Linux-audio-dev

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7513 discussions

[linux-audio-dev] [ann] Test your ogg players at IRCAM's Resonances online off festival!

by Frank Barknecht

Hallo, today the IRCAM Resonances festival started. I don't know how many of these concerts will be done with Linux (maybe none...) but there are several Pd sessions, so they at least *could* be done on Linux. Below is the announcement as posted by Guillaume Boutard on pd-list. Beware, that there was/is a mistake on the Streaming-page: The real URL for the ogg-stream is http://reseaunances.ircam.fr:8000/reseaunances.ogg Currently there is some terribly beautiful music by Yoshihiro HANNO streaming... Resoffnances, Ircam Resonances online off festival, will take place from the 16th of october to the 24th. Resoffnance is a streamed-only festival. Gigs will be broadcast from an IRCAM office and will ONLY be available online. There will be no audience at IRCAM. The following artists will perform (some using PD + GEM, including me): AOKI takamasa / Jeremie BERNSTEIN / BLTZR / Guillaume BOUTARD / Sylvain CHAUVEAU / CHDH (Cyrille HENRY + Guest)/ Thierry CODUYS / Eric DAUBRESSE / DISCOM / ENCRE / EZDAC / Yoshihiro HANNO / HYPO / JASCH / JUKO / Romain KRONENBERG / MINIFER / Eric MINKKINEN / Ali MOMENI / MTBF / My Jazzy Child / Kris NAPPE / Gilbert NOUNO / Tujiko NORIKO + Lionel FERNANDEZ/ OLDINE / O. LAMM / Olivier PASQUET / Sébastien ROUX / Francois SARHAN / Kasper TOEPLITZ / Bruce TOVSKY Schedule+other details available at http://resoffnances.ircam.fr mirror at http://resoffnances.free.fr ciao -- Frank Barknecht _ ______footils.org__

21 years, 11 months

[linux-audio-dev] [ANN] LADCCA 0.3.2

by Bob Ham

Hi all, This is not a release of any new code; it's just a trivial compilation fix for the 0.3 tree: * fixed a missing #include http://pkl.net/~node/ladcca.html Bob -- Bob Ham <rah(a)bash.sh> "At some point, keystroke recorders got installed on several machines at Valve. Our speculation is that these were done via a buffer overflow in Outlook's preview pane." -- Gabe Newell on the Half-Life 2 source leak

21 years, 11 months

[linux-audio-dev] [ot] Hmm... seems familiar

by Steve Harris

from Joel on Software http://www.ok-cancel.com/archives/week_2003_10_10.html :) - Steve

21 years, 11 months

Re: [linux-audio-dev] Linux VERSUS OSS ???

by Love Bucket

Paul Davis wrote: > You should not be writing apps with OSS. > If you want portability use PortAudio. LOL! PortAudio uses... OSS! __________________________________ Do you Yahoo!? The New Yahoo! Shopping - with improved product search http://shopping.yahoo.com

21 years, 11 months

[linux-audio-dev] Linux.Conf.Au Audio Mini-Conf

by Conrad Parker

Hi, just a reminder that the Linux Audio mini-conf at Linux.Conf.Au is happening on Monday Jan 12 2004 in beautiful Adelaide, South Australia. Details are at: http://www.metadecks.org/events/lca2004/ if you can be there and would like to do a presentation, please submit an abstract soon, places are filling very fast and we'd like to get the programme sorted out this month :) other than that, it should be a lot of fun, as will the main conference on the following Wed-Sat: http://lca2004.linux.org.au/programme.cgi cheers, Conrad.

21 years, 11 months

Re: [linux-audio-dev] Re: Linux VERSUS OSS ???

by Taybin Rutkin

Defiant until the very end. Almost admirable. http://www.alsa-project.org/alsa-doc/alsa-lib/ Taybin -----Original Message----- From: Love Bucket <riotofjoy(a)yahoo.com> Sent: Oct 14, 2003 11:41 AM To: linux-audio-dev(a)music.columbia.edu Subject: [linux-audio-dev] Re: Linux VERSUS OSS ??? Paul Davis wrote: > OSS is dead. You should not be writing apps with OSS. Well, at least OSS has a programmer's guide (PDF file): http://www.opensound.com/pguide/oss.pdf Where is the equivalent for ALSA? Until it exists, we will continue using OSS! __________________________________ Do you Yahoo!? The New Yahoo! Shopping - with improved product search http://shopping.yahoo.com

21 years, 11 months

Re: [linux-audio-dev] Linux VERSUS OSS ???

by Taybin Rutkin

That's not the point. It's a better way to program audio. And it doesn't only use OSS. http://www.portaudio.com/status.html Taybin -----Original Message----- From: Love Bucket <riotofjoy(a)yahoo.com> Sent: Oct 14, 2003 11:44 AM To: linux-audio-dev(a)music.columbia.edu Subject: Re: [linux-audio-dev] Linux VERSUS OSS ??? Paul Davis wrote: > You should not be writing apps with OSS. > If you want portability use PortAudio. LOL! PortAudio uses... OSS! __________________________________ Do you Yahoo!? The New Yahoo! Shopping - with improved product search http://shopping.yahoo.com

21 years, 11 months

[linux-audio-dev] MIDI part II

by hexe_2003＠directbox.com

Hello again! I though about my MIDI problem again and I concluded that the only mistake can be my alsa version. Nothing else could hang up the system, right ? Well, then I'd like to know howto use MIDI via the OSS-layer, because alsa-0.9.7 ( current version) seems to need some "magic" to get started and I am MUCH impatient right now ;)))) Any tips, links or something interesting where I could start with ? Howto say OSS that there is a MIDI-keyboard ? ANY applications uses MIDI-IN signals via OSS ? greez, Sascha Retzki __________________________________________________ Verpassen Sie keine eBay-Auktion und bieten Sie bequem und schnell über das Telefon mit http://www.telefonbieten.de Ihre eMails auf dem Handy lesen - ohne Zeitverlust - 24h/Tag eMail, FAX, SMS, VoiceMail mit http://www.directbox.com

21 years, 11 months

Re: Re: Re: [linux-audio-dev] Oss & threading -- is it possible

by hexe_2003＠directbox.com

-------- directBOX Reply --------------- From: david(a)olofson.net To : linux-audio-dev(a)music.columbia.edu Date: 10.10.2003 19:17:01 On Friday 10 October 2003 17.41, hexe_2003(a)directbox.com wrote: [...] > But well, If I synthize ( ? spelling) two signals and want to send > them at the same time to the device, my first idea'd be: > 1.) Open /dev/dsp, maybe O_NONBLOCK | O_WRONLY > 2.) thread > 3.) two threads calculate the both signals > 4.) sync them > 5.) two threads write their signals to /dev/dsp > 6.) threads close > > certainly some of this. I mean mp3blaster, for example, have > several pids while playing audio streams, and it is basicly > OSS-programming and not alsa. > Am I so wrong ? ;) Yep! ;-) Synths, trackers, games and other "polyphonic things" at some point mix everything into a single stream that is sent to the audio device. In general, all audio processing is done in a single thread, but in some cases, it can be pretty hard to get the processing deterministic enough that it can run in the audio thread without causing drop-outs. This is especially troublesome if you need low latency, as in games and other interactive applications. This is probably why mp3blaster is using multiple threads; one for each mp3 stream (decoding into raw audio data) and one for mixing and output. There is most probably substantial buffering between the decoding threads and the mixer thread, as this would allow solid playback with less buffering (ie less laggy mixing controls) between the mixer and the audio device. //David Olofson - Programmer, Composer, Open Source Advocate ..- Audiality -----------------------------------------------. | Free/Open Source audio engine for games and multimedia. | | MIDI, modular synthesis, real time effects, scripting,... | `-----------------------------------> http://audiality.org -' --- http://olofson.net --- http://www.reologica.se --- -------------- quiet interesting ;) Could you give me a short idea howto mix two signals/stream/oscilators/whatever ?? If it is not pthread, what is it ? Sascha Retzki __________________________________________________ Verpassen Sie keine eBay-Auktion und bieten Sie bequem und schnell über das Telefon mit http://www.telefonbieten.de Ihre eMails auf dem Handy lesen - ohne Zeitverlust - 24h/Tag eMail, FAX, SMS, VoiceMail mit http://www.directbox.com

21 years, 11 months

Re: Re: [linux-audio-dev] which API for best quality output

by hexe_2003＠directbox.com

-------- directBOX Reply --------------- From: S.W.Harris(a)ecs.soton.ac.uk To : linux-audio-dev(a)music.columbia.edu Date: 13.10.2003 09:28:51 On Sun, Oct 12, 2003 at 01:30:52 +0200, hexe_2003(a)directbox.com wrote: > But this wasn't your question ;) . > jack does NOTHING with quality itsself, because jack is a user-space daemon other > apps connect to and send data to, which is then outputted via the currently used audio-driver. > And this is alsa ;) Thats not /quite/ true, JACK will dither the output (if asked to) which will improve the audio quality, and if the output of your program is going to be used by another then JACKs float data will help. Essentially though, it makes little difference. - Steve ----------- Woow, thats interesting! Well, then jack might be the best way to code your OGG-player ;) Sascha Retzki __________________________________________________ Verpassen Sie keine eBay-Auktion und bieten Sie bequem und schnell über das Telefon mit http://www.telefonbieten.de Ihre eMails auf dem Handy lesen - ohne Zeitverlust - 24h/Tag eMail, FAX, SMS, VoiceMail mit http://www.directbox.com

21 years, 11 months

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Linux-audio-dev