30 Jul
2010
30 Jul
'10
9:11 a.m.
I want to build a system that monitors several audio signals. It will
need to run:
alsa
jackd
meterbridge (3 stereo pairs)
alsaplayer
silentjack (3 instances)
There will be three soundcards.
Synchronicity and realtime are not important. Long-term stability (i.e.
running 24/7) is.
Silentjack will need to run scripts that send emails in the event of
prog failures
It will need to boot into a script that starts all the above.
It will not need a desktop - a straightforward windowmanager like fvwm
is sufficient.
It would be nice if it ran on elderly hardware - a PIII/733 with 512MB
is available.
I am expecting to modify meterbridge, so the existence of a binary
package is not important for that application. The others, however,
will be standard.
Any thoughts which distribution would be the best starting point?
Andrew.
30 Jul
30 Jul
9:21 a.m.
On 07/30/10 09:11, Andrew Bryant wrote:
I want to build a system that monitors several audio
signals.
[..]
Any thoughts which distribution would be the best starting point?
If you just want to monitor for the presence/absence of a certain signal
level and need ultra stability, why not do it in hardware? A simple
arduino with ethernet shield could do the trick. Running a fully fledged
computer for such a job is ecologically nonsense.
Flo
--
Machines can do the work, so people have time to think.
public key DA43FEF4 x-hkp://wwwkeys.eu.pgp.net
9:26 a.m.
New subject: [LAU] Simple monitor system: which distro?
Don't threat me as Ubuntu fan, but in kxstudio jack is made to be a fundament of
entire audio system. Its initial environment - KDE, but functionaly, about which I am
writing, doesn't depend on any DE.
It has script, kxstudio-session-start, which starts entire audio system - jack, alsa
bridge, pulseaudio. Currently it also has support for startup session (requires LADISH,
which already included to LiveDVD). E.g., you may create some configuration, which should
includes, besides other things, a2j, and use it on startup.
Initial LADISH version is 0.2, but in repository also ladish-git (0.3) is available.
10 a.m.
On 07/30/2010 09:26 AM, Mike Cookson wrote:
Don't threat me as Ubuntu fan, but in kxstudio
jack is made to be a fundament of entire audio system. Its initial environment - KDE, but
functionaly, about which I am writing, doesn't depend on any DE.
It has script, kxstudio-session-start, which starts entire audio system - jack, alsa
bridge, pulseaudio. Currently it also has support for startup session (requires LADISH,
which already included to LiveDVD). E.g., you may create some configuration, which should
includes, besides other things, a2j, and use it on startup.
Initial LADISH version is 0.2, but in repository also ladish-git (0.3) is available.
To be honest, and I do not mean to be disrespectful towards the creator
of KXStudio, I would not use KXStudio if you're looking for long-term
stability. I think even the creator of KXStudio would agree, he puts out
an unconventional (KDE, JACK as default sound daemon for all apps)
bleeding edge distro that doesn't really aim at being ultra stable.
Best,
Jeremy
9:45 a.m.
Excerpts from Andrew Bryant's message of 2010-07-30 09:11:38 +0200:
I want to build a system that monitors several audio
signals. It will
need to run:
alsa
jackd
meterbridge (3 stereo pairs)
alsaplayer
silentjack (3 instances)
There will be three soundcards.
Synchronicity and realtime are not important. Long-term stability (i.e.
running 24/7) is.
Silentjack will need to run scripts that send emails in the event of
prog failures
It will need to boot into a script that starts all the above.
It will not need a desktop - a straightforward windowmanager like fvwm
is sufficient.
It would be nice if it ran on elderly hardware - a PIII/733 with 512MB
is available.
I am expecting to modify meterbridge, so the existence of a binary
package is not important for that application. The others, however,
will be standard.
Any thoughts which distribution would be the best starting point?
Andrew.
Any that gives you a minimal system to start with. I guess there are
many choices. The distro I use, Arch Linux, installs no alsa, X or
anything by default, you can add all that later. Meterbridge is
available as a script that builds the package from source [1] (and so is
jmeters, case that helps). Silentjack isn't in any repo, but it's
relatively easy to write a script that builds a package for you.
[1] http://aur.archlinux.org/packages/meterbridge/meterbridge/PKGBUILD
Maybe look at something like gentoo, I guess it starts out minimal as
well. A distro specifically for older hardware might be a good idea too.
--
Philipp
--
"Wir stehen selbst enttäuscht und sehn betroffen / Den Vorhang zu
und alle Fragen offen." Bertolt Brecht, Der gute Mensch von Sezuan
2:40 p.m.
Hi Andrew,
On Fri, 30 Jul 2010, Andrew Bryant wrote:
It will need to boot into a script that starts all the
above.
I recommend doing this as a startup script and having it run
as a daemon.[1]
It would be nice if it ran on elderly hardware - a
PIII/733 with 512MB is
available.
FWIW, I have a "main recording system" that is PIII/500 with
512 MB, running blackbox for the WM. :-) So, there
should be no problem with this hardware.
I am expecting to modify meterbridge, so the existence
of a binary package is
not important for that application. The others, however, will be standard.
Any thoughts which distribution would be the best starting point?
Whichever one you're comfortable with. Any linux should be
able to fit this bill. I think it's easy to admin a
headless Debian system from the command line -- but I'm also
a command line junkie.
Several of the packages you listed aren't well-adopted. If
I were you, I would just compile them myself. Sometimes,
even if a binary package is avail. it will be out of date.
Most of those packages will also compile in about 5 minutes
or less.
-gabriel
[1]
http://www.cyberciti.biz/tips/linux-write-sys-v-init-script-to-start-stop-s…
3:09 p.m.
Excerpts from Gabriel M. Beddingfield's message of 2010-07-30 14:40:04 +0200:
--
Philipp
--
"Wir stehen selbst enttäuscht und sehn betroffen / Den Vorhang zu
und alle Fragen offen." Bertolt Brecht, Der gute Mensch von Sezuan
Hi Andrew,
On Fri, 30 Jul 2010, Andrew Bryant wrote:
Doesn't this imply running jack as root or in promiscuous mode? That
sounds like a bad idea to me. It's probably as easy to auto-login a user
and script startup of everything from there, xinitrc or whatever, there
are many choices.
It will need to boot into a script that starts
all the above.
I recommend doing this as a startup script and having it run
as a daemon.[1] It would be
nice if it ran on elderly hardware - a PIII/733 with 512MB is
available.
FWIW, I have a "main recording system" that is PIII/500 with
512 MB, running blackbox for the WM. :-) So, there
should be no problem with this hardware.
I am expecting to modify meterbridge, so the
existence of a binary package is
not important for that application. The others, however, will be standard.
Any thoughts which distribution would be the best starting point?
Whichever one you're comfortable with. Any linux should be
able to fit this bill. I think it's easy to admin a
headless Debian system from the command line -- but I'm also
a command line junkie.
Several of the packages you listed aren't well-adopted. If
I were you, I would just compile them myself. Sometimes,
even if a binary package is avail. it will be out of date.
Most of those packages will also compile in about 5 minutes
or less.
-gabriel
[1]
http://www.cyberciti.biz/tips/linux-write-sys-v-init-script-to-start-stop-s…
3:42 p.m.
On Fri, 30 Jul 2010, Philipp Überbacher wrote:
Doesn't this imply running jack as root or in promiscuous mode? That
No. start-stop-daemon(8) has a --chuid argument so that you
can change the user ID of the daemon process.
Anyway, it's just a suggestion.
-gabriel
It will need to boot into a script that starts all the
above.
I recommend doing this as a startup script and having it run
as a daemon.[1]
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days inactive
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linux-audio-user@lists.linuxaudio.org
7 comments
6 participants
participants (6)
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Andrew Bryant -
Florian Faber -
Gabriel M. Beddingfield -
Jeremy Jongepier -
Mike Cookson -
Philipp Überbacher