak on this one,



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Re: [Sursound] realtime 5.1 streaming over hdmi ?

[Courville, Daniel]

It will look something like that:

http://www.radio.uqam.ca/ambisonic/images/hdmi_1.png


http://www.radio.uqam.ca/ambisonic/images/hdmi_2.png

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Re: [Sursound] realtime 5.1 streaming over hdmi ?

[Courville, Daniel]

Well, on macOS, if you connect your computer via HDMI to a surround 
receiver/processor, you'll have the option of using that device as an audio 
interface.

Or do you mean something else?

- Daniel

Message: 1
Date: Tue, 6 Mar 2018 13:36:28 +
From: Augustine Leudar 
To: Surround Sound discussion group 
Subject: [Sursound] realtime 5.1 streaming over hdmi ?
Message-ID:

Content-Type: text/plain; charset="utf-8"

Does anyone know a way of streaming 5.1 in realtime over HDMI ?



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Re: [Sursound] brahma facebook page

[Courville, Daniel]

Is it this page? https://www.facebook.com/BrahmaAmbisonicMicrophones/

Does not look like a new page.

--

Message: 1
Date: Mon, 16 Oct 2017 04:34:36 +
From: umashankar manthravadi 
To: "sursound@music.vt.edu" 
Subject: [Sursound] brahma facebook page
Message-ID:



Content-Type: text/plain; charset="us-ascii"

I have just created a facebook page for Brahma microphones  You can find it 
at Brahma microphones@ambisonics

umashankar



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Re: [Sursound] Suddenly ambisonic/binaural plug-ins

[Courville, Daniel]

This is the list of Ambisonic software for macOS that I maintain on the Spatial 
Audio in VR/AR/MR Facebook group.

AAX
Audio Ease 360pan & 360Monitor https://www.audioease.com/360/
Coronal Audio Arcade 
http://www.coronal.audio/corona…/arcade-spatial-audio-codec/
Dysonics Rondo360 http://dysonics.com/rondo360/
Facebook360 Spatial Workstation https://facebook360.fb.com/spatial-workstation/
Flux IRCAM Spat http://www.fluxhome.com/products/plug_ins/ircam_spat-v3
G'Audio Lab Works http://www.gaudiolab.com/cinematicvr#works
Harpex http://harpex.net/download.html
Noise Makers Ambi Head, Ambi Limit, Ambi Pan & Ambi Converter 
http://www.noisemakers.fr
Qualcomm 3D Audio Tools https://developer.qualcomm.com/software/3d-audio-tools
SoundField http://www.soundfield.com/products/surroundzone2
VVAudio VVEncode http://www.vvaudio.com/products/VVEncode
Waves 360° Ambisonics Tools https://www.waves.com/hardware/360-ambisonics-tools

Audio Unit
Audio Ease 360pan & 360Monitor https://www.audioease.com/360/
Auratorium http://audioborn.com/auratorium/3d-audio-virtual-reality
B2X http://www.radio.uqam.ca/ambisonic/b2x.html
Dysonics Rondo360 http://dysonics.com/rondo360/
Flux IRCAM Spat http://www.fluxhome.com/products/plug_ins/ircam_spat-v3
Harpex http://harpex.net/download.html
Noise Makers Ambi Head, Ambi Limit, Ambi Pan & Ambi Converter 
http://www.noisemakers.fr
SoundField http://www.soundfield.com/products/surroundzone2
Waves 360° Ambisonics Tools https://www.waves.com/hardware/360-ambisonics-tools

VST
AAT http://www.ironbridge-elt.com/products/aat.html
Audio Ease 360pan & 360Monitor https://www.audioease.com/360/
ambiX http://www.matthiaskronlachner.com/?p=2015
Auratorium http://audioborn.com/auratorium/3d-audio-virtual-reality
B2X http://www.radio.uqam.ca/ambisonic/b2x.html
Blue Ripple Sound http://www.blueripplesound.com/products/toa-core-vst
Coronal Audio Arcade 
http://www.coronal.audio/corona…/arcade-spatial-audio-codec/
Dysonics Rondo360 http://dysonics.com/rondo360/
Facebook360 Spatial Workstation https://facebook360.fb.com/spatial-workstation/
Flux IRCAM Spat http://www.fluxhome.com/products/plug_ins/ircam_spat-v3
Harpex http://harpex.net/download.html
Noise Makers Ambi Head, Ambi Limit, Ambi Pan & Ambi Converter 
http://www.noisemakers.fr
SoundField http://www.soundfield.com/products/surroundzone2
VVAudio http://www.vvaudio.com/downloads
Waves 360° Ambisonics Tools https://www.waves.com/hardware/360-ambisonics-tools
WigWare http://www.brucewiggins.co.uk/?page_id=78
X-volver http://www.angelofarina.it/X-volver.htm

Ableton Live / Max For Live / Max 7
Envelop for Live https://github.com/EnvelopSound/EnvelopForLive

Max
Ricky Graham http://rickygraham.net/?p=176401532
HoaLibrary http://www.mshparisnord.fr/hoalibrary/
ICST https://www.zhdk.ch/index.php?id=icst_ambisonicsexternals
IRCAM Spat http://forumnet.ircam.fr/product/spat-en/
Graham Wakefield http://www.grahamwakefield.net/soft/ambi~/

Pure Data
HoaLibrary http://www.mshparisnord.fr/hoalibrary/

Plogue Bidule
Aristotel Digenis http://www.digenis.co.uk/?page_id=59

Reaper
ATK http://www.ambisonictoolkit.net/download/reaper/

Standalone
Flux Spat Revolution https://fluxhome.com/project/spat-revolution/
IRCAM panoramix http://forumnet.ircam.fr/product/panoramix-en/
OZO Creator https://ozo.nokia.com/ozo_en/ozo-software-downloads/…
Sound Particules http://www.sound-particles.com
The Sound of the Mountain https://mntn.rocks
Visisonics RealSpace 360 Cinema 
http://realspace3daudio.com/dow…/realspace-360-cinema-1-0-0/


--

Message: 1
Date: Fri, 13 Oct 2017 17:38:02 +0100
From: Dave Hunt 
To: sursound@music.vt.edu
Subject: [Sursound] Suddenly ambisonic/binaural plug-ins
Message-ID: <21741b7b-1450-4198-ace3-5dd25edea...@btinternet.com>
Content-Type: text/plain; charset=us-ascii

Hi,

Just recently a number of companies seem to be offering basic ambisonic 
plug-ins with a binaural decode for use in VR audio.

https://www.audioease.com/360/

https://www.waves.com/hardware/360-ambisonics-tools

https://www.gaudiolab.com/product/works

Obviously they are all aiming at the 3D video market.

All seem to offer the use of a head tracker. 

The last seems to provide a way to prepare audio files for use in the Unity 
games engine, like the TwoBigEars/Facebook Spatial Workstation.

https://facebook360.fb.com/spatial-workstation/

They will all work with ProTools HD, the last only with ProTools, and the 
first two with Reaper. Not all alternative hosts would be suitable, though 
Nuendo and Cubase should work.

The Waves version seems to work with their Nx Virtual Room plug-in, 
originally offered as a way of monitoring mixes binaurally in a simulated 
studio environment.

All seem to be first order ambisonics only. No loudspeaker decoders are 
offered as yet. 

It had to happen,

[Sursound] Ambisonics: coming to a Pro Tools near you, bis

[Courville, Daniel]

Ambisonics: coming to a Pro Tools near you, bis.

http://www.radio.uqam.ca/ambisonic/images/pt_1282_ambisonics.jpg




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[Sursound] Ambisonics: coming to a Pro Tools near you

[Courville, Daniel]

Ambisonics: coming to a Pro Tools near you.

http://www.radio.uqam.ca/ambisonic/images/aax_sdk_ambisonics.jpg


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[Sursound] Zoom F8 Firmware For Recording 360-Degree Audio

[Courville, Daniel]

Zoom's new firmware update lets you record 360-degree audio using your Zoom F8 
MultiTrack Field Recorder and Sennheiser AMBEO VR Microphone.

https://www.zoom.co.jp/news/F8-update



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Re: [Sursound] "Surround Sound? You Ain’t Heard Nothing Yet"

[Courville, Daniel]

EMPAC http://empac.rpi.edu/events/2017/summer/spatial-audio-workshop


Le 17-07-15 13:14, Courville, Daniel a écrit :


https://www.nytimes.com/2017/07/14/arts/music/surround-sound-you-aint-heard-nothing-yet.html



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[Sursound] NYT: "Surround Sound? You Ain’t Heard Nothing Yet"

[Courville, Daniel]

https://www.nytimes.com/2017/07/14/arts/music/surround-sound-you-aint-heard-nothing-yet.html

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[Sursound] Media hosting services that stream surround sound

[Courville, Daniel]

Hi,

What are the media hosting services (Vimeo, SoundCloud, etc) that can stream 
surround sound?

Thanks,

Daniel



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Re: [Sursound] Oculus Ambisonics Starter Pack

[Courville, Daniel]

The pack is ambiX/wave. I made a FuMa/flac version: 
http://www.radio.uqam.ca/ambisonic/audio/oculus_ambisonic_audio_pack_01_fuma_flac.zip

Le 16-10-20 16:18, Courville, Daniel a écrit :

Can be useful: 
https://developer3.oculus.com/downloads/audio/1.0/Oculus_Ambisonics_Starter_Pack/



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[Sursound] Oculus Ambisonics Starter Pack

[Courville, Daniel]

Can be useful: 
https://developer3.oculus.com/downloads/audio/1.0/Oculus_Ambisonics_Starter_Pack/

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[Sursound] Ambisonics in Pro Tools HD?

[Courville, Daniel]

Ambisonics in Pro Tools HD? Maybe, if we cast our votes.

http://www.pro-tools-expert.com/home-page/2016/8/24/do-immersive-sound-formats-need-supporting-in-pro-tools

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[Sursound] New FOA recorder

[Courville, Daniel]

New FOA recorder

https://www.zoom.co.jp/products/field-recording/zoom-f4-multitrack-field-recorder

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[Sursound] 360 VR mobile video player with high-end Ambisonics audio

[Courville, Daniel]

2016 is the year of Ambisonics... 

http://www.3dsoundlabs.com/3d-audio-for-vr-360-video-players/

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Re: [Sursound] b-format decoders

[Courville, Daniel]

AAX, AU, VST: http://www.tslproducts.com/soundfield/soundfield-surroundzone2/

Ross Adams wrote:

Please could you recommend a decoder i can use in pro-tools 10 or Logic x 
that will allow me to make the four stems into stereo files or a decoder that I 
can place on the master out so that I could edit the files whilst listing in 
stereo.
   


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Re: [Sursound] Double MS to B-Format

[Courville, Daniel]

@ Billy Wirasnik: You can try my DMS to B-Format converter, part of this suite 
of plug-ins http://www.radio.uqam.ca/ambisonic/b2x.html

Basically, the recipe is M Front + M Back gives you the W, M Front - M Back 
gives the X and the S is the Y. There's some gain adjustments to be done on the 
resulting WXY, but DMS and WXY are equivalent.

In your case, there's also the extra step of converting to ambiX which can be 
done with the converter plug-in in this 
http://www.matthiaskronlachner.com/?p=2015

- Daniel

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Re: [Sursound] Ambisonics on the web pt.1: Web Audio FOA/HOA ambisonic objects

[Courville, Daniel]

Politis Archontis wrote:

> Good point, I?ll add some clarification in the dcumentation that whenever I 
> mention B-format I mean first-order B-format (which should be unambiguous).

Thanks. But I'm curious: any reason why you don't want to use the term 
"B-Format" in HOA?

People working with HOA in the last ten years or so have kept the B-Format 
moniker for the spherical harmonics stage in Ambisonics.

- Daniel

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Re: [Sursound] Ambisonics on the web pt.1: Web Audio FOA/HOA ambisonic objects

[Courville, Daniel]

Politis Archontis wrote:

> https://github.com/polarch/JSAmbisonics
> - WebAudio_FOA.js: Implements B-format encoding, rotations, virtual 
> microphones, acoustic intensity analysis, and binaural decoding
> - WebAudio_HOA.js: Implements HOA encoding, rotations, virtual microphones 
> and binaural decoding for a user-specified order

This looks great. My only concern is regarding terminology: you seem to use the 
term "B-Format" only for 1st order (and I presume it's of the FuMa kind), and 
you drop it for HOA.

So, on the GitHub page, we read:

• HOA_bf2acn: converts a B-format stream to an ACN/N3D HOA stream
• HOA_acn2bf: converts the first-order channels of a HOA stream to B-format

This could be confusing for ambisonic newbies, I think...

- Daniel

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Re: [Sursound] Conversion from FOA to TOA ? How to and why or not?

[Courville, Daniel]

Bo-Erik Sandholm wrote:

> What is the simplest or best way to upscale FOA to TOA.

Harpex-based upsamplers yield good results.

Horizontal-only, you can use the Harpex-B plug-in. Full sphere, the Blue Ripple 
Sound Harpex Upsampler.

http://harpex.net

http://www.blueripplesound.com/products/toa-harpex-upsampler-vst

- Daniel

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Re: [Sursound] Zoom H2n firmware update for spatial audio + surround podcast produciton

[Courville, Daniel]

John Leonard wrote:

>Is there a simple tool for decoding the H2n spatial material to horizontal 
>surround without all the YouTube VR stuff?

It's B-Format.

At the output of the H2n in "spatial audio" mode, it's B-Format, but ambiX 
flavor. Put the Matthias Kronlachner B-Format converter before your usual 
decoder (Surround Zone? Harpex-B?) and you're good to go.

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

- Daniel

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Re: [Sursound] Brahma first experience

[Courville, Daniel]

Please disregard the previous email...

Le 16-06-06 14:27, Courville, Daniel a écrit :

>Le 15-12-07 12:00, Emanuele Costantini a écrit :
>
>>I would like to share with you my first experience with Ambisonics 
>>technique through the Brahma microphone:
>>
>>http://tinyurl.com/z6pm5ur
>>
>>Any feedback is really welcome.
>
>Hi Emanuele,
>
>I gleaned at your PDF and I have two quick comments:
>

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Re: [Sursound] Brahma first experience

[Courville, Daniel]

Le 15-12-07 12:00, Emanuele Costantini a écrit :

>I would like to share with you my first experience with Ambisonics 
>technique through the Brahma microphone:
>
>http://tinyurl.com/z6pm5ur
>
>Any feedback is really welcome.

Hi Emanuele,

I gleaned at your PDF and I have two quick comments:

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[Sursound] Google Jump Spatial Audio

[Courville, Daniel]

Google Jump/YouTube info page on Spatial Audio

https://support.google.com/jump/answer/6399746

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[Sursound] Two Big Ears is now Facebook360 Spatial Workstation

[Courville, Daniel]

https://facebook360.fb.com/spatial-workstation/

Their workflow allows B-Format in/B-Format out, ambiX or FuMa.

With all the new tools, software and hardware, Ambisonics has never been so 
alive!

- Daniel


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Re: [Sursound] Zoom H2n firmware update for spatial audio + surround podcast produciton

[Courville, Daniel]

Brendan Baker wrote:

>this update now enables the H2N to spit out a 4-channel WAV file somewhat 
>resembling b-format, minus the vertical channel.

It is B-Format, ambiX: ACN channel sequence (WYZX), SN3D normalization.

>My assumption was/is that the orientation of the H2N's mic capsules wouldn't 
>create a true ambisonic image.

Why?

Here's a small recording I did yesterday after updating the Zoom H2n. It's a 
street corner in Montreal, just beside UQAM.

http://www.radio.uqam.ca/ambisonic/audio/mtl-uqam-acn-sn3d.flac

FuMa version: http://www.radio.uqam.ca/ambisonic/audio/mtl-uqam-fuma.flac

- Daniel
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Re: [Sursound] single file?

[Courville, Daniel]

Bill de Garis wrote:

>Is there a single file one can create that will contain video plus decoded
>(5.1/7.1/xx.1) audio (from a Tetramic/VVMic) apart from 5.1 Dolby?

You can mux a video file (like H.264) with a PCM or FLAC multichannel file 
using MKVToolNix, and the resulting MKV file will play in VLC (and some 
hardware devices like Blu-ray players).

https://mkvtoolnix.download/downloads.html

http://www.videolan.org/vlc/

- Daniel
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Re: [Sursound] B-Format encoding equations

[Courville, Daniel]

Jan wrote:

>how about http://ambisonics.ch/standards/channels/
>click each channel number to see the Spherical Harmonics in N3D and conversion 
>factors to SN3D

Ah, yes... I knew that page, but never (or at least not recently) clicked on 
the ACN number.

Thanks,

Daniel
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[Sursound] B-Format encoding equations

[Courville, Daniel]

On Richard Furse's Blue Ripple Sound website, there's a page with a clear table 
on how to encode mono signal to FuMa normalization. 
http://www.blueripplesound.com/b-format



Is there somewhere, on a website or in a PDF, an equivalent of that table for 
N3D and SN3D, to at least 3rd order?

Thanks,

Daniel
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Re: [Sursound] Storage - how do you do yours?

[Courville, Daniel]

John Leonard wrote:

> anyone got any reasonably-priced suggestions for storage?

Once production is done, to save space, I FLAC everything (or WavPack it when 
it's more than eight channel or 24 bit).

- Daniel

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Re: [Sursound] IX Symposium in Montreal

[Courville, Daniel]

Le 16-04-09 11:56, Courville, Daniel a écrit :

>Just a teaser... Detailed program to be announced soon.
>
>http://ix.sat.qc.ca

The detailed program is now online.


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Re: [Sursound] Ambisonics for Android and also Oculus..

[Courville, Daniel]

Le 16-04-05 07:05, Courville, Daniel a écrit :

>Le 16-04-04 17:42, Courville, Daniel a écrit :
>
>>So it seems that there's a gain error in the O channel of the ambiX converter.
>
>There will be a new release of ambiX in a few days fixing this problem.

The new version is now available: http://www.matthiaskronlachner.com/?p=2015

Thanks Matthias!
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[Sursound] IX Symposium in Montreal

[Courville, Daniel]

Just a teaser... Detailed program to be announced soon.


http://ix.sat.qc.ca

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Re: [Sursound] Ambisonics for Android and also Oculus..

[Courville, Daniel]

Le 16-04-04 17:42, Courville, Daniel a écrit :

>So it seems that there's a gain error in the O channel of the ambiX converter.

There will be a new release of ambiX in a few days fixing this problem. Thanks 
Matthias!
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Re: [Sursound] Ambisonics for Android and also Oculus..

[Courville, Daniel]

Fons Adriaensen wrote:

> On Mon, Apr 04, 2016 at 12:47:14PM +0000, Courville, Daniel wrote:

>> Going from FuMa to N3D, the maximum gain you should see is 3.416 linear (+ 
>> 10.67 dB) in the O channel.

> AFAIK that should be 2.646, +8.45 dB, for K.

So it seems that there's a gain error in the O channel of the ambiX converter.

Here's a comparison between the ambiX converter and Blue Ripple Sound "TOA 
Decoder - N3D/SN3D":

for FuMa to SN3D
http://www.radio.uqam.ca/ambisonic/images/fuma-sn3d-ambix-brs.png

for FuMa to N3D
http://www.radio.uqam.ca/ambisonic/images/fuma-n3d-ambix-brs.png

- Daniel
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Re: [Sursound] Ambisonics for Android and also Oculus..

[Courville, Daniel]

Albert Leusink wrote:

> 1. Does it make any difference in what order (1st or 3rd or higher...) you 
> convert from FuMa to ACN/SN3D ?

I would say no.

> 2. I noticed an increase in overall gain of about 4.5dB going from Fuma to 
> ACN/SN3D, both in 1st order and 3r order conversion. Is this to be expected 
> or is this plugin-related (Ambix VST converter 0.2.5) ?

Using the Kronlachner Ambix 3rd order converter, going from FuMa to SN3D, the 
maximum gain you should see is 1.414 linear (+ 3 dB) in the W channel and 1.291 
linear (+ 2.2 dB) in the O channel. The other channels are either identical or 
have lower gains.

http://www.radio.uqam.ca/ambisonic/images/fuma-sn3d.png

Going from FuMa to N3D, the maximum gain you should see is 3.416 linear (+ 
10.67 dB) in the O channel.

http://www.radio.uqam.ca/ambisonic/images/fuma-n3d.png

Going from SN3D to N3D, the gain is 1.732 (+ 4.77 dB) for the 1st order, 2.236 
(+ 7 dB) for the 2nd order and 2.646 (+ 8.45 dB) for the 3rd order.

http://www.radio.uqam.ca/ambisonic/images/sn3d-n3d.png

- Daniel

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Re: [Sursound] Ambisonics for Android and also Oculus

[Courville, Daniel]

Albert Leusink wrote:

>I'm sure you have all had this discussion many times over, but what, if any,
>are the advantages of 1st order ACN over FuMa?

http://www.blueripplesound.com/n3d

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Re: [Sursound] Sursound Digest, Vol 92, Issue 17

[Courville, Daniel]

Ralph Jones wrote:


>Daniel Courville wrote:
>
>>In this picture: a TetraMic, a SPS200, a Brahma, a ST450, an Ambeo 2nd 
>>prototype, and, below, a 3Dio Omni Binaural. 
>>https://www.instagram.com/p/BDKIUt-OY6k/
>>- Daniel
>
>I?m new to the list, so I apologize if this question has already been 
>answered, but have you reported on the results of your shootout? I would 
>really like to read about your procedure and conclusions.

It's not my shootout, I'm just passing along the info.

The guy doing it is Ben Adams in L.A. https://www.facebook.com/ben.adams.39395

I guess he'll report back to this Facebook group: 
https://www.facebook.com/groups/positional.audio.in.vr/

Cheers,

Daniel


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Re: [Sursound] Sennheiser Ambeo

[Courville, Daniel]

David Pickett wrote:

>At 07:49 19-03-16, Courville, Daniel wrote:
>>
>>>http://www.engadget.com/2016/03/15/sennheiser-3d-audio-demo-ambeo/
>>
>>And to give an idea of its size:
>>https://pbs.twimg.com/media/CdmtiYHUUAAPcVG.jpg:large
>
>Comparing with an actual Rycote holder, I can see that on my monitor, 
>which is 1920 x 1080, the first of these images comes out actual 
>size.  Thus the chrome grille of the capsule has a diametere of 15mm 
>and the top of the brass assembly is 40 mm from the black base.

The first Ambeo prototype used a Sennheiser e 945 grille: at its widest, that 
grille has a diameter of 46,6 mm. That means a pretty small tetrahedron.

A good bet for the capsules is the 14 mm Sennheiser KE 14-234 that's found in 
the e 914.

In this picture: a TetraMic, a SPS200, a Brahma, a ST450, an Ambeo 2nd 
prototype, and, below, a 3Dio Omni Binaural. 
https://www.instagram.com/p/BDKIUt-OY6k/

- Daniel
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[Sursound] Sennheiser Ambeo

[Courville, Daniel]

http://www.engadget.com/2016/03/15/sennheiser-3d-audio-demo-ambeo/


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Re: [Sursound] Sennheiser Ambeo

[Courville, Daniel]

>http://www.engadget.com/2016/03/15/sennheiser-3d-audio-demo-ambeo/

And to give an idea of its size: 
https://pbs.twimg.com/media/CdmtiYHUUAAPcVG.jpg:large
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Re: [Sursound] Ambi Head

[Courville, Daniel]

S?ren Bendixen wrote :

>It does?t work with Logic Pro X - but almost none of the all the plugins
>for decoding/converting ambisonics works in logic - or the work with
>limitations, odd behavior or only  fine up to 5.1. For other DAW?s Ambi
>Head seems like a cool plug in

It does work in Logic Pro X 10.2.2.

I selected "Quadraphonic" as the surround format for the LPX project and I 
dragged a quad file in the audio track: without a quad file in the track, the 
track will stay mono and the Ambi Head plug-in won't be available as an insert.

- Daniel

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Re: [Sursound] Sursound Digest, Vol 92, Issue 11

[Courville, Daniel]

S?ren Bendixen wrote :

>It does?t work with Logic Pro X - but almost none of the all the plugins
>for decoding/converting ambisonics works in logic - or the work with
>limitations, odd behavior or only  fine up to 5.1. For other DAW?s Ambi
>Head seems like a cool plug in

It does work in Logic Pro X 10.2.2.

I selected "Quadraphonic" as the surround format for the LPX project and I 
dragged a quad file in the audio track: without a quad file in the track, the 
track will stay mono and the Ambi Head plug-in won't be available as an insert.

- Daniel
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Re: [Sursound] Sennheiser Easy 3D Recording and Modeling

[Courville, Daniel]

John Leonard wrote:

>2) It will deliver A-Format signals from electret capsules.
>
>5) They are developing their own suite of software. He seemed somewhat 
>surprised when I mentioned what was already available...

Let's hope that their hardware/software combo gives access to both the A and 
the B format stream, so that we can use software they seem to ignore the 
existence...

- Daniel
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Re: [Sursound] Inventory of Ambisonics plug-ins/tools on OS X

[Courville, Daniel]

Politis Archontis wrote:

>There is also the HOA suite for Puredata from IEM Graz (IEM_ambi).

Thanks. I also found this for Max and Pure Data: 
http://rickygraham.net/?page_id=176401127

- Daniel
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[Sursound] Inventory of Ambisonics plug-ins/tools on OS X

[Courville, Daniel]

I'm making a list of the Ambisonics plug-ins/tools available on OS X.



So far, I have this: am I missing anything obvious?

AAX
SoundField: http://www.tslproducts.com/soundfield/soundfield-surroundzone2/
Harpex: http://harpex.net/download.html

Audio Unit
B2X: http://www.radio.uqam.ca/ambisonic/b2x.html
Harpex: http://harpex.net/download.html
SoundField: http://www.tslproducts.com/soundfield/soundfield-surroundzone2/

VST
AAT: http://www.ironbridge-elt.com/products/aat.html
ambix: http://www.matthiaskronlachner.com/?p=2015
B2X: http://www.radio.uqam.ca/ambisonic/b2x.html
Blue Ripple Sound: http://www.blueripplesound.com/products/toa-core-vst
Harpex: http://harpex.net/download.html
SoundField: http://www.tslproducts.com/soundfield/soundfield-surroundzone2/
VVAudio: http://www.vvaudio.com/downloads
WigWare: http://www.brucewiggins.co.uk/?page_id=78

Reaper
ATK: 
http://www.ambisonictoolkit.net/wiki/tiki-index.php?page=Downloads#JS_FX_plugins_for_Reaper

Max
Graham Wakefield: http://www.grahamwakefield.net/soft/ambi~/
HoaLibrary: http://www.mshparisnord.fr/hoalibrary/
ICST: https://www.zhdk.ch/index.php?id=icst_ambisonicsexternals

Pure Data
HoaLibrary: http://www.mshparisnord.fr/hoalibrary/

Plogue Bidule
Aristotel Digenis: http://www.digenis.co.uk/?page_id=59

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Re: [Sursound] Dialogue in center channel,,, not always

[Courville, Daniel]

>>>And which director takes care about stereo compatible picture editing?
>
>Alfonso Cuaron is possibly one such director. Both Children of Men and
>Gravity often panned the dialogue to match the position of the actor on
>screen. It's very noticeable right at the start of Gravity; first you hear
>George Clooney's voice coming from far right and as the shot zooms in and
>you start to see him appear on the far right of the screen, his dialogue
>moves across to match.

Every Pixar animation movies have panned dialogues.

Since the voices are recorded in individual booth, they start audio 
post-production with separate tracks for every voices, making panning easier 
and more effective, although making the mix more time consuming.

- Daniel
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Re: [Sursound] Sennheiser Easy 3D Recording and Modeling

[Courville, Daniel]

Le 16-01-25 08:00, Courville, Daniel a écrit :

>http://content.jwplatform.com/previews/C05CXB7o-ERPbx32c

On YouTube: https://www.youtube.com/watch?v=mmYHgzCdXi8

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Re: [Sursound] Sennheiser Easy 3D Recording and Modeling

[Courville, Daniel]

http://www.videomaker.com/videonews/2016/01/best-microphone-of-ces-2016-sennheiser-vr-mic

This says four caps. OK.

Le 16-01-25 08:17, Courville, Daniel a écrit :

>Le 16-01-25 08:00, Courville, Daniel a écrit :
>
>>From what we're seeing, the Ambeo mic looks like it has more then four 
>>capsules. 
>
>Still not sure:
>
>http://static.videomaker.com/sites/videomaker.com/files/styles/blog_post_primary/public/videonews/2016/01/IMG_1524%20Cropped.jpg


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Re: [Sursound] Sennheiser Easy 3D Recording and Modeling

[Courville, Daniel]

Le 16-01-25 08:00, Courville, Daniel a écrit :

>From what we're seeing, the Ambeo mic looks like it has more then four 
>capsules. 

Still not sure:

http://static.videomaker.com/sites/videomaker.com/files/styles/blog_post_primary/public/videonews/2016/01/IMG_1524%20Cropped.jpg
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Re: [Sursound] Sennheiser Easy 3D Recording and Modeling

[Courville, Daniel]

http://content.jwplatform.com/previews/C05CXB7o-ERPbx32c




Interesting that in the video, the first word out of the Sennheiser 
representative is "Ambisonics".

>From what we're seeing, the Ambeo mic looks like it has more then four 
>capsules. One thing is sure, Sennheiser kept their Ambisonics cards close to 
>the chest...

Maybe now AKG will reconsider making their Ambisonics mic with triangular 
capsules...
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[Sursound] Sennheiser Easy 3D Recording and Modeling

[Courville, Daniel]

« Sennheiser realizes that content is king and that for any new technology to 
gain traction, it must be easy to develop in. Sennheiser is therefore looking 
to help content creators take advantage of their 3D audio platform with 
easy-to-use recording and modeling tools.

On the capture front, Sennheiser will feature a virtual-reality microphone. 
Unlike traditional microphone designs, the new mic will capture high-quality 
audio in four quadrants. Sennheiser says the mic was designed in coordination 
with VR content producers. The VR mic is scheduled to launch in the third 
quarter of 2016. In 2017, Sennheiser will ship a software plug-in that will be 
bundled with the same mic for VR content post-production. »

From 
http://www.techhive.com/article/3019706/home-audio/sennheiser-launches-new-flagship-headphones-the-hd-800-s-and-moves-into-the-3d-audio-space-with-amb.html
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Re: [Sursound] NYC Ambisonics

[Courville, Daniel]

>Anyone notice this? http://shop.prosoundeffects.com/products/nyc-ambisonics

In the same vein, the French website http://www.surround-library.com has been 
selling B-Format audio files since 2010.
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[Sursound] Modified SoundField Mk IV

[Courville, Daniel]

Interesting: https://www.gearslutz.com/board/11410162-post650.html

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[Sursound] ICSA 2015 in Graz this week

[Courville, Daniel]

I’m leaving tomorrow for the International Conference on Spatial Audio in Graz, 
Austria.



Anyone on the list also attending?

Cheers,

Daniel
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Re: [Sursound] Soundfield MKV callibration question

[Courville, Daniel]

>Anyone have a direct line to their service department?

If I was in your situation, I would try Pieter Schillebeeckx.

http://www.tslproducts.com/people/pieter-schillebeeckx/
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[Sursound] Audeze tetrahedral microphone

[Courville, Daniel]

https://www.audeze.com/products/microphones/planar-magnetic-microphones




Hum…
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[Sursound] SoundField rental in Spain

[Courville, Daniel]

Hi,

A student of mine is looking to rent a SoundField mic in Spain.

She's going to be based in Gijon. Any possibilities?

Thanks,

Daniel


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Re: [Sursound] ambisonic.xyz

[Courville, Daniel]

>Please visit http://ambisonic.xyz/

Bravo et merci !

- Daniel

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Re: [Sursound] ENVELOP - 3D Sound, on Kickstarter.com

[Courville, Daniel]

From: https://www.kickstarter.com/projects/envelop/envelop-3d-sound

"Pledge $1,000 or more: ENVELOP Inner Circle Membership"

That should be "Inner Sphere Membership", right?

- Daniel

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[Sursound] Most convincing B-Format to binaural transcoding

[Courville, Daniel]

Hi,

I'm looking for comments on B-Format to binaural conversion/transcoding:
what's the most convincing you've heard? What was the software setup?

Thanks,

Daniel

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