Linux-audio-dev February 2005

linux-audio-dev@lists.linuxaudio.org

78 participants
65 discussions

by Steve Harris

Liblo, the Lite OSC library, is an implementation of the Open Sound Control [1] protocol for POSIX systems. It is written in ANSI C99 and released under the GNU General Public Licence. It is designed to make developing OSC applictions as easy as possible. http://plugin.org.uk/liblo/ Changes: Patch from Jesse Chappell to fix memory leak Ability to directly reply to the sender of a UDP message Preliminary support for the OSC method enumeration scheme - Steve [1] http://www.cnmat.berkeley.edu/OpenSoundControl/

20 years, 1 month

[linux-audio-dev] Re: [linux-audio-user] [music] some tracks i did the over the last months....

by Dave Robillard

On Mon, 2005-21-02 at 09:15 +0000, Steve Harris wrote: > On Sun, Feb 20, 2005 at 10:10:43 +0100, torbenh(a)gmx.de wrote: > > > > hi... > > > > work and fst continued, and i was able to test some vsti synth. > > i am totally flashed by arpegiators and i ask myself if we have one for > > linux ? > > > > does dssi provide for tempo sync stuff as required be arpegs and > > adjusted delays ? > > Other than the stuff you get from MIDI, no. > > It would be a candidate for well-known ports in LADSPA I guess, tempo and > sync ports. There aren;t many tempo based effects in LADSPA or DSSI > though. (Brought over from LAU) I've been wondering about this (Om will have a [jack] transport module) - what would the ideal ports would be.. BPM? ms/quarter note? bar length (in what unit?)? Personally I use more low level things and use math plugins (to set, say, delay time in ms) so it doesn't matter to me much, but what would be most useful for higher level DSSI plugins that do automatic "tempo sync" ala what some vsts seem to do? I was thinking "ms/note" (leaving "note" up to interpretation) and "notes/bar" perhaps? It would be nice to come to an agreement to avoid another V/Oct vs Hz nuisance. -DR-

20 years, 1 month

[linux-audio-dev] [ANN] New Mailing List, Nueva lista!!

by Leandro Monk

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Friends: Has been created LAU-es, Linux Audio Users spanish. Our propose is to create a comunity of amateurs and audio profesionals and let every knwon about all goods things (and give a hand to solved some bad things ;) )of our loved SO in audio aplicattions To suscribe, go to: https://listas.linux.org.ar/cgi-bin/mailman/listinfo/lau-es Please spread it!! Amigos: se acaba de crear la lista LAU-es, Linux Audio Users en español. La idea es crear una comunidad de usuarios de audio en Linux (tanto amateurs como audio profesional), y difundir las bondades (y dar una mano para resolver las no tan bondades) de nuestro querido SO en el audio profesional. Para suscribirse, hay que ir a: https://listas.linux.org.ar/cgi-bin/mailman/listinfo/lau-es Por favor, el que pueda, que haga difusión de la misma. - -- Leandro Monk Miembro del CaFeLUG www.cafelug.org.ar -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFCGLfHpYloOBnHLswRArwgAJ9bvLU3E0A/BL+4AIWbirq9BlCzAQCguZvL zA6CmqZUy5X6cIFesqtZG8A= =zY8I -----END PGP SIGNATURE-----

20 years, 2 months

[linux-audio-dev] osc.el

by Mario Lang

Hi. In case anyone ever wanted to send OSC messages directly from within Emacs, you might want to take a look at this: http://delysid.org/emacs/osc.html Its rather rough right now, but it definitely works and delivers float, int and string arguments correctly. Watch the page for updates. -- CYa, Mario

20 years, 2 months

[linux-audio-dev] mux concept paper

by mimo

I have put online the beginngs of a concept paper for an audio program I have been wanting to write for quite a while now. I wondered whether you could give me some feedback on it and share some of your experiences with me. A while ago I decided to call this *mux* where the name stands for nothing in particular. I have tested a couple of similiar audio apps for linux recently, and then toyed around with libraries I found on the net. I might be reinventing the wheel once more, but that's up for discussion.. The paper is work in progress, I'm hoping to add to it tomorrow night. Looking forward to hear back from you and thanks for any input.. mimo PS.: the paper is here http://mimo.gn.apc.org/mux/

20 years, 2 months

[linux-audio-dev] linux.conf.au Audio Miniconf

by Conrad Parker

This is a reminder, as the closing date for submissions is soon. Please do not confuse this event with the Linux Audio Conference (LAC) in Karlsruhe, Germany, which is on during the same week. There may or may not be video streaming or teleportation between the two. There are kangaroos in Australia. ------------------------------------------------------------ CALL FOR PARTICIPATION Linux Audio Miniconf at linux.conf.au (LCA2005) April 2005, Canberra, Australia http://www.metadecks.org/events/lca2005/ This mini-conference is part of linux.conf.au (LCA2005), Australia's national Linux conference. Participants of this mini-conference must register for LCA2005; the conference web site is http://linux.conf.au/ The Audio Miniconf comprises technical sessions during the day, and an opportunity for jamming and musical demonstrations in the evening at a local pub. This call for participation is for the technical sessions. Suggested topic areas include: * Linux for Digital Audio Workstations and musical instruments * low latency and reliable audio in the Linux kernel and userspace * systems for connecting music, processing and control hardware * core Linux audio subsystems: Jack, ALSA, LADSPA, etc. * software synthesis and sequencing applications * recording, editing and mastering applications * audio file formats and codecs * streaming and network services for audio * telephony and speech technologies * usability of music and audio applications Presentations must relate to Free and Open Source software and/or open standards. The suggested duration of sessions is 60 minutes; this may be varied according to the needs of each topic. If you would like to present a technical session, please mail a brief abstract (100-300 words) to audioconf-cfp(a)metadecks.org by February 20 2005. This mini-conference is being arranged by Conrad Parker (Sweep project) and Erik de Castro Lopo (libsndfile, Secret Rabbit Code), with venue and other logistics provided by the organisers of LCA2005. Conrad.

20 years, 2 months

[linux-audio-dev] Job Opening

by Andreas Roedl

Hello! Yes, the following job has something to do with Linux and audio. Linux System Administrator in an audio company. :-) SYSTEM ADMINISTRATOR NATIVE INSTRUMENTS is the world's leading manufacturer of software synthesizers and samplers for standard processors and an established brand for music- and audio software. Founded 1996 in Berlin, Native Instruments was one of the first companies to use the possibilities for real-time sound synthesis on the Windows and Macintosh operating systems. On account of this early market presence and technological head start, NATIVE INSTRUMENTS plays a key role in the booming market for audio software. The products, designed for both professionals and hobbyists alike, have won practically every relevant award in the field. Native Instruments is looking for a versatile IT professional to support its IT Department located in Berlin. Responsibilities: - Administrating a complex Linux based server network. - Working with and developing LAN network monitoring tools. - Participate in rotating "on call" schedule with other members of the team. - Design and maintain Firewall, VPN and IDS infrastructure. - Assist with corporate windows/mac desktop support. Requirements: - Must have good LAN troubleshooting skills (net. device and system level). Thorough understanding of network security aspects, common problems and solutions (ACL, firewall filtering, and VPN). - Knowledge of network related protocols (e.g., TCP/IP, IPSEC, routing protocols, 802.1x, OSC). - Solid background in Unix Systems Administration topics (e.g. LDAP, Webservers, MTAs, DNS, virtual servers, cluster management, VoIP). - Familiarity with Unix system programming (C/C++) a plus. - Strong scripting skills (e.g., PERL, shell scripting, Python). - Experience in a high-volume or critical production service environment. - Proven technical troubleshooting experience. - Senior level Unix systems or database administration experience. - Experience with network change management control tools and policies. - Experience with several Network Monitoring and other network administration tools. - Excellent written and verbal communication skills. - Experience and flexibility regarding on-call responsibilities. - Ability to work independently. For immediate consideration, please send a text (ASCII) of your resume to andreas.roedl(a)native-instruments.com. Andi -- -> Andreas Roedl -> Senior IT Manager / Head of IT Dept. -> NATIVE INSTRUMENTS GmbH -> andreas.roedl(a)native-instruments.de -> Schlesische Strasse 28 -> http://www.native-instruments.de/ -> D-10997 Berlin -> Tel. +49-30-61 10 35-1711 -> Germany -> Fax +49-30-61 10 35-2711

20 years, 2 months

[linux-audio-dev] strange jack ringbuffer problem

by Hans Fugal

I've been banging my head against this one all evening. Now I'm going to go to sleep on it, but I throw it out for the wiser and more experienced to see if you can see my error. The code is at http://fugal.net/~fugalh/src/alex which you are welcome to refer to and critique. It segfaults on line 171 of jack.cc, but not if I comment out line 158 (or use 0 for the second argument). It seems to segfault once input_rb is nearly or completely to the end (not full, since it is being drained by the other thread; it's just as it would wrap around). The autopsy shows that it is segfaulting because output_rb and consequentially vec is completely hosed. What I don't understand is how jack_ringbuffer_write_advance(input_rb, something_plenty_small) could possibly hose output_rb. something_plenty_small is usually on the order of 160 bytes. I'm running jackd with a 512 byte buffer at 48000Hz. (gdb) bt #0 0xb7f91253 in src_short_to_float_array () from /usr/lib/libsamplerate.so.0 #1 0x0804a01c in Jack::jack_process (this=0xbffff300, nframes=512, arg=0xbffff300) at jack.cc:171 #2 0x08049d87 in Jack::jack_process_wrapper (nframes=512, arg=0xbffff300) at jack.cc:114 #3 0xb7fb255d in jack_stop_freewheel () from /usr/lib/libjack-0.80.0.so.0 #4 0xb7d639b4 in start_thread () from /lib/tls/libpthread.so.0 #5 0x00000000 in ?? () (gdb) up #1 0x0804a01c in Jack::jack_process (this=0xbffff300, nframes=512, arg=0xbffff300) at jack.cc:171 171 src_short_to_float_array((short*)vec[i].buf, buf, vframes); (gdb) p *output_rb $1 = {buf = 0xd0b0c860 <Address 0xd0b0c860 out of bounds>, write_ptr = 92858992, read_ptr = 88669736, size = 4291362712, size_mask = 13171512, mlocked = 3735008} (gdb) p vec $2 = {{buf = 0xd5f9c688 <Address 0xd5f9c688 out of bounds>, len = 4189256}, { buf = 0x804d028 "��", len = 0}} (gdb) p *input_rb $3 = {buf = 0x804d028 "��", write_ptr = 16266, read_ptr = 16266, size = 16384, size_mask = 16383, mlocked = 0} I hope someone can see what I'm doing wrong. Consider the code under the GPL. -- .O. Hans Fugal | De gustibus non disputandum est. ..O http://hans.fugal.net | Debian, vim, mutt, ruby, text, gpg OOO | WindowMaker, gaim, UTF-8, RISC, JS Bach --------------------------------------------------------------------- GnuPG Fingerprint: 6940 87C5 6610 567F 1E95 CB5E FC98 E8CD E0AA D460

20 years, 2 months

[linux-audio-dev] Native Buzz was: mux concept paper

by Jan Weil

There is an attempt to create a native and free replacement of Buzz at <http://www.buzztard.org>. The Status page suggests they could do with some help... -- Jan Weil http://linuxaudioblog.jawebada.de

20 years, 2 months

Re: [linux-audio-dev] Linux DSP Hardware?

by Peter Zubaj

Hi, >what if we want to experiment with h/w dsp? (e.g. the 1820m from creative professional aka emu) AFAIK emu1820 uses Audigy DSP - hw DSP effect are available only for 48 kHz. Correct me if I am wrong. Peter Zubaj ____________________________________ Vsetko o SuperStar http://superstar.atlas.sk

20 years, 2 months

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Linux-audio-dev February 2005