Re: [Sursound] realtime 5.1 streaming over hdmi ?

[mick ritchie]

My macmini 2012 does 8 channels of hdmi with no problems - either out of HDMI 
port or with a converter on the display port out.
Ive used it for 5.1 7.1 and some ambi outputting without problems.

The av box i have is a pioneer lx82 and has to be set correct - direct pcm - i 
think mine has to be set before the mac will
even recognise it.   My 2010 MBP will also do it and that has no thunderbolt on 
its display port which surprised me.

Have it set up so that programs load and start on boot up or by timer and for 
backup - clone the whole drive to a usb drive
that can be booted from if the mac has a dicky fit 

mick


On 8 Mar 2018, at 12:53, Augustine Leudar  wrote:

> 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.
>> 
>> Best regards,
>> 
>> Felix Andriessens
>> 

___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit 
account or options, view archives and so on.

Re: [Sursound] Simple Software to Play a 6-channel WAV File (Windows)?

[mick ritchie]

Just apologised to len for a brain short circuit - Audacity will record but not 
play back more than stereo - dr

So of this ilk Reaper is my usual simple player though id ahve htought  there 
must be simple multichannelplayers around these days

mick


On 25 Oct 2017, at 13:57, mick ritchie wrote:

> Hi len
> 
> depends on how you want to use it -  Audacity will play back 4/6/8  channel 
> files though wont allow routing so they
> just output  to 1-n - great for quick testing but not for sharing.
> I did do a bunch of streaming tests 5 years ago and settled on 4ch wavs in a 
> quicktime movie - no loss but for streaming
> or sharing I had to create a QT ref movie with the channels allocated as the 
> movie itself wouldnt remember and reverted  back
> to same mono output for each channel.   They worked in VLC and even itunes 
> shock horror as long as i had a multichannel interface as default
> 
> I'll try an mp4 when i get some time - if I just create a 4channel file with 
> duplicated mono audio and just test null phasing
> after Ive encoded
> 
> 
> 
> mick
> 
> On 25 Oct 2017, at 02:53, len moskowitz wrote:
> 
>> I'd appreciate it if someone could recommend a very simple Windows audio 
>> player that can play a 6-channel WAV file to a 6-speaker ring.
>> 
>> 
>> 
>> A DAW will be too complicated for this user and application.
>> 
>> 
>> 
>> Len Moskowitz (mosko...@core-sound.com)
>> Core Sound LLC
>> www.core-sound.com
>> Home of TetraMic and OctoMic
>> ___
>> Sursound mailing list
>> Sursound@music.vt.edu
>> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit 
>> account or options, view archives and so on.
> 
> ___
> Sursound mailing list
> Sursound@music.vt.edu
> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit 
> account or options, view archives and so on.

___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit 
account or options, view archives and so on.

Re: [Sursound] Simple Software to Play a 6-channel WAV File (Windows)?

[mick ritchie]

Hi len

depends on how you want to use it -  Audacity will play back 4/6/8  channel 
files though wont allow routing so they
just output  to 1-n - great for quick testing but not for sharing.
I did do a bunch of streaming tests 5 years ago and settled on 4ch wavs in a 
quicktime movie - no loss but for streaming
or sharing I had to create a QT ref movie with the channels allocated as the 
movie itself wouldnt remember and reverted  back
to same mono output for each channel.   They worked in VLC and even itunes 
shock horror as long as i had a multichannel interface as default

I'll try an mp4 when i get some time - if I just create a 4channel file with 
duplicated mono audio and just test null phasing
after Ive encoded



mick

On 25 Oct 2017, at 02:53, len moskowitz wrote:

> I'd appreciate it if someone could recommend a very simple Windows audio 
> player that can play a 6-channel WAV file to a 6-speaker ring.
> 
> 
> 
> A DAW will be too complicated for this user and application.
> 
> 
> 
> Len Moskowitz (mosko...@core-sound.com)
> Core Sound LLC
> www.core-sound.com
> Home of TetraMic and OctoMic
> ___
> Sursound mailing list
> Sursound@music.vt.edu
> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit 
> account or options, view archives and so on.

___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit 
account or options, view archives and so on.

Re: [Sursound] Cellphone tetrahedral

[mick ritchie]

Thanks I did remember 3dB but couldnt find it written down as such and ive 
never dealt with the maths
of bformat or sound beyond the basics

mick


On 20 Aug 2017, at 05:48, Gary Gallagher wrote:

> David,
>   I was curious about this, I've been experimenting with a
> nimbus-halliday setup and I've been turning the W channel down by a
> comparative -3db as per my rough understanding of the b spec. So to get a
> SN3d/ambix file I just keep all the channels at the same relative level?
> 
> thanks
>Gary
> 
> On Sun., 20 Aug. 2017, 00:19 David Pickett <d...@fugato.com> wrote:
> 
>> At 13:52 19-08-17, mick ritchie wrote:
>> 
>>> adjusting W by 1.414 - can that be done in reaper or protools?
>> 
>> Yes. It just means changing the level of W by 3dB.
>> 
>> David
>> 
>> ___
>> Sursound mailing list
>> Sursound@music.vt.edu
>> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
>> edit account or options, view archives and so on.
>> 
> -- next part --
> An HTML attachment was scrubbed...
> URL: 
> <https://mail.music.vt.edu/mailman/private/sursound/attachments/20170820/48fe4520/attachment.html>
> ___
> Sursound mailing list
> Sursound@music.vt.edu
> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit 
> account or options, view archives and so on.

___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit 
account or options, view archives and so on.

Re: [Sursound] Cellphone tetrahedral

[mick ritchie]

Im about to finally investigate all the newcomers to ambisonics with VR/phone 
stuff but
this site is very short on detail ie the mic might work with ios but are they 
doing the app it
would need, can it be plugged straight into a computer - will it need an app 
there too?

Id like to ask a simple question to this debate about SN3d/Ambix format files 
in order to
check the pingpong file?
 I remember in the early days of ambix a simple explanation of the reordering 
of fuma wxyz to wyzx and adjusting the W
level by sqrootof2 ?   I know there are a few converters around but is this 
possible without a converter within a DAW - the routing
change is easy but adjusting W by 1.414 - can that be done in reaper or 
protools?

best

mick ritchie



On 18 Aug 2017, at 18:57, Wim wrote:

> It's probably USB audio compliant. Requires no drivers on any OS. An iphone
> or ipad should work with the famous "Camera connection kit" from Apple.
> With Android, YMMV, but it should also work, in principle...
> 
> 2017-08-18 18:35 GMT+02:00 Steven Boardman <boardroomout...@gmail.com>:
> 
>> Well, don’t be sure it will work with all Android devices. I have been
>> there before, but It will also work with a computer.
>> It’s $89 till the end of August, which IS what makes it interesting.
>> Not sure of the regular price of $179. I need to hear some music recorded
>> with it first….
>> 
>> It’s a good choice (for them) to use a ping pong sample, to show the
>> spatial abilities. A small emitter of mid/high frequency transients, one
>> already knows which direction it will appear next!
>> 
>> Steve
>> 
>> 
>>> On 18 Aug 2017, at 16:04, mgra...@mstvp.com wrote:
>>> 
>>> Since it's USB it must be Android-only for the moment.
>>> 
>>> Any idea the price?
>>> 
>>> Michael Graves
>>> mgra...@mstvp.com
>>> http://www.mgraves.org
>>> o(713) 861-4005
>>> c(713) 201-1262
>>> sip:mgra...@mjg.onsip.com
>>> skype mjgraves
>>> 
>>> 
>>> - Original Message - Subject: [Sursound] Cellphone
>> tetrahedral
>>> From: "Steven Boardman" <boardroomout...@gmail.com>
>>> Date: 8/18/17 2:36 am
>>> To: "Surround Sound discussion group" <sursound@music.vt.edu>
>>> 
>>> http://yun.twirlingvr.com/index.php/home/Lite/lite-en
>>> 
>>> They were also going to bring out a stand alone integrated recording
>>> solution.
>>> Will download the b-format files and listen in the studio later..
>>> Looks precarious, and prone to falling out/over/off. Especially as most
>>> usb ports are on the bottom and not that tight.
>>> 
>>> Steve
>>> -- next part --
>>> An HTML attachment was scrubbed...
>>> URL: <https://mail.music.vt.edu/mailman/private/sursound/
>> attachments/20170818/1a9c54e3/attachment.html>
>>> ___
>>> Sursound mailing list
>>> Sursound@music.vt.edu
>>> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
>> edit account or options, view archives and so on.
>>> -- next part --
>>> An HTML attachment was scrubbed...
>>> URL: <https://mail.music.vt.edu/mailman/private/sursound/
>> attachments/20170818/6e71c16e/attachment.html>
>>> ___
>>> Sursound mailing list
>>> Sursound@music.vt.edu
>>> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
>> edit account or options, view archives and so on.
>> 
>> ___
>> Sursound mailing list
>> Sursound@music.vt.edu
>> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
>> edit account or options, view archives and so on.
>> 
> -- next part --
> An HTML attachment was scrubbed...
> URL: 
> <https://mail.music.vt.edu/mailman/private/sursound/attachments/20170818/602e7cbb/attachment.html>
> ___
> Sursound mailing list
> Sursound@music.vt.edu
> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit 
> account or options, view archives and so on.

___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit 
account or options, view archives and so on.

Re: [Sursound] Muti-channel ambisonic audio in sync with video

[mick ritchie]

I have used QT7 for 1st order wavs on loop and for 8 tk tk wavs for discrete 
playback without issue  though you
should check any decoder latency when using 16 channel - 4 did have have small 
latency but not
a problem given the material involved. I use Soundflower and aggregate audio 
devices without
problem but the new "Loopback" software avoids these but im not sure yet if it 
passes multis from QT
Also with video playback matching the resolution of the file to your playback 
needs is most important followed by the codeq u choose.

Qlab is a promedia player of choice for theatres these days and will handle 
multiple videos plus 24 track
audio midi and osc.  Its advantage over a simple QT type playback is the 
ability to adjust audio playback 
to compensate for encoding latency.   You can test it for free though only in 
stereo - but you can rent it for
a few dollars to get the full mullarky for testing

mick



On 9 Sep 2016, at 03:59, ByungJun Kwon wrote:

> Thanks for the information.
> Did you try high order ambisonic encoded audio in video file?
> What was the number of audio channels that you tried in VLC( or other 
> players)?
> 
> Best, byungjun
> 
> 
> On 09/09/2016 10:17 AM, Marc Lavallée wrote:
>> It's already possible to play a multichannel audio/video file using
>> VLC (or other players) while decoding tou  ambisonic; it's a matter of
>> configuring the system to redirect the multichannel audio of the video
>> player to an ambisonic decoder, using a sound server like Jack.
>> --
>> Marc
>> 
>> On Fri, 9 Sep 2016 09:57:07 +0900
>> ByungJun Kwon  wrote:
>> 
>>> Thank you very much for all your feedback and I think it's enough
>>> information to start with.
>>> Though if I were a professional visual person, I would prefer to play
>>> it from the dedicated media player like Quicktime or VLC rather than
>>> the one which resides inside DAW. I wish someone release media player
>>> with multi-channel audio support soon.
>>> Best, byungjun
>>> 
>>> 
>>> 
>>> On 09/08/2016 08:09 PM, Steven Boardman wrote:
 You really shouldn't need another machine. If your
 processor/graphics card and your media is fast enough then there
 shouldn't be a problem. If there is, it is most certainly drive
 speed,  so use ssd/raid or both. If you video codec/playback app
 won't play that many audio channels then just import video into
 Reaper. If it must be 2 machines then use the IAC bus in core midi
 for osx, or some other midi/time code networking protocol for
 others. I use IAC all the time and it works well.
 
 Best
 
 Steve
 
 Steve
 -- next part --
 An HTML attachment was scrubbed...
 URL:
 
 ___ Sursound mailing
 list Sursound@music.vt.edu
 https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe
 here, edit account or options, view archives and so on.
>>> ___
>>> Sursound mailing list
>>> Sursound@music.vt.edu
>>> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe
>>> here, edit account or options, view archives and so on.
> 
> ___
> Sursound mailing list
> Sursound@music.vt.edu
> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit 
> account or options, view archives and so on.

___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit 
account or options, view archives and so on.

Re: [Sursound] Muti-channel ambisonic audio in sync with video

[mick ritchie]

Hi

interesting xjadeo which ive never seen but if youre using reaper u could just 
use a version on each machine and use your audio
machine to generate timecode and send to reaper on the video machine via 
network midi and have Reaper with only video on it -
I understand Reaper5 is better for video but havent used it.   In osx its all 
in the system but with windows machines
youd have to set up some network midi software to recieve or and  send.  
MidiYoke and LoopBe are in my memory but i dont which
windows os they work with and you dont mention what youre using

I use ql;ab for video things but its not cheap and only mac - but well worth it


mick
On 8 Sep 2016, at 07:52, ByungJun Kwon wrote:

> Hello list,
> I have an exhibition of playing heavy duty video file together with 16ch 
> interleaved ambisonic wave file. Audio is rendered  through reaper using 
> ambisonic decoder so each channel is just feeding to relevant 16 speakers to 
> make audio playback simple. Since video file is very heavy I'd like to have 
> separate machine for processing video and audio.
> Could anyone on the list suggest cheap(or free) solution to sync 
> multi-channel audio and video?
> 
> Best, byungjun
> 
> 
> ___
> Sursound mailing list
> Sursound@music.vt.edu
> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit 
> account or options, view archives and so on.

___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit 
account or options, view archives and so on.

Re: [Sursound] 8+ channel players ?

[mick ritchie]

Any links to this pi and usb sound module options?

mick
On 14 Dec 2014, at 13:04, Marc Lavallée wrote:

On Sun, 14 Dec 2014 07:30:17 +0100, David Pickett wrote:
 At 00:54 14-12-14, Louis Mustill wrote:
 Not used it myself but this might be of interest.
 They make lovely kit generally.
 
 http://www.sounddevices.com/products/970/
 
 I should hope so at $4,629.00!
 
 http://www.bhphotovideo.com/c/product/1044277-REG/sound_devices_970_64_track_dante_and_madi.html
 
 David

A lovely DIY kit made of a Raspberry Pi and a USB sound module (8
channels, 16bit/48Khz), with a wifi web interface, would cost less than
$200. Yet to be tested... Who would accept the challenge and report
here?
--
Marc
___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit 
account or options, view archives and so on.

___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit 
account or options, view archives and so on.

Re: [Sursound] ultra-cheap m/c USB cards for the R-Pi?

[mick ritchie]

After discussions here 18 months ago on these usb boxes I bought this  
same asonic ( though called something else)
for a premium price then of £14 and it worked through osx 10.6  
without a hiccup - I bought it for cheap playback
tests of multiple audio outputs from bidule/reaper and it worked  
after setting up the outputs in OSX with no
driver needed.  On older macs it can hiccup using 8channel out but  
set it back to 6 channel and its  fine - continual
audio dropouts on all outputs - I never got to the bottom of this.   
Ive not used dolby decodes on it but it also works for palyback with  
XP and Linux when tested originally.  It even worked with Protools9  
which was brand new when I got the box

and is the most choosy of programs

Sound quality I guess is similar or worse than standard inbuilt  
outputs - oh and the usb connection isnt deep

enough meaning it falls out if you move it

other than that it did what it says on the tin

mick
On 27 Jun 2012, at 08:01, Bo-Erik Sandholm wrote:


Maybe you are looking for something like this £ 10,37
 http://blog.rtwilson.com/review-asonic-external-usb-2-0-8-channel- 
sound-card/


-Original Message-
From: sursound-boun...@music.vt.edu [mailto:sursound- 
boun...@music.vt.edu] On Behalf Of Dave Malham

Sent: den 26 juni 2012 10:00
To: Surround Sound discussion group
Subject: Re: [Sursound] ultra-cheap m/c USB cards for the R-Pi?

Hmm - not exactly ultra cheap! The Janus A/D/A is $ 163 US for  
members of TAPR and it needs the Magister USB interface as well,  
which is $ 199 US for members of TAPR.They do give you much more  
control and it sounds like its really good kit, butanyway, if  
you want to read more, http://www.tapr.org/


 Dave


On 26/06/2012 02:51, Sampo Syreeni wrote:

On 2012-06-25, Bo-Erik Sandholm wrote:

In ultracheap, have any of you ever probed the radio amateur
circuit? I mean really probed it deep, even if some of you probably
are a part o it already. They evidently do ultracheap circuits, even
including USB interfaces, and will ship the parts and the boards  
to you at cost. Including boards with pretty bad ass A/D/A  
designs, as in what TAPR does.


--
  These are my own views and may or may not be shared by my  
employer / 
*/
/* Dave Malham   http://music.york.ac.uk/staff/research/dave- 
malham/ */

/* Music Research Centre */
/* Department of Musichttp://music.york.ac.uk/;   */
/* The University of York  Phone 01904  
322448*/
/* Heslington  Fax   01904  
322450*/
/* York YO10  
5DD */
/* UK   'Ambisonics - Component Imaging for  
Audio'   */
/*http://www.york.ac.uk/inst/mustech/ 
3d_audio/ */
/ 
*/




___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound
___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound


___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound

Re: [Sursound] online multichannel release: HTML5 test

[mick ritchie]

Hi Etienne
O

This is similar problem Ive always had with SoundofSpace AAC files  
which

use the
CLRLsRsLFE order but again I can use the Quad playback to fix the  
order.

Id much
prefer the ITU spec of LRCLFELsRs as that seems to be a sort of  
common

standard



I understand that AC3 and AAC have different channel orders by  
definition.
I'm pretty sure soundOfSpace does it correctly (for both). Are you  
talking
about Firefox in OSX with a VLC plugin? ... or are you talking  
about Safari

playing AAC natively?


I hadnt spotted a firefox vlc plugin so am using browsers natively -  
and they seem to follow my general audio prefs - having said that and  
upgrading firefox to v8 now i cant play my own ref movies at all -  
eek but it acts the same as v3.5.  Chrome I did try and it  
continually asks for plugins and shows me to too many google links  
for my liking.


The first aac file order spec seems to be what soundofspace uses but I
found much discussion online of using the more standard layout. AC3 has
to be as is because external devices are all set the same


It is ... I think what is needed is a table that identifies which 5.1
format for which browser for which OS for which stereo decode is  
best. Then

I'll implement that (and others can implement that)  and so people
could say works with Chrome 10.1 + on windows, or   etc.

Etienne


I'll have another look at the browsers as I need to get Firefox  
working again

and try a windows machine as Ive got some tests to do for binaural

mick


-- next part --
An HTML attachment was scrubbed...
URL: https://mail.music.vt.edu/mailman/private/sursound/ 
attachments/20111205/8d11d81a/attachment.html

___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound


___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound

Re: [Sursound] online multichannel release: HTML5 test

[mick ritchie]

Thanks for helps - I could see I was accessing the ogg version in my  
browsers and
when I set my speaker config correctly I can get multichanel audio  
from the html5 page no
problem.  Well there is a problem and that is the file order - with a  
5.1 config set in OSX
im seeing a LCRLsRsLFE playback but im not able to save this as a  
config and to add
to that Quicktime and VLC only play out tracks 12 and 5 - but I can  
change to

quad playback and then all 4  tracks are routed correctly.

This is similar problem Ive always had with SoundofSpace AAC files  
which use the
CLRLsRsLFE order but again I can use the Quad playback to fix the  
order. Id much
prefer the ITU spec of LRCLFELsRs as that seems to be a sort of  
common standard


On the main site Ive never been able to get a player to load with the  
AC3 play now option
though I can download them and play  back dolby digital in VLC and  
quicktime through my Yamaha
home decoder.  Using VLC is easily the best because it has its own  
encoded stereo option which saves changing
overall options and  I can it triggers the yamaha recieving it.  
Quicktime does work though but only if you
go into the terminal and set up ac3 passthrough??  hence I use VLC  
for AC3.


AC3 in OSX appears to always download rather than just playthrough -  
it will open and play in VLC but
only after downloading as well.  My use of AC3's has been mainly dvds  
for film or straight audio
for multispeaker installs ignoring 5.1 - there is an answer to the  
download issue as you can
save a vlc playlist and post as an m3u containing the urls to avoid  
ac3 downloads though ive only just tried that out.


So I dont see a particular browser problem though we are dealing with  
computer and receiver set ups -
I originally wanted to be able to  stream 4 channel files into  
soundflower without any need - for people to reset or guess channel  
order and with Ogg files the computer tended to mess with the order  
but when I used a QTreference file as the link the channel order was  
not messed with anymore - this was only tested in OSX and XP at the time



hope this is of help to someone -

mick





On 1 Dec 2011, at 22:40, etienne deleflie wrote:


Hi Mick,

If you are talking about this page:
http://soundofspace.com/static/test_html5.html

then all feeds are 5.1  if you are hearing stereo it is your  
browser
that has decided to interpret the 5.1 feed as stereo. Any settings  
for that

would be browser side.

But to find out which of the three files the browser has chosen to  
use is
difficult. On Firefox 8, I can right click on the player and do  
'copy audio
location'  (the file is the ogg one). This doesn't work on  
Safari...

not sure about Explorer

good question though  there must be a way.

Etienne


On Wed, Nov 30, 2011 at 9:14 PM, mick ritchie m...@superorg.com  
wrote:




Etienne -

I can play back stereo from your player in firefox3 and Safari but  
not 5.1

- my
5.1 box doesnt see dolby digital just stereo.  Is there any way of  
telling

which
feed my browser accesses?

mick


___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound

Re: [Sursound] online multichannel release

[mick ritchie]

Marinos - I havent a clue what a nitrate is but maybe kbs and i seem  
to remember my options

in Apack being limited so i just went for the highest as ac3's are small



On 29 Nov 2011, at 21:13, Marinos Koutsomichalis wrote:


thx Mick

I think I' ll go down the ac3 road - not shire however what nitrate  
to use.. would sth like 640 for a 4-channel file be ok ??


thx

m

On 29 Nov 2011, at 21:48, mick ritchie wrote:


Hi marinos

i missed the bginning of the debate but I went down this road 3  
years ago to stream bformat files


For your requirements with 4 channels of discrete speaker files I  
think ac3 is by far the most accessible
to anybody who has no 4 channel sound card - a digital link  
between computer and home ents system and you have
4 speaker playback without any tweaking.  Go for the highest spec  
as they are a bit limp and I remember adding 2 channels of audio  
silence to ensure all players see the same thing - also some  
players like vlc need a good one second start before theyve  
communicated youre in dolby digital to the decoder and you can  
miss the first note.


For streaming with bformat or 4 channel  files I found ogg files  
to be the best quality and I also had grief with VLC - first they  
worked then  after a week they crashed VLC over and over again - I  
just tried a couple of them and now VLC doesnt read them at all -  
something about XoX files not being good whatever that means.
I just looked online for any developments and came across many  
problems including my 2008 request that went unanswered. What I  
did find  though was that by making a QTmovie ref file to the ogg  
file I could then stream in QTPlayer and Itunes(which doesnt  
accept Ogg) that was what i used. The QTref file allows you to  
ensure the correct track allocation which ther Ogg alone wouldnt  
do. I didnt have time to test with all players and just  
recommended Quicktime which most PC users have


Now I can stream a 4 channel FLAC up to a point but FLAC was my  
preference for download - this was fine in VLC and easily streamed  
through a bformat decoder.


AAC looks interesting now and ive got some binaural experiments to  
do this week and will try it for some 4 channel while im at it.


I use audacity to make my multi track files

best

mick







On 29 Nov 2011, at 00:18, Marinos Koutsomichalis wrote:


thus far:

- I tried ac3 and it seems ok to me - VLC can playback with no  
problems
- I haven' t yet managed to encode to AAC - I get an error that  
libfaac is missing when using ffmpeg and audacity refuses to find  
the proper library - still looking for some other encoder
- I easily encoded to flac with sox but the size is huge and thus  
totally inadequate for my purposes

- ogg vorbis encode fine with sox but VLC crashes..

so 2 questions:

1. what are the right settings for a HQ quad ac3 ?? I used 44.100  
and 192k which sounds ok - but then I don' t have very good  
speakers to be sure - let aside the file is pretty small which  
means I can afford higher nitrates

2. What' s the verdict of an aac vs ac3 comparison ???


On 29 Nov 2011, at 00:12, Marinos Koutsomichalis wrote:

oh yeah I did encode them and they did seem file - but I could  
not play back them..


it was pretty easy to encode actually..

I google it a bit and there are a couple of bug reports about ogg 
+video problems - so there seems to be some problem


m

On 28 Nov 2011, at 23:01, Eero Aro wrote:


Marinos Koutsomichalis wrote:
I tried encoding to 4 channel ogg via both sox and audacity  
and VLC crashes when I try to playback for some reason,


Hmm.
I have used the encoder in the past and it worked ok
and the files played fine. Sorry, but can't remember
if I had any troubles in using the encoder. It could have
been possible that I had to to rename the two
stereo files in the same way as the Zoom H2 names
them.

Did the software encode your files anyway? Did you
get to that point?

Eero
___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound


--
Marinos Koutsomichalis
Music Research Center, University of York
Contemporary Music Research Centre (CMRC)
www.marinoskoutsomichalis.com
www.agxivatein.com
skype: marinosk_81












-- next part --
An HTML attachment was scrubbed...
URL: https://mail.music.vt.edu/mailman/private/sursound/ 
attachments/2029/42cabc6f/attachment.html

___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound


--
Marinos Koutsomichalis
Music Research Center, University of York
Contemporary Music Research Centre (CMRC)
www.marinoskoutsomichalis.com
www.agxivatein.com
skype: marinosk_81












-- next part --
An HTML attachment was scrubbed...
URL: https://mail.music.vt.edu/mailman/private/sursound/ 
attachments/2029/ae7ede95/attachment.html

Re: [Sursound] online multichannel release: HTML5 test

[mick ritchie]

Etienne -

I can play back stereo from your player in firefox3 and Safari but  
not 5.1 - my
5.1 box doesnt see dolby digital just stereo.  Is there any way of  
telling which

feed my browser accesses?

mick
On 29 Nov 2011, at 23:51, etienne deleflie wrote:


Hi Fabio,

Worked fine with Safari and Mac OSX.
I tried using jack. It immediately showed the 6 channel web  
process in the

routing window!
Also without jack it directly played back.

Could you give some background on the HTML5 implementation or on  
how you

realized this?



its simple. One of HTML5's advantages is that it is the browser that
supplies the media players. This means less need for 3rd party media
players like Flash / Quicktime / VLC etc. That means less barriers  
to entry
.. which means there is a growing chance that more people will  
'just hear'
5.1 coming out of their connected speakers (if they have them  
connected to

a 5.1 card).

Here is what the HTML5 code looks like (audio is an HTML5 tag):

audio controls=controls
  source src=someAACFile.m4atype=audio/mp4 /
  source src=someVorbisFile.ogg type=audio/ogg /
  source src=someAC3File.ac3type=audio/ac3 /

Looks like your browser does not support HTML 5.
Non HTML5 code would go here. Perhaps a quicktime plugin for the old
browsers.

/audio

The browser chooses whichever one it can play, and supplies the media
player. And that seems to be:

IE9 + : AAC
Safari: AAC
Chrome: AAC / Vorbis
Firefox 8+: none of them, but if you have VLC installed it will  
have a go

at OGG and perhaps AC3 opened in VLC.

It is Firefox that fails us here. Firefox can play Vorbis files,  
but not

multichannel ones.

Etienne




Regards

Fabio

Am 27.11.2011 um 05:08 schrieb etienne deleflie:

I've been meaning to try out HTML5's capabilities for a while,  
now seems

a

good time.

http://soundofspace.com/static/test_html5.html

This page hosts an (ambisonicaly decoded) 5.1 file in AAC and  
AC3 

using HTML5 the browser should automatically choose the one it can

support.


InternetExplorer 9 supports AAC, so does Safari and so does  
Chrome. So

that
covers around 50% of browsers. BUT ... it also covers the two  
main OSes.


Firefox is the other 50% ... and that means Ogg ... not sure if  
firefox

supports AC3 but I dont think it does.

The only question is whether or not the Browser can successfully  
stream

the

5.1 channels to the sound card connected to multiple speakers.

... any reports of success or failure would be appreciated.

Etienne
-- next part --
An HTML attachment was scrubbed...
URL: 
https://mail.music.vt.edu/mailman/private/sursound/attachments/ 
2027/ae3fafc3/attachment.html


___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound


___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound


-- next part --
An HTML attachment was scrubbed...
URL: https://mail.music.vt.edu/mailman/private/sursound/ 
attachments/2030/ac4977c0/attachment.html

___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound


___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound

Re: [Sursound] online multichannel release

[mick ritchie]

Hi marinos

i missed the bginning of the debate but I went down this road 3 years  
ago to stream bformat files


For your requirements with 4 channels of discrete speaker files I  
think ac3 is by far the most accessible
to anybody who has no 4 channel sound card - a digital link between  
computer and home ents system and you have
4 speaker playback without any tweaking.  Go for the highest spec as  
they are a bit limp and I remember adding 2 channels of audio silence  
to ensure all players see the same thing - also some players like vlc  
need a good one second start before theyve communicated youre in  
dolby digital to the decoder and you can miss the first note.


For streaming with bformat or 4 channel  files I found ogg files to  
be the best quality and I also had grief with VLC - first they worked  
then  after a week they crashed VLC over and over again - I just  
tried a couple of them and now VLC doesnt read them at all -  
something about XoX files not being good whatever that means.
I just looked online for any developments and came across many  
problems including my 2008 request that went unanswered. What I did  
find  though was that by making a QTmovie ref file to the ogg file I  
could then stream in QTPlayer and Itunes(which doesnt accept Ogg)  
that was what i used. The QTref file allows you to ensure the correct  
track allocation which ther Ogg alone wouldnt do. I didnt have time  
to test with all players and just recommended Quicktime which most PC  
users have


Now I can stream a 4 channel FLAC up to a point but FLAC was my  
preference for download - this was fine in VLC and easily streamed  
through a bformat decoder.


AAC looks interesting now and ive got some binaural experiments to do  
this week and will try it for some 4 channel while im at it.


I use audacity to make my multi track files

best

mick







On 29 Nov 2011, at 00:18, Marinos Koutsomichalis wrote:


thus far:

- I tried ac3 and it seems ok to me - VLC can playback with no  
problems
- I haven' t yet managed to encode to AAC - I get an error that  
libfaac is missing when using ffmpeg and audacity refuses to find  
the proper library - still looking for some other encoder
- I easily encoded to flac with sox but the size is huge and thus  
totally inadequate for my purposes

- ogg vorbis encode fine with sox but VLC crashes..

so 2 questions:

1. what are the right settings for a HQ quad ac3 ?? I used 44.100  
and 192k which sounds ok - but then I don' t have very good  
speakers to be sure - let aside the file is pretty small which  
means I can afford higher nitrates

2. What' s the verdict of an aac vs ac3 comparison ???


On 29 Nov 2011, at 00:12, Marinos Koutsomichalis wrote:

oh yeah I did encode them and they did seem file - but I could not  
play back them..


it was pretty easy to encode actually..

I google it a bit and there are a couple of bug reports about ogg 
+video problems - so there seems to be some problem


m

On 28 Nov 2011, at 23:01, Eero Aro wrote:


Marinos Koutsomichalis wrote:
I tried encoding to 4 channel ogg via both sox and audacity and  
VLC crashes when I try to playback for some reason,


Hmm.
I have used the encoder in the past and it worked ok
and the files played fine. Sorry, but can't remember
if I had any troubles in using the encoder. It could have
been possible that I had to to rename the two
stereo files in the same way as the Zoom H2 names
them.

Did the software encode your files anyway? Did you
get to that point?

Eero
___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound


--
Marinos Koutsomichalis
Music Research Center, University of York
Contemporary Music Research Centre (CMRC)
www.marinoskoutsomichalis.com
www.agxivatein.com
skype: marinosk_81












-- next part --
An HTML attachment was scrubbed...
URL: https://mail.music.vt.edu/mailman/private/sursound/ 
attachments/2029/42cabc6f/attachment.html

___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound


--
Marinos Koutsomichalis
Music Research Center, University of York
Contemporary Music Research Centre (CMRC)
www.marinoskoutsomichalis.com
www.agxivatein.com
skype: marinosk_81












-- next part --
An HTML attachment was scrubbed...
URL: https://mail.music.vt.edu/mailman/private/sursound/ 
attachments/2029/ae7ede95/attachment.html

___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound


___
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound