Linux-audio-dev

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7501 discussions

Fwd: [SIGMM] ACM Multimedia 2007 - Call for Open Source Software Competition

by David García Garzón

---------- Forwarded Message ---------- Subject: [SIGMM] ACM Multimedia 2007 - Call for Open Source Software Competition Date: Divendres 11 Maig 2007 From: Apostol Natsev <natsev(a)us.ibm.com> To: sigmm(a)pi4.informatik.uni-mannheim.de Call for Open Source Software Competition ACM Multimedia 2007 University of Augsburg Augsburg, Germany September 23 - 29, 2007 http://www.acmmm07.org The 15th Annual ACM International Conference on Multimedia (MM 2007) will be held in Augsburg, Germany, September 23-29, 2007. ACM Multimedia is the premier technical multimedia conference attended by an international community of researchers from both academia and industry. For this conference, we are soliciting submissions to the Open Source Software Competition. The competition celebrates the invaluable contribution of researchers who advance the field by providing the community with implementations of codecs, middleware, frameworks, toolkits, libraries, and other multimedia software. To qualify, software must be provided with source code and licensed in such a manner that it can be used free of charge in academic and research settings. For the competition, the software will be built from the sources. In order to encourage participation, past non-winning entries are encouraged to submit again in the future. Student-led efforts are particularly encouraged. Authors of the winning entry will be recognized formally at ACM Multimedia 2007, awarded a prize (to be announced), and invited to demonstrate their software as part of the conference demonstration program. For more details and submission instructions, please see http://mmc36.informatik.uni-augsburg.de/acmmm2007/html/source_competition.h… Key Dates: --------- June 1, 2007 Submission Deadline June 20, 2007 Notification of Acceptance With kind regards, Apostol (Paul) Natsev, Open Source Software Competition Chair ----- Apostol (Paul) Natsev, Ph.D. Research Staff Member IBM Watson Research Center 19 Skyline Drive, Hawthorne, NY 10532 http://www.research.ibm.com/people/n/natsev Tel: (914) 784-7541/Fax: (914) 784-7455 _______________________________________________ SIGMM mailing list SIGMM(a)pi4.informatik.uni-mannheim.de http://www.informatik.uni-mannheim.de/mailman/listinfo/sigmm ------------------------------------------------------- -- David García Garzón (Work) dgarcia at iua dot upf anotherdot es http://www.iua.upf.edu/~dgarcia

18 years, 1 month

OFFTOPIC - seven/sixteen EP released (done with some of your favorite open-source tools)

by Niklas Klügel

Hey! I've been working for 3 years on an album from which I released 7 tracks as a promotional EP. Some of the music was created with the tools you guys develop like csound, pd, seq24 etc. So see that work as a big thanks for your efforts! I hope to find some time to go on with LAD when the other 9 tracks are mastered. http://www.jamendo.com/de/album/5529/ So long, thanks&enjoy ... NIklas

18 years, 1 month

Problem compiling jackd

by Julien Claassen

Hi! I just tried to compile jack-svn-snapshot (23.04.2007) and got the following error: [...] time.c: In function `jack_get_microseconds_from_system': time.c:83: error: `CLOCK_MONOTONIC' undeclared (first use in this function) time.c:83: error: (Each undeclared identifier is reported only once time.c:83: error: for each function it appears in.) gmake[2]: *** [libjack_la-time.lo] Error 1 [...] Any idea on tis? I'm running 2.6.16.2 kernel. I imagine the problem lies there somewhere. Kindest regards Julien -------- Music was my first love and it will be my last (John Miles) ======== FIND MY WEB-PROJECT AT: ======== http://ltsb.sourceforge.net the Linux TextBased Studio guide ======= AND MY PERSONAL PAGES AT: ======= http://www.juliencoder.de

18 years, 1 month

Re: [LAD] Searching information about: denomals HUGE NaN Inf

by Sampo Savolainen

Quoting Steven Chamberlain <steven(a)pyro.eu.org>: > audio-mobster wrote: > > can someone tell me where I get infomation about: denomals HUGE NaN > Inf? > > Description of denormals etc., and how they're represented in memory: > http://en.wikipedia.org/wiki/IEEE_754#Single-precision_32_bit > > As for tackling denormal issues: > http://music.columbia.edu/pipermail/linux-audio-dev/2003-August/004581.html > http://music.columbia.edu/pipermail/linux-audio-dev/2004-June/008739.html > > The FLUSH_TO_ZERO(x) macro can be seen used in TAP's tap_utils.h The DAZ bit in the processor is often more efficient. See: http://www.intel.com/cd/ids/developer/asmo-na/eng/microprocessors/ia32/pent… For a basic introduction to what denormals are and how they affect the life of music production: http://ardour.org/node/139 Sampo

18 years, 1 month

Searching information about: denomals HUGE NaN Inf

by audio-mobster

Hello, can someone tell me where I get infomation about: denomals HUGE NaN Inf? Thanks in advance Uli

18 years, 1 month

freehand notation system

by Christian Schoenebeck

Hi! Does anybody know a freehand notation system (no matter if free or commercial) beside this one: http://www.freehandsystems.com ? Or do you probably know open source software system(s) that could reach the same features with a *reasonable* low amount of work? CU Christian

18 years, 1 month

[ANN] jack_mixer version 3

by Nedko Arnaudov

jack_mixer version 3 released. jack_mixer is GTK (2.x) JACK audio mixer with look similar to it`s hardware counterparts. It has lot of useful features, apart from being able to mix multiple JACK audio streams. Changes since version 2: * Detect NaNs * Dont mix nan sample and next samples in current jack frame (only messed channel) * Show NaNs to user (abspeak goes red and shows NaN) * Reset channel NaN status on abspeak reset * Switch to autotools (prepare for JACK MIDI support) Homepage with screenshots: http://home.gna.org/jackmixer/ Download: http://download.gna.org/jackmixer/ -- Nedko Arnaudov <GnuPG KeyID: DE1716B0>

18 years, 1 month

New Post or what ...

by Jens M Andreasen

Rejected, OK ... Sorry but; Really, this worked the first week after migration, what's up now? Is it that it took me this long to respond to the Berlin-TU event? please, I am an old man and can't move my braincells - let along my email accounts - that fast anymore .. :-D /jens m --

18 years, 1 month

ANN: buzztard-0.2.0 released

by Stefan Kost

hi, The buzztard team has release version 0.2 "sunrise" of its buzz-alike music composer. This version has lots of UI usability improvements, bug fixes, more instant apply settings and introduces some interactivity features (interaction controller and upnp playback controller). The gstreamer extension modules got two new interfaces for presets and help. A Fluidsynth generator plugin has been started. project-page: http://www.buzztard.org screenshots: http://www.buzztard.org/index.php/Screenshots downloads : http://sourceforge.net/project/showfiles.php?group_id=55124 buzztard core developer team -- http://www.buzztard.org

18 years, 1 month

Libraries for simple audio programming, libao, other options?

by Stephen Cameron

Hi, About a week ago, out of boredom, I started working on little retro-styled '80s kind of video game, written in a pretty simple-minded way with gnome, and the graphics done just by using line drawing primitives. It was just something to do, I didn't imagine it would amount to anything. Well, it's turning out surprisingly well (not great, but better than I was expecting.) So now I'm thinking to add sound, but apart from some MIDI programming, I really haven't done any audio programming before (unless you count some Extended BASIC code on a ti99/4a back in the '80s -- and nobody would count that.) So, I found libao ( http://xiph.org/ao/doc/ ) which looks nice and simple, and the sample program I tried ( http://xiph.org/ao/doc/ao_example.c ) worked right off the bat, and the idea of synthesizing my own sounds by constructing waveforms using sine waves is appealing for a retro styled app like mine (though I have no experience doing that and only a vague memory of trigonometry), but I wonder about how to mix sound (add the waveforms, I guess) and construct them on the fly (or trigger pre-computed chunks of audio). In the example code, it plays a one second chunk of audio with one library call initiating the playback. So, I imagine that for a game, in order to satisfy the real-time-ish requirements, I'd instead construct maybe 1/10th or 1/20th second chunks, which would be queued up in my program for playback, and whenever some event happens which demands some sound be produced _right now_ (like the user presses the "fire" button, and so needs some bleeping laser gun sounds to be produced) I would then start adding (arithmetic addition) laser-gun-waveform-data into whatever chunks were already in the queue, and so out would come the sound... Does that seem like a reasonable approach? By chopping the sound up into 1/10t or 1/20th second chunks, am I apt to cause distortion of some kind? Is there some other library I might be better off with? (I looked at SDL, but it seems heavily tilted towards graphics, and I already have the graphics stuff going alright under just regular old gnome.) I might also want to playback some ogg encoded files for maybe prerecorded sound effects and music to be mixed in with the synthesized sound effects. libao won't do that by itself, but I think there are some other libs on xiph.org that do that, but I'm not sure how well they'd accomodate mixing random bits of sound in with them. Saw this: http://www.underbit.com/products/mad/ fixed point mpeg decoder library... Not sure how easy it'd be to mix in other sounds with its output. Maybe just decode into memory buffer. Anyway, just looking for suggestions, esp. if what I've described so far seems wrong. -- steve __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

18 years, 1 month

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Linux-audio-dev