Linux-audio-dev

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7448 discussions

by Kjetil Matheussen

Radium is a music editor with a new and better interface. It's inspired by trackers, but has fewer limitations and uses graphics to show musical data. Screenshot: =========== http://users.notam02.no/~kjetism/radium/pictures/radium-1-9-14.png Source code: ============ http://archive.notam02.no/arkiv/src/?C=M;O=D Homepage: ========= http://users.notam02.no/~kjetism/radium/ Source code repository: ======================= https://github.com/kmatheussen/radium Most important changes 1.9.6 -> 1.9.14: ======================================= * Waveform data is shown in the editor for the sampler instrument. * Colored areas replaced breakpoint curves for velocity representation. (looks much less confusing) * Only show gfx nodes for the track the mouse is currently placed over. * Various other graphical improvements * Fixed denormals on 32 bit Linux. (-mpmath=sse) * Fix various horrible bugs for those with non-C locale settings Thanks to "DoosC" for helping to debug. * Switch shift and right-alt keybindings for left/right arrow. Now: * Right Shift + left/right moves cursor to previous / next track * Right Alt + left/right changes velocity for note playing under cursor. * Need to press altgr or right shift less than 0.25 seconds to play. * Radium doesn't freeze when trying to play after it has been running for a few hours. * Dont create block undo too often. (Most notable when changing velocity using keyboard) * Don't reset temponode track size when zooming. * Fix pesky memory bug, sometimes causing the program to quit because it ran out of memory. Graphics should also be snappier in some situations after this fix. It was caused by the gfx queue growing and growing when QWidget::paintEvent wasnt called directly after drawing something. * Dont crash when pasting block in certain situations. * Remove reading of uninitialized memory in slider painter. * TAB switches between common window configs * Show message box if parsing soundfont file fails * Add -Wall option to RELEASE build * Make track headers of current instrument more distinct * Larger window during startup * Fix missing sound on AMD phenom processor. Thanks to DoosC for helping to debug. * Disable text border by default (except for line numbers), and ignore saved text border setting * Ignore minnodesize and use font height*2 instead. * Implement reset font size for qt * Demo song audio adjustments * Set default colors/fonts menu options * Qt: set DontUseNativeMenuBar on all systems, not just osx. Menues requires mono font to look right (fix for unity) * Dont stop playing when changeing patch for a track * Various graphical improvements * Use "---" instead of STP. * "make install" should work without first running the program. * Shift+left/right to change note volume works even if cursor is not placed on the same line as the note name. * Fixed zooming-in-a-lot bug. * Pan-per-note for the sampler instrument. Means that the track panner works for that track only. * Fixed samplefile font in sample file selector. * Different panning algorithm. (Dont just lower volume in one channel on stereo files) (Warning: may change sound of existing songs) * Remove -mtune=native for linux builds. * Linux: Use standard paths for lrdf files * Instructions on how to compile from git

11 years, 10 months

Call for Papers - DAFx13, Maynooth, Ireland Sept. 2013

by Victor Lazzarini

Apologies for cross-posting. DAFX 13 ======================= CALL FOR PAPERS We are pleased to announce that the 16th International Conference on Digital Audio Effects will take place at the National University of Ireland, Maynooth, Ireland, between 2nd and 6th September, 2013. This annual conference is a coming together of those working across the globe in research relating to digital audio processing for music, sound art, acoustics and related applications. The program for this conference will include, in addition to presentations of papers reporting scientific and practical discoveries, concerts and a full social program. The conference presentations will comprise key-note addresses, oral and poster presentations of submitted papers and tutorials/demonstrations. We would like to invite submissions of papers for presentation at DAFx-13 within the following general areas relevant to audio signal processing for music, sound art, acoustics and related applications: - Capture and analysis - Representation, transformation and modelling - Transmission and resynthesis - Effects and manipulation - Perception and evaluation - Physical modelling, virtual acoustic and analogue models - Sound design and composition - Hardware and software design - Spatial Audio - Digital Audio in Mobile Platforms At DAFx-13 we especially encourage submissions relating to: Sound synthesis Computer music and languages for music signal processing Spectral signal processing Acceptance to the conference for all submissions is subject to peer-review. Acceptance may be conditional upon changes being made to the paper as directed by reviewers. Accepted contributions will be published in the Conference Proceedings, which will be made freely accessible via the conference website. Prospective authors should prepare and submit a full-length paper, including all figures and references, according to one of the following two formats: Oral presentations: 6 pages maximum, 20 minutes for presentation (15 minutes talk followed by 5 minutes Q&A) Poster presentations: 4 pages maximum Important dates: Submission deadline: Friday 29/03/2013 Acceptance notification to authors: Monday 06/05/2013 Camera-ready papers due: Monday 10/06/2013 Paper templates and links to the submission pages can be found in the Conference website: http://dafx13.nuim.ie ============================ Dr Victor Lazzarini Senior Lecturer Dept. of Music NUI Maynooth Ireland tel.: +353 1 708 3545 Victor dot Lazzarini AT nuim dot ie

11 years, 10 months

Introducing Qmingus

by mutil

Qmingus is a software tool for music learning, training and improvisation. You can compose and play scales & chords at varying BPM and generate the notation. Qmingus is a front-end for the mingus <https://code.google.com/p/mingus/> music package, written in python and using the Qt framework. It is free software, released under the terms of the GPL. Here is a minimal website: http://pullbit.gr/projects/qmingus/ and development tracking will be here: https://launchpad.net/qmingus. Notes: * It contains several bugs, some of them in the mingus package itself, and I am not so sure about the correctness of some musical terms, either. Therefore, any suggestions, ideas, comments, and of course contributions, will be greatly appreciated. * There is no documentation yet about installation, compiling etc, Qmingus wiki <http://pullbit.gr/projects/qmingus/wiki/> will be the place for additional information in the future.

11 years, 10 months

jack2 build fails with --profile

by Bruno Gola

hi, i'm trying without success to compile jack2 (version 1.9.8 downloaded from jackaudio.org) using the --profile configure flag. $ python2 waf configure --profile --alsa ... $ python2 waf build ... [158/236] cxx: common/JackLibSampleRateResampler.cpp -> build/default/common/JackLibSampleRateResampler_6.o [159/236] cxx: common/JackAudioAdapter.cpp -> build/default/common/JackAudioAdapter_6.o [160/236] cxx: common/JackAudioAdapterInterface.cpp -> build/default/common/JackAudioAdapterInterface_6.o In file included from ../common/JackNetTool.h:21:0, from ../common/JackNetInterface.h:23, from ../common/JackNetManager.h:23, from ../common/JackNetManager.cpp:19: ../common/JackTools.h: In instantiation of ‘Jack::JackGnuPlotMonitor<T>::JackGnuPlotMonitor(uint32_t, uint32_t, std::string) [with T = float; uint32_t = unsigned int; std::string = std::basic_string<char>]’: ../common/JackNetManager.cpp:73:70: required from here ../common/JackTools.h:128:21: error: ‘fill_n’ was not declared in this scope, and no declarations were found by argument-dependent lookup at the point of instantiation [-fpermissive] In file included from /usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.2/../../../../include/c++/4.7.2/bits/char_traits.h:41:0, from /usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.2/../../../../include/c++/4.7.2/string:42, from /usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.2/../../../../include/c++/4.7.2/stdexcept:40, from ../common/JackException.h:23, from ../posix/JackPosixMutex.h:26, from ../linux/JackPlatformPlug_os.h:44, from ../common/JackPlatformPlug.h:23, from ../common/JackMidiPort.h:26, from ../common/JackNetTool.h:20, from ../common/JackNetInterface.h:23, from ../common/JackNetManager.h:23, from ../common/JackNetManager.cpp:19: /usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.2/../../../../include/c++/4.7.2/bits/stl_algobase.h:775:5: note: ‘template<class _OI, class _Size, class _Tp> _OI std::fill_n(_OI, _Size, const _Tp&)’ declared here, later in the translation unit [161/236] cxx: common/JackNetAdapter.cpp -> build/default/common/JackNetAdapter_6.o Build failed -> task failed (err #1): {task: cxx JackNetManager.cpp -> JackNetManager_4.o} without the --profile flag it works ok. i tried with other version (probably from git, i'm not sure) and it works.. any ideas? thanks, -- Bruno Gola <brunogola(a)gmail.com> http://bgo.la/ | +55 11 9-5552-3599

11 years, 10 months

Re: [LAD] avw.lv2: lvtk and time

by Michael Fisher

Hi again, The ingen crash you were experiencing is resolved (i think). The problem seemed to be that lvtk::GtkUI was double deleting its internal VBox. Which is now being created with Gtk::manage so Gtk can handle its disposal. I tested against drobilla's current svn (the entire stack), lv2-1.2.0, avw's current svn, and the just now updated lvtk origin/release-1.0.3 remote branch. On Sun, 2012-12-02 at 13:32 +0000, Aurélien Leblond wrote: > > Ahh yes, changes aren't in master quite yet. Try git fetching > again and > then checking out the release-1.0.3 branch > > $ git fetch origin > $ git checkout release-1.0.3 > > should do the trick. > > > > Ok, got it. > > > In the meantime, I opened another ticket about Ingen crashing if I > remove a plugin using lvtk while its UI is open. > > > It doesn't happen with plugins not using lvtk, and I think the issue > is inherited from lv2-c++-tools as I used to have the same problem... > > > If you need more info, let me know. > > > Regards, > Aurélien

11 years, 10 months

jack promiscuous mode

by Fons Adriaensen

(to the Jack devs) Any chance of JACK_PROMISCUOUS_SERVER being returned to working order ? Ciao, -- FA A world of exhaustive, reliable metadata would be an utopia. It's also a pipe-dream, founded on self-delusion, nerd hubris and hysterically inflated market opportunities. (Cory Doctorow)

11 years, 10 months

avw.lv2: lvtk and time

by Aurélien Leblond

Hi all, I'm currently modifying the avw.lv2 plugins to use the new extension from lv2: time. To do so, I'm switching from the old lv2-c++-tools to the new lvtk http://lvtoolkit.org. I haven't started to use the new extension just yet, I'm simply migrating my code to this new toolkit. Most of the code compile well, except the UI classes. I'm getting this type of error: [117/134] cxx: src/vco2_gui.cpp -> build/src/vco2_gui.cpp.63.o [118/134] cxxshlib: build/src/vco2_gui.cpp.63.o -> build/avw.lv2/vco2_gui.so /usr/bin/ld: cannot find nodelete: No such file or directory collect2: error: ld returned 1 exit status Waf: Leaving directory `/home/blablack/src/avw.lv2/build' Build failed -> task in 'vco2_gui' failed (exit status 1): {task 13619920: cxxshlib vco2_gui.cpp.63.o -> vco2_gui.so} ['/usr/bin/g++', '-shared', '-pthread', '-Wl,nodelete', 'src/vco2_gui.cpp.63.o', '-o', '/home/blablack/src/avw.lv2/build/avw.lv2/vco2_gui.so', '-Wl,-Bstatic', '-Wl,-Bdynamic', '-llvtk_plugin1', '-llvtk_ui1', '-lgtkmm-2.4', '-latkmm-1.6', '-lgdkmm-2.4', '-lgiomm-2.4', '-lpangomm-1.4', '-lgtk-x11-2.0', '-lglibmm-2.4', '-lcairomm-1.0', '-lsigc-2.0', '-lgdk-x11-2.0', '-latk-1.0', '-lgio-2.0', '-lpangoft2-1.0', '-lpangocairo-1.0', '-lgdk_pixbuf-2.0', '-lcairo', '-lpango-1.0', '-lfreetype', '-lfontconfig', '-lgobject-2.0', '-lglib-2.0'] I simply don't understand the error, it looks like ld is using nodelete as a filename instead of an argument. The build system I'm using is waf, and I modified the wscript to use c++11 (which seems to be required by lvtk, and I have no idea if this is related or not). I admit that I'm completely out of my depth here, so I commited the code onto my svn: svn checkout svn://svn.code.sf.net/p/avwlv2/code/trunk avwlv2-code Thanks in advance for any help! Aurélien

11 years, 10 months

Re: [LAD] CAPS* as LV2

by Aurélien Leblond

> I don't know about the caps plugins, however, i had a question on > avw.lv2. I installed those plugin's to work through a tutorial on > synth building in ingen (you may have done the tutorial). That works > fine in ingen. However, if i have that lv2 plugin set installed, > qtractor will not start for me.. if i uninstall the set, qtractor > starts fine. have you seen this behavior? Qtractor doesnt segment > fault or anything.. it just hangs. I tried with both 0.5.6 and current > svn head. > > Have you seen this? No I haven't seen this behaviour, but I haven't been using QTractor that much. What repository did you use for the plugins, LV2 and QTractor?

11 years, 10 months

Re: [LAD] Optimized device driver to Fast Track Pro (start developing)

by Guillaume Pellerin

On 23/11/2012 20:01, rodrigo(a)angoera.com.br wrote: > > Hi !!!!! > > The Fast Track Pro is USB 1.0, the max bandwidth is 12Mb/s. The TUSB3200 has > the isochronous USB transfer mode, that can occupy about 90% of the USB > bandwidth... Using 4 channel (2 IN and 2 OUT) with right and left, and 24 bits > (3 bytes each, in total 4(channel) * 2(left,right) * 3(data) = 24 bytes ) The > max bandwidth that could communicate is about 12Mbits/s = 1.5 Mbytes/s | 1.5 > Mbytes/s * 0.9 = 1.2 MBytes/s --> 1.2MBytes/s / 24 bytes = 50Khz ... So the > maximum USB 1.0 with 24 bits is 4 chanel in 48KHz... > You're absolutely right, the 24 bits 4 channels mode would be only accessible in 48 kHz samplerate. > I would like to know how it works the interface between USB AUDIO CLASS device > driver and the USB-AUDIO Alsa Device driver. And how does the isochronous > comunication works inside the kernel? Because I am using an RT Kernel and I > would like to set with the high priority this communication. > I don't really know how does the isochronous, but applying usual RT security audio rules seems sufficient to get high priority access and then very low latency (got 3 ms here with few audio realtime processes..). Further info here: http://joegiampaoli.blogspot.fr/2011/06/m-audio-fast-track-pro-for-debian-l… G

11 years, 10 months

eigenlabs + linux

by Alexandre Prokoudine

Hi, Is anybody interested to help Eigenlabs figure out the USB layer to get their stuff ported to Linux? http://www.eigenlabs.com/forum/threads/id/1148/ They are very free software friendly. Their code is available under GPL, they have a very good understanding of working with community while staying an enterprise (the instruments are not open, as far as I can tell), and, needless to say, the instruments they do are beyond awesome. Alexandre Prokoudine http://libregraphicsworld.org

11 years, 10 months

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Linux-audio-dev