so far I cant find reports on LAC 2007 on Blogs or newspages, neither on
Linux related nor electronic music ones. Tonight I want blog myself some
(subjective) impression and would like to gather some nice photos, I
have only done some crappy images with my mobile. Then I would start to
bother other blogs to write about it, normally the interest is there.
media art + development
On Mar 31, 2007, at 5:26 AM, Jens M Andreasen wrote:
> What I wonder is; wouldn't it be possible to bypass this USB radio
> transmitter/recaiver dongle-thingie and fast forward to the wireless
> capabilities already built in to most of modern portable devices sold
> today? Hey, even the OLPC aimed at third world children have this
> capability ...
If you access to two OS X machines for a few minutes, run the
Network MIDI Driver over Airport (Network MIDI Driver described here:
You'll see it works OK, even with the 1-2% packet loss that the IP
layer sees on a typical WiFi network. Apple's implementation uses
IETF RFC 4695 (a.k.a. RTP MIDI) as the transport layer, which
includes a resiliency system (the recovery journal) for handling
an arbitrary number of lost packets with only transient artifacts.
More on RTP MIDI here:
Note that there are actually third-party products now compatible
with Apple's protocol, although these products are for wired networks.
And, last time I checked didn't implement the recovery journal
part of the RTP MIDI (and so can't be trusted over switches that
lose packets -- although my info on the product might be out of date):
> It kind of puzzles me that this is not happening already ...
I haven't looked into the issue in detail, but for my own use wireless
only makes sense if I don't have to be constantly worrying about
the battery life of the device. At the moment, what I see in
the state of the art in portable WiFi chips -- the chip in the Sony
PSP and the chip in the Microsoft Zune -- is not too encouraging
in this regard. But hopefully in a few generations of chip designs
this will get better. This review:
make the point well of how limiting the battery life can be for
a MIDI wireless controller right now.
lazzaro [at] cs [dot] berkeley [dot] edu
Long overdue but better late than never:
QjackCtl, the good old Qt GUI interface to JACK Audio Connection Kit is
back on a new latest dot releasse.
As read from the changelog:
- Fixed default settings for the freebob backend (JACK >= 0.103.0).
- CPU Load status label now says correctly DSP Load.
- The most recently used patchbay definitions can now be correctly
selected in round-robin fashion from its drop-down list widget.
- Avoid mixing JACK MIDI ports with regular audio ports on the
Connections and Patchbay widgets; strictly list only audio ports.
- Added 192k sample rate to setup settings drop down list (as kindly
reminded by Klaus Zimmermann, thanks).
- Most top-level widgets were missing the normal-widget flag, which were
causing some sticky size behavior on some window managers.
rncbc aka Rui Nuno Capela
New releases and updates at <http://www.kokkinizita.net/linuxaudio>
Aliki-0.0.3 Impulse response measurement.
- Many bug fixes, should be a bit more stable now...
- Added flexible export options.
- Manual updated.
Jace-0.0.4 Low-weight convolution engine for JACK and ALSA.
- Now includes configuration and IR files for stereo dipole
processing using the filters designed by E. Choueiri of
Princeton University. These are the best filters available
AmbDec-0.0.1 1st and 2nd order Ambisonic decoder.
- First release. Universal decoder with many advanced
features. PDF manual also available.
Follie! Follie! Delirio vano è questo !
My question is if there's any high-level sound API for python. I don't
want to process audio. Instead I'm looking for an API (or a combination
thereof) which could be used to implement a small media player feeding
several backends (ALSA, OSS, ...)
After a little search I found pyMedia (www.pymedia.org) which looks like
a real winner. But if I'm not wrong it supports OSS only.
Thanks for your input.
Dennis Schulmeister - Schliffkopfweg 12 - 76189 Karlsruhe - Germany
Tel: 0721/5978883 - Fax: 0721/5705992 - dennis(a)windows3.de
http://www.windows3.de - http://www.denchris.dehttp://www.audiominds.com - http://www.motagator.net/bands/65
I have noticed that it getting increasingly popular to produce wireless
midi-controllers. M-Audio have a couple and CME appears to go along with
them with some of their products. From the PR-blurbs I reckon that they
both use the same patented technology.
What I wonder is; wouldn't it be possible to bypass this USB radio
transmitter/recaiver dongle-thingie and fast forward to the wireless
capabilities already built in to most of modern portable devices sold
today? Hey, even the OLPC aimed at third world children have this
Are there any pitfalls like, say unreliable timing using standard
protcols over wireless? Why would we like to use transmitter -> receiver
-> USB -> computer, if we could just go for transmitter -> receiver
using the chips already present on the motherboard?
There is of course one slight problem, as of yet, no midi-keyboard has a
general purpose builtin wireless radio.
With any luck, it could be so fortunate that some lurker on this list
recognizes a busines-opportunity .. or perhaps one of you guys could
mention the idea next time you share a private moment with one of the
It kind of puzzles me that this is not happening already ...
JackMix, the ultimate mixer app for jack hits another milestone:
"Sliders vs. Knobs"
From the "programming during Linux-Audio-Conference"-depth. comes the
next release of JackMix.
Whats new since 0.2?
Inspired by a lot of talking during LAC I have redone the sliders.
They still look kind of similar to some vu-meters but I think it isn't
that bad anymore.
But there are new knobs in this version too. They did get positive
feedback during the conference. :-)
The knobs from 0.2 didn't seem to scale well. At least not from the
The biggest change is that version 0.3 saves the own state to
xml-files which can be read again later. Also adding a filename on the
commandline opens that file on startup. This enables version 0.4 to
And there is a new interface so backend can interact with the gui in a
better way. The main effect now is that if jackd is not running its
not the jackmix mainwindow that is complaining but the backend popping
up a message.
Visit http://www.arnoldarts.de/drupal/?q=node/568 to find more. See
screenshots or just download the package from
Have a nice weekend,
Wenn man mit Raubkopien Bands wie Brosis oder Britney Spears wirklich
verhindern könnte, würde ich mir noch heute einen Stapel Brenner und
einen Sack Rohlinge kaufen.
I am proud to announce that we will proceed with the list migration
during the night between the 31st March and the 1st April (at 0h00
>From this point on, emails should be sent to these addresses :
- linux-audio-dev(a)lists.linuxaudio.org for the developper mailing list
- linux-audio-user(a)lists.linuxaudio.org for the user mailing list
- linux-audio-announce(a)lists.linuxaudio.org for the announce mailing list
The following aliases have been defined, to make it look nicer.
Consider them as shorter equivalents :
- lad(a)lists.linuxaudio.org for the developer mailing list
- lau(a)lists.linuxaudio.org for the user mailing list
No alias for the announce list since it is an open list (non
subscribers are allowed to post) and we fear a increase in spam with a
too short name.
Also, to respond to a request to a few of you working with command
line mail clients, the list tag at the beginning of the subject line
will be shortened :
[LAD] for linux-audio-dev
[LAU] for linux-audio-user
[LAA] for linux-audio-announce
You may need to update your email filters accordingly.
Those of you posting on the old addresses will get a message providing
you with the new email to use.
*the 5th International Linux Audio Conference *is *over.* The lac
organization team 2007 had a busy but good time and we hope you enjoyed
your stay in Berlin too. *As always many thanks to all participants,
speakers, artists, partners and helpers! *This great event would not
have been possible without your help. During the conference Martin
Rumori and Frank Barknecht of the Academy of Media Arts offered to host
the LAC2008 in Cologne. So see you all in cologne next year and the best
wishes from Berlin.
We started to put up some pictures from the lac here:
If you have made some nice pictures they can be added here as well.
Please send them to: lac2007(a)kgw.tu-berlin.de
We have added a page on the LAC wiki where you can post your ideas and
comments regarding the Linux Audio Conference. This could be helpful to
the organizers of the upcoming ones and interesting to the ones who
organized the lac2007.