Filipe Coelho | 25 Oct 03:20 2014
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[LAU] Carla Plugin Host 2.0-beta3 released!

Just bringing the news...
http://kxstudio.sourceforge.net/News/?action=view&url=carla-20-beta3-is-here

This is the 3rd beta of the upcoming Carla 2.0 release.
There have been quite a few nice features implemented since beta2.
  - Internal patchbay mode
  - Carla as VST plugin (Linux only)
  - Carla LMMS plugin
  - New and updated skins
  - Old non-skin mode

To download binaries or source code, jump into the KXStudio downloads 
section. [1]
If you're using the KXStudio repositories, you can simply install 
"carla-git" instead (plus "carla-lv2" and "carla-vst" if you're so 
inclined).
Bug reports and feature requests are welcome! Jump into the Carla's 
Github project page for those. [2]

See the top link for more details and screenshots.

-----------------------------------------------------------

[1] http://kxstudio.sourceforge.net/Downloads
[2] https://github.com/falkTX/Carla
Atte | 24 Oct 20:24 2014
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[LAU] Music made with linux: a773/sportin' life

Hi

New track out, hope you enjoy!

http://soundcloud.com/a773/sportin-life

In case you wanna download and/or support:
http://a773.bandcamp.com/track/sportin-life

--

-- 
Atte

http://atte.dk   http://a773.dk
F. Silvain | 24 Oct 14:23 2014
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[LAU] [OT] Bash (shell) security issues

Hey hey everyone,
I hreard, that the Bash (Bourne Again shell) had a vital security issue, that 
was only fixed very recently. So if you rely on Bash better update. I _THINK_ 
the problem was only fixed last week or so. Let your friends know! :)

Don't ask me about specifics, I just got the info and passed it along, since 
it sounded like good advice.

Thanks and sorry for the OT.

Ta-ta
----
Ffanci
* Internet: http://freeshell.de/~silvain
raf | 24 Oct 10:46 2014
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[LAU] zita-njbridge > zita-nabridge ?

Hello,

I have a situation in mind : in a LAN a central computer running jack server with a lot of audio I/O, and
lightweight clients with stereo I/O.
I'd like those clients to be able to send a receive 2 channels of audio to the central jack server, lowest
latency possible.

With the zita-njbridge and jack server running on the lightweight clients, it works, but considering i
don't need the jack server on the lightweight clients (no effect plugins, no routing, no synths...) could
a zita-nabridge exist to capture/override the streams from the client's embedded alsa device ?

Raphaël
http://www.jerashmusic.fr
Leonardo Gabrielli | 22 Oct 13:06 2014
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Re: [LAU] Small instrument hardware module


On 22/10/2014 11:45,
linux-audio-user-request@... wrote:
> In my experience there's a greater risk of overheating without a fan and
> the ARM (allwinner) chipsets are prone to that. My bet is a low power x86
> processor/unit with a (quiet) fan will out perform and outlast an ARM
> chipset without.
I did some simple benchmarks on a Allwinner A20 board (cubieboard) 
recently. The benchmark consist of computing a bunch of sine oscillators 
(second order resonator filter), generally used for modal synthesis and 
other types of sound synthesis. The results I got from the A20 when 
clocked at 1GHz are suprisingly good: 1000 theoretical oscillator can be 
computed in a 128 samples period, while on my quad core-i5 I get 1500. 
On a 7-years onld Centrino Duo I get about 850. While this don't stand 
as a real-world benchmark (buffer transfers are not taken into account) 
and I haven't optimized for the architectures (but just let g++ go with 
-O2) you get the idea.

I didn't experience overheating on the A20 but the tests are not 
continuous as you would during a performance, so I won't bet it will 
last long. :)

I have a sensation that generally the kernel is also quite unstable on 
most platforms unless a silicon manufacturer is there to help (as it 
happens with some TI chips) and in general I would prefer Intel for 
reliable live performance. However as a researcher I am trying to 
squeeze ARMs to perform as musical instruments and I think they can work 
well if the industry supports kernel development. But I'm wondering if 
this will continue to happen, since the eastern mobile market is 
crushing the sales of the reliable manufacturers.
(Continue reading)

Patrick Shirkey | 22 Oct 09:56 2014

[LAU] The Passion of Raul

Hi,

Something for Halloween.

Raul is a Vampire who is driven by his unquenchable passion in the dead of
night.

https://www.youtube.com/watch?v=2KJTGA4S0zQ

This is a re-edit of an earlier private work titled "Rauls Redeption" by
Volker Allert, http://volkerallert.eu, a renown physical effects creator
for the Hollywood film industry.

All audio recorded with Linux tools and edited in Blender on Linux of course.

--
Patrick Shirkey
Boost Hardware Ltd
Will Godfrey | 21 Oct 19:12 2014
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[LAU] A survey if you don't mind

I'm posting this in a number of places to try and get some idea of ALSA/JACK
usage, so I'd be grateful for responses.

https://www.surveymonkey.com/s/JZVV7K9

--

-- 
Will J Godfrey
http://www.musically.me.uk
Say you have a poem and I have a tune.
Exchange them and we can both have a poem, a tune, and a song.
Ivica Bukvic | 21 Oct 14:40 2014
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[LAU] ANN: SEAMUS 2015 -- Call for submissions

Apologies for x-posting:

The SEAMUS 2015 conference will be held at Virginia Tech during March 26-28, 2015. The conference theme is "Emotion and Electroacoustic Music." The submission deadline is October 31, 2014. Please see http://seamus.music.vt.edu/main/ for further details on the conference, and http://www.seamusonline.org/ for further information about SEAMUS.

Any questions regarding the conference may be directed to seamus <at> music.vt.edu.

Best,

Ico

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Linux-audio-user@...
http://lists.linuxaudio.org/listinfo/linux-audio-user
Vaclav Mach | 21 Oct 13:20 2014

[LAU] ALSA and RME Raydat troubleshooting

Hi all,

I'm the team leader of Voice Communication Systems development in ARTISYS company. We try to utilize RME
RayDat sound device on Linux system with ALSA sound interface. After a lot of experiments we are not able to
set up proper sound output from this device, so we kindly ask you for a help to solve our problem. Here is a
brief description:

General task of our troubleshooting is that our audio signal output is not continuous. The output signal is
rather interrupted. Here is our configuration:

PC with Linux (kernel v. 3.17.0) with ALSA sound libraries compiled in kernel. We have also additional
packages installed: alsa-tools, alsa-utils and alsa-lib (all version 1.0.28).

Inside the PC there is PCI Express card RME Raydat, whose drivers are also compiled in the Linux kernel. This
interface is connected by optical fibres (ADAT) to the Ferrofish A16 MK-II (2 pairs of TOSLINK cables).

Playing test files using commands

aplay -D pcm.out_test -r 48000 -f S32_LE /usr/share/sounds/alsa/Front_Left.wav -vv 
and
aplay -D pcm.out_test2 -r 48000 -f S32_LE /usr/share/sounds/alsa/Front_Right.wav -vv

causes audible interruptions. The configuration of the ALSA device is following:

pcm.out_dmix {
	type dmix
	ipc_key 56874
	ipc_key_add_uid false
	ipc_perm 0666
	slave {
		pcm "hw:2,0"
		period_size 2048
		channels 36
		rate 48000
	}
	bindings {
		0 0 # from 0 => to 0
		1 1 # from 1 => to 1
	}
}

pcm.out_test {
	type plug
	slave.pcm "out_dmix"
	ttable.0.0 1
}

pcm.out_test2 {
	type route
	slave.pcm "out_dmix"
	ttable.0.1 1
}

Let me describe other two example experiments:

1. If I try to record sound using the same parameters as out_dmix device but of type "dsnoop" (equivalent of
dmix for capturing), there are no interruptions and the recorded sound is perfect.

2. If I play single sound file to the output of the RME card while the ALSA device is of type "route", the sound
output is perfect. Playing second file on different output channel this way I'm not able to open
other output channel simultaneously by another program because the device is busy. There is this
experiment's ALSA device configuration:

pcm.out_test {
	type route
	slave.pcm "hw:2,0"
	slave.format "S32_LE"
	slave.channels 36
	ttable.0.0 1
}
pcm.out_test2 {
	type route
	slave.pcm "hw:2,0"
	slave.format "S32_LE"
	slave.channels 36
	ttable.0.1 1
}
This should be solved by "dmix" type ALSA device, which currently causes interruptions in our configuration.

The question is: how can we play multiple audio streams to multiple output channels using our equipment?

Thank you. 
Dear Mr. Knoth,

I'm the team leader of Voice Communication Systems development in ARTISYS company. We try to utilize RME
RayDat sound device on Linux system with ALSA sound interface. After a lot of experiments we are not able to
set up proper sound output from this device, so we kindly ask you for a help to solve our problem. Here is a
brief description:

General task of our troubleshooting is that our audio signal output is not continuous. The output signal is
rather interrupted. Here is our configuration:

PC with Linux (kernel v. 3.17.0) with ALSA sound libraries compiled in kernel. We have also additional
packages installed: alsa-tools, alsa-utils and alsa-lib (all version 1.0.28).

Inside the PC there is PCI Express card RME Raydat, whose drivers are also compiled in the Linux kernel. This
interface is connected by optical fibres (ADAT) to the Ferrofish A16 MK-II (2 pairs of TOSLINK cables).

Playing test files using commands

aplay -D pcm.out_test -r 48000 -f S32_LE /usr/share/sounds/alsa/Front_Left.wav -vv 
and
aplay -D pcm.out_test2 -r 48000 -f S32_LE /usr/share/sounds/alsa/Front_Right.wav -vv

causes audible interruptions. The configuration of the ALSA device is following:

pcm.out_dmix {
	type dmix
	ipc_key 56874
	ipc_key_add_uid false
	ipc_perm 0666
	slave {
		pcm "hw:2,0"
		period_size 2048
		channels 36
		rate 48000
	}
	bindings {
		0 0 # from 0 => to 0
		1 1 # from 1 => to 1
	}
}

pcm.out_test {
	type plug
	slave.pcm "out_dmix"
	ttable.0.0 1
}

pcm.out_test2 {
	type route
	slave.pcm "out_dmix"
	ttable.0.1 1
}

Let me describe other two example experiments:

1. If I try to record sound using the same parameters as out_dmix device but of type "dsnoop" (equivalent of
dmix for capturing), there are no interruptions and the recorded sound is perfect.

2. If I play single sound file to the output of the RME card while the ALSA device is of type "route", the sound
output is perfect. Playing second file on different output channel this way I'm not able to open
other output channel simultaneously by another program because the device is busy. There is this
experiment's ALSA device configuration:

pcm.out_test {
	type route
	slave.pcm "hw:2,0"
	slave.format "S32_LE"
	slave.channels 36
	ttable.0.0 1
}
pcm.out_test2 {
	type route
	slave.pcm "hw:2,0"
	slave.format "S32_LE"
	slave.channels 36
	ttable.0.1 1
}
This should be solved by "dmix" type ALSA device, which currently causes interruptions in our configuration.

The question is: how can we play multiple audio streams to multiple output channels using our equipment?

Thank you. 
Yours sincerely

Ing. Vaclav Mach
Voice Communications System team leader
ARTISYS
www: http://www.artisys.aero    
Benoît Rouits | 20 Oct 23:32 2014
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[LAU] [OT] loudspeaker enclosure design software, testers welcomed.

Hello,

A long time i didn't post here, and now for something a bit OT:
I just finished to write a tiny Qt based software for DIYers on
loudspeaker enclosure design, under Linux. It is inspired by the
discontinued gspeakers Gtk+ based software. For the moment it has
basic only features, but it is usable, though there is a long TODO.
I you are interested, (and if some debian packager is around here, 
[whisling] ;-) you can checkout the svn tree and try it yourself:

$ svn co https://dbx.gtmp.org/svn/qspeakers/ [*]
$ cd qspeakers; qmake -config release && make && sudo make install
(it will install in /usr/local/..)

There is a 4 or 5 speakers DB for a start, but it won't be visible
if qspeaker is not _installed_. After installation, first run will
copy the DB into  ~/.local/share/data/Herewe/QSpeakers so that you
can edit it with your own speaker's Thiele-Small parameters.

Thank you for trying !
- Ben

[*] thanks to Mid', a friend of mine, who gave me some space on his server.
rosea grammostola | 20 Oct 11:18 2014
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[LAU] Small instrument hardware module

Hi,

Is it possible to install JACK etc. and for instance Pianoteq on a device like this, to create your own instrument module?

http://www.rikomagic.com/en/product/showpro_id_58_pid_22.html


Regards,
Dirk
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