Linux-audio-dev

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7440 discussions

[linux-audio-dev] Perl / Audio::LADSPA lib

by Joost Diepenmaat

Hello everybody, At http://hortus-mechanicus.net/perl/audio-ladspa/ you can find my attempts at making a LADSPA interface for Perl. The LADSPA API should be completely supported, but at the moment the system only supports mono audio out (via Audio::Play) and no way of reading/writing audio files. There is also a crude GUI at: http://hortus-mechanicus.net/perl/audio-ladspa/rack.perl.txt To use the GUI you need to have perl-tk installed. Bugreports / missing features welcome. Joost Diepenmaat. --- README follows --- Audio::LADSPA ============== This is a set of extensions to host LADSPA plugins, you can query them, or apply them to audio data. INSTALLATION To install this module type the following: perl Makefile.PL make make test make install Or, if you prefer the CPAN installer, type: perl -MCPAN -e'install Audio::LADSPA' Which will fetch, make and install the module for you. DEPENDENCIES LADSPA dependencies: The tests specifically need the demo plugins from the ladspa_sdk package, with LADSPA_PATH pointing to the directory where they are installed. You do not have to set the LADSPA_PATH environment variable if your LADSPA plugins are located in either /usr/lib/ladspa or /usr/local/lib/ladspa, but you will be warned when the modules are loaded. You'll probably want to set it anyway, because most other LADSPA hosts need it. You can download the sdk from from http://www.ladspa.org/ Debian users can use "apt-get install ladspa-sdk" Alternatively, you can skip the tests, but these modules are of no use without at least SOME plugins installed. CPAN dependencies: Also, this extension requires the following Perl modules; Test::More, Audio::Play, Scalar::Util, Data::Uniqid and Graph::Directed Install them first from CPAN. Alternatively, if you're installing using the CPAN or CPANPLUS shell, this can be taken care of automatically. COPYRIGHT AND LICENCE Copyright (C) 2003 - 2004 Joost Diepenmaat This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. See the COPYING file for more information

20 years, 1 month

[linux-audio-dev] LADSPA "Unique" IDs

by Dave Robillard

I vaguely remember a discussion here about LADSPA ID's (unsigned long UniqueID) not actually being globally unique to a plugin like the header implies, but I can't find it in the archives. So.. unique or not? Basically I need to know what the "proper" information is to send a synth in order to load a plugin. At the moment I'm sending filename and index, which I don't think is ideal. (The synth could be running on a completely seperate machine, so the sender and receiver might not have the same LADSPA plugins around...) Thanks, -DR-

20 years, 1 month

[linux-audio-dev] noiseweapon 1.0

by Dave Griffiths

Hi all, Thought I'd better get round to releasing this at last: The noiseweapon is a multitimbral, polyphonic synth that I use for live performance: http://www.pawfal.org/Software/noiseweapon/ have fun, dave

20 years, 1 month

[linux-audio-dev] errors building midishare

by Ciccolella Lazzaro Nicolò

hi, for being able to try the linux port of mythical ircams "open music" I trying to compile from source (CVS) the grams "midishare" unfortunately, with some build errors. My box: slackware 9.1/current, kernel 2.6.6, gcc 3.3.3 every aid is a lot appreciated Lazzaro Follow the errors: make[1]: Entering directory `/opt/sources/midi/midishare/linux-dev/midishare-linux/linux/kernel' gcc -O6 -Wall -D_LOOSE_KERNEL_NAMES -DMODVERSIONS -D__Pentium__ -DCONFIG_KERNELD -DMODULE -D__KERNEL__ -DLINUX -I/lib/mod ules/`uname -r`/build/include/ -I../../common/Headers -c -o msLoader.o msLoader.c In file included from /lib/modules/2.6.6/build/include/asm/processor.h:18, from /lib/modules/2.6.6/build/include/asm/thread_info.h:16, from /lib/modules/2.6.6/build/include/linux/thread_info.h:21, from /lib/modules/2.6.6/build/include/linux/spinlock.h:12, from /lib/modules/2.6.6/build/include/linux/capability.h:45, from /lib/modules/2.6.6/build/include/linux/sched.h:7, from /lib/modules/2.6.6/build/include/linux/module.h:10, from msLoader.c:41: /lib/modules/2.6.6/build/include/asm/system.h: In function `__set_64bit_var': /lib/modules/2.6.6/build/include/asm/system.h:193: warning: dereferencing type-punned pointer will break strict-aliasing r ules /lib/modules/2.6.6/build/include/asm/system.h:193: warning: dereferencing type-punned pointer will break strict-aliasing r ules msLoader.c: In function `prnt': msLoader.c:79: error: structure has no member named `tty' msLoader.c:84: error: request for member `write' in something not a structure or union msLoader.c:85: error: request for member `write' in something not a structure or union msLoader.c: In function `MidiReset': msLoader.c:130: warning: `MOD_DEC_USE_COUNT' is deprecated (declared at /lib/modules/2.6.6/build/include/linux/module.h:51 3) msLoader.c: In function `myopen': msLoader.c:141: warning: `MOD_INC_USE_COUNT' is deprecated (declared at /lib/modules/2.6.6/build/include/linux/module.h:50 1) msLoader.c: In function `myclose': msLoader.c:150: warning: `MOD_DEC_USE_COUNT' is deprecated (declared at /lib/modules/2.6.6/build/include/linux/module.h:51 3) make[1]: *** [msLoader.o] Error 1 make[1]: Leaving directory `/opt/sources/midi/midishare/linux-dev/midishare-linux/linux/kernel' make: *** [kernel] Error 2

20 years, 1 month

[linux-audio-dev] ladspar

by Hans Fugal

I've been putting together a library for using LADSPA plugins in Ruby. I think it's code-complete, and could use some early beta testers while I finish packaging it up. If you know ruby and LADSPA and would like to look at it send me an email off-list and I'll send you a tarball. I anticipate a first release later this week. -- .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, 1 month

[linux-audio-dev] Re: wavelet sampling

by Juhana Sadeharju

>From: "Susan R. Cragin" <susancragin(a)earthlink.net> > >Can anyone send me to a web site describing wavelet sampling as it >applies to speech recognition? Probably best would be to search at ACM and IEEE digital libraries. But google can bring up good papers too. http://www.wavelet.org should be worth of looking at. They publish a digest having research notifications. Juhana

20 years, 2 months

[linux-audio-dev] FSMSI 2004 Proceedings (slides and audio recordings) available

by Media Innovation Unit - Firenze Tecnologia

====================================================================== FSMSI 2004 European seminar on "Free Software for Multimedia Streaming over the Internet" June 23/24, 2004 IRCAM, Paris, France http://freesoftware.ircam.fr/fsmsi2004 FSMSI 2004 PROCEEDINGS (SLIDES AND AUDIO RECORDINGS) AVAILABLE ====================================================================== SCOPE OF THE SEMINAR The exponential growth of network speed makes it possible to exchange high quality audio and video contents over the Internet, often with real time capabilities. However, multimedia streaming still presents several issues with regards to Free Software and open standards: patents on software and data formats, free codecs availability, standards definitions, etc, etc. The goal of this seminar is to provide an overview of existing Free Software for multimedia streaming over Internet, to envisage future developments and collaborations in this area and to examine the possible ways to fund these developments. PROCEEDINGS AVAILABLE All the proceeding for the first edition of FSMSI, which took place at IRCAM (Paris), with the participation of Carlo Calabrò (Videolan), François Déchelle (Ircam), Dominique Fober (Grame), Andrea Glorioso (MIU-FT), Eric Gressier (Cnam), Olivier Lescurieux (Ircam), Hans-Nikolas Locher (Cnam), Juan Carlos De Martin (IEIIT-CNR/Politecnico di Torino), Yann Orlarey (Grame), Stuart Cunningham (BBC R&D) and Anuradha Suraparaju (BBC R&D) as speakers, are now available online at: http://freesoftware.ircam.fr/rubrique.php3?id_rubrique=83 You will find both the presentations' slides [S] and (most of) the audio recordings [A] here: - Francois Dechelle: Introduction [S] http://freesoftware.ircam.fr/misc/fsmsi2004/slides/francois.dechelle.pdf - Andrea Glorioso: "Innovating the Media: why Streaming is important for Free Software (and viceversa)" [S] http://freesoftware.ircam.fr/misc/fsmsi2004/slides/andrea.glorioso.pdf - Carlo Calabro`, Simon Latapie: "The VideoLAN project" [S] http://freesoftware.ircam.fr/misc/fsmsi2004/slides/carlo.calabro.simon.lata… [A] http://freesoftware.ircam.fr/misc/fsmsi2004/recordings/carlocalabro-videola… - Eric Gressier: "The distributed concert" [S] http://freesoftware.ircam.fr/misc/fsmsi2004/slides/eric.gressier.pdf [A] http://freesoftware.ircam.fr/misc/fsmsi2004/recordings/ericgressier-thedist… - Dominique Fober: "Clock skew in real-time networking" [S] http://freesoftware.ircam.fr/misc/fsmsi2004/slides/dominique.fober.clock-sk… [A] http://freesoftware.ircam.fr/misc/fsmsi2004/recordings/dominiquefober-wirel… - Dominique Fober: "Wireless performance in regard of music applications" [S] http://freesoftware.ircam.fr/misc/fsmsi2004/slides/dominique.fober.wireless… [A] http://freesoftware.ircam.fr/misc/fsmsi2004/recordings/dominiquefober-wirel… - Yann Orlarey: "Distant Music Rehearsal" [S] http://freesoftware.ircam.fr/misc/fsmsi2004/slides/dominique.fober.wireless… [A] http://freesoftware.ircam.fr/misc/fsmsi2004/recordings/Distant_Music_Rehear… - Juan Carlos de Martin: "The Open Media Streaming project" [S] http://freesoftware.ircam.fr/misc/fsmsi2004/slides/dominique.fober.wireless… [A] http://freesoftware.ircam.fr/misc/fsmsi2004/recordings/THe_Open_Media_Strea… - Stuart Cunningham, Anuradha Suraparaju: "BBC Research and Development multimedia projects" [S] http://freesoftware.ircam.fr/misc/fsmsi2004/slides/stuart.cunningham.anurad… [A] http://freesoftware.ircam.fr/misc/fsmsi2004/recordings/BBC_Research_And_Dev… The organization committee of FSMSI 2004, namely Andrea Glorioso (MIU-FT) and Francois Déchelle (IRCAM) would like to thank all the speakers and the participants to the conference, for making it such a useful and nice experience; to Patrice Tisserand and Simon Schampijer (IRCAM) for their valuable help; to Nicola Giosmin and Linda Salvadori (MIU-FT) for their organizational support from Italy. CONTACTS Web site: http://freesoftware.ircam.fr/fsmsi2004/ Mailing list: freestreaming-paris2004(a)lists.miu-ft.org http://lists.miu-ft.org/mailman/listinfo/freestreaming-paris2004 Organizational Committe: Andrea Glorioso <a.glorioso(a)miu.firenzetecnologia.it> Francois Déchelle <Francois.Dechelle(a)ircam.fr>

20 years, 2 months

[linux-audio-dev] Project advice

by Steve Harris

Hi all, Due to some family problems and lot of pressure at work I have not been able to spend as much time as needed on my audio projects in the last few months. This means that many of them have patch backlogs and TODOs with 6 month old jobs on then and I'm starting to loose track of things. The situation will probably get worse in the next few months. Because of this I'm going to try to move as many projects as reasonable onto sourforge (or similar), so that there is a maling list and bug reporting system where the outstandiing problems can be publicy seen, and that will hopefully be more reliable than my inbox and memory :) Also for the posibility of coding and administration assistance. There are a few questions I have for the community though, so feedback would be helpful: Timemachine - the code is pretty simple, but it needs a couple of fixes - theres a race condition that a friend has agreed to fix, and it needs some way of switching between WAV and W64 files as needed. Its unlikly to grow much bigger though, so I'm not sure it relly needs a proper project. SWH-plugins - this is a biggie. Its a bit of a maintainance nightmare so it should be somewhere other people can get at it, but I'm very tempted to change the name, as it's a bit self publicising - a lot of the effort was contributed by other people, and I dont want to seem like I'm claiming their effort. OTOH, it has quite a lot of "brand recognition" (or whatever the free software equivalent is). Meterbridge - the code is in a state of flux, in the CVS tree I'm halfway though a parallel graphics backed for OpenGL - it decreases the CPU load immensly, and lets you scale meters live, which is very handy, but its a fairly big job, and I dont know OpenGL that well. The question is wether I should wait for the OGL port to be finished before I inflict the code on the world. Liblo - the most common bug report I get is that the name is too short - so maybe that should change :) suggestions welcome, libliteosc seems obvious, but may be not true in the future. Other than that its a good candidate for being inflicted on the world - its actually pretty well documented! I'm most of the way though refactoring the network code to make it less UDP specific, and adding UNIX domain socket support. The libtool stuff is b0rked. I think OSC is important to the future of linux audio, so I always intended to make this a colaborative project once it had enough momentum. Cheers, Steve

20 years, 2 months

[linux-audio-dev] DSSI and GUI

by Joost Yervante Damad

Hi, I'm trying to get DSSI to work for me. I tried with Xsynth and the less trivial example from the DSSI source. As host I tried rosegarden and the example host from DSSI. The plugins load fine, from within rosegarden I can also use them and control/use them to make nice noises, yet the plugin own gui doesn't show in both hosts. Anyone experienced something simular? Greetings, Joost Damad

20 years, 2 months

[linux-audio-dev] How to run 4 instances of music player (Alsaplayer) smoothly ?

by Robert Rozman

Hi, I'd like to include music players in my home automation system. I'd like to run 4 instances of music player - but I want them all to run with sufficient resources - not to do hickups when there is something else on server.... Any advice, help ? Regards, Robert.

20 years, 2 months

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Linux-audio-dev