Linux-audio-dev

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7448 discussions

by Fons Adriaensen

Hello all, Does anyone know of a way to monitor or poll Ardour's (global) 'record-armed' and/or 'recording' states from the outside ? The purpose is to control a 'recording' light in the studio. Ciao, -- FA Vor uns liegt ein weites Tal, die Sonne scheint - ein Glitzerstrahl.

12 years, 7 months

Re: [LAD] Tutorial for programming with JACK

by Kjetil Matheussen

Emanuel Rumpf: > > Am 8. M?rz 2012 01:08 schrieb <kallipygos(a)inbox.lv>: >> >> It is possible with (curses-ansi escapes) TUI vary sine parameters - >> Frequency and amplitude. >> > Possible with restrictions: > You cannot call blocking functions in jacks process() function. > Thus non-blocking inter-thread communication may be necessary. > >> >> Is it possible this program __as_is__ rewrite for jack output ? >> > > Jack Audio uses a _callback_ based api. > What you have there is not. > > You could re-use the above code with simple adjustments > by adding an additional bridging library. > (Eventually causing loss of realtime capabilities.) > > Look at : > > bio2jack -- http://bio2jack.sourceforge.net/ > Shouldn't be used. bio2jack both allocates memory and locks a mutex in the process callback. (yes, it still does, look at the code on sourceforge) > jackasyn -- > > http://packages.debian.org/search?suite=default&section=all&arch=any&search… > (I couldn't find its original home) Good advice. jackasyn is made properly.

12 years, 7 months

Tutorial for programming with JACK

by Kris Calabio

I want to learn how to program with JACK. I found this tutorial: http://dis-dot-dat.net/index.cgi?item=/jacktuts/starting/ linked from this page ( http://jackaudio.org/documentation ). I noticed that the tutorial has some broken links. Is this still a good resource to learn from? Or are there any better ones out there? Any suggestions will be much appreciated. Thanks, Kris

12 years, 7 months

Laborejo Release 0.1 Announcement

by Nils

Laborejo, Esperanto for "Workshop", is used to craft music through notation. It is a Lilypond GUI frontend, a MIDI creator and finally a tool collection to inspire and help you compose. It works by reducing music-redundancy and by seperating layout and data. Don't worry about the layout, just concentrate on the music. Screenshot (Laborejo and Lilypond, side by side): http://www.laborejo.org/images/screenshots/2012-01-31-223820_3840x1080_scro… This is the first release, version number 0.1 Download: https://github.com/nilsgey/Laborejo/tarball/0.1 Dependencies: http://www.laborejo.org/documentation There are too many features to mention them all and too many missing features and bugs to warn you. Most important known problems: * This is Alpha Grade Software. Don't use for long-term work. However, the produced midis and PDFs will last forever. * Performance can get bad very quickly if you use Containers. * There is no built-in sophisticated midi player/jack midi output yet. You have to export midi files. * Documentation is nearly non-existent. Have fun, it would be nice to hear from you! Nils http://www.laborejo.org (All kinds of crazy social web services are linked there!)

12 years, 7 months

[ANN] Qtractor 0.5.4 - Echo Victor shouts out!

by Rui Nuno Capela

Howdy, There's no victory over anything whatsoever. Read it again, it's just a codename. If that serves anything at all, to my own defense that is, Qtractor is still a pet project hobby of mine, as all things in Linux audio world for that matter. There's been too many saying and comparing Ardour vs. Qtractor. I'm seeing if often said in too many sentences lately and, believe me, I cannot stand comfortable with that saying no more. So here it goes: Ardour is a full fledged, pro-level DAW and, for crying out loud on its own, the flagship of the free/open-source pro-audio fleet and movement, not only Linux anymore nowadays. On the other hand, Qtractor is 'a sequencer' (hinted by its own subtitle, in case you didn't notice) with a twist and a few of a DAW features. And it strictly runs on the Linux platform only and most important yet, it has been targeted to a (re)creational personal home-studio audience ever since. Heard about the 'techno-boy bedroom' (with a guitar) folk? Well, that's exactly what it is, from day zero. Hope you all get the picture ;) Enough whining. Qtractor 0.5.4 (echo victor) is out and is shouting out loud! Release highlights: * Panic command button (NEW) * Improved audio/MIDI file resource management (NEW) * MIDI SysEx for instrument plugins (NEW) * MIDI Controller auto-hook option (NEW) * MIDI Tools resize ramp (NEW) * Revised plugin search directory paths (FIX) * MIDI zero-duration note-on/off queueing (FIX) * Audio linked-clips looping (FIX) Website: http://qtractor.sourceforge.net Project page: http://sourceforge.net/projects/qtractor Downloads: - source tarball: http://downloads.sourceforge.net/qtractor/qtractor-0.5.4.tar.gz - source package (openSUSE 12.1): http://downloads.sourceforge.net/qtractor/qtractor-0.5.4-3.rncbc.suse121.sr… - binary packages (openSUSE 12.1): http://downloads.sourceforge.net/qtractor/qtractor-0.5.4-3.rncbc.suse121.i5… http://downloads.sourceforge.net/qtractor/qtractor-0.5.4-3.rncbc.suse121.x8… - long time ago, far far away: user manual: http://downloads.sourceforge.net/qtractor/qtractor-0.3.0-user-manual.pdf Weblog (upstream support): http://www.rncbc.org License: Qtractor is free, open-source software, distributed under the terms of the GNU General Public License (GPL) version 2 or later. Change-log: - Direct access plugin/insert parameter changing tool-tip added. - A Transport/Panic action enters the scene, in a nostalgic attempt to emulate the all-MIDI-track-shut-off command of those drop-dead and primordial MIDI sequencers of all time. Now finally a keyboard shortcut and mouse click-away ;) - MIDI editor command redo/undo adjustment now effective on all other channel events besides notes, which overlap at the same event time. - A new File/Unlink menu action is now made available from the MIDI clip editor (aka. piano-roll) for detaching the current linked/ref-counted MIDI clip into a new auto-incremented SMF filename. - Some audio/MIDI content/media-file resource management is entering the scene, taking care of some file-system house-keeping, this gets evident on unsaved/dead recorded files being automaticaly removed from the file-system, on session close. - Killed the old and entirely deprecated LV2 Save/Restore and Persist feature/extensions support. - Auto-monitored MIDI events are now merged/queued correctly into the instrument plugin playback queue, avoiding sudden crashes, hopefully. - Awesome patch from Albert Graef, thanks, which makes most MIDI SysEx to get through MIDI instrument plugins at last; applies to DSSI and LV2 plugins only. - LV2 URID map/unmap feature support added. - Plugin parameter value redo/undo command aliasing fix. - Double-clicking in plugin list item now show/activates the plugin's editor window (was toggling visibility/activation). - Plugin path settings have been fixed again, with special regards to an effective LV2_PATH environment variable settlement. - Session properties dialog now asks to create a new session directory if the given one does not currently exist. - MIDI note names and their respective octave numbers are now compliant with the ISO standard where middle C (60) is now C4 (was C3). - Fixed audible glitch/pop at the beginning of an audio clip with long quadratic or cubic shaped fade-in (reported by Lougi Verona, thanks). - MIDI Controller Auto-Hook patch by Alessandro Preziosi, thanks. - Make sure all MIDI note-off are always queued after their respective note-on events when buffering for MIDI input of instrument plugins, event though for zero duration MIDI note events (hopefully fixing the hanging notes bug #3476124, as reported by Albert Graef, thanks). - LV2 MIDI-fx plugin support has been repaired. - Single-track clip selection logic corrected again, fixing multi-clip selection drag/move across an odd number of distinct tracks (after a bug report by Louigi Verona, on linux-audio-dev, thanks). - MMC Locate time-code hour bit-field fix; MMC Locate now also on loop turnarounds (patches by Albert Graef, thanks). - Looping across multiple linked/ref-counted audio clips was incredibly broken with complete out-of-sync playback. Hopefully fixed now, with auto-unlinking/cloning all the affected audio clip buffers. - Audio clip overlapping detection off-by-one(-frame) fix. - MIDI Tools/Resize value ramp mode has been added (mocking the 'resize to range' feature request #3467894, by Daniel MacDonald aka. danboid). Enjoy && Have fun! -- rncbc aka Rui Nuno Capela rncbc(a)rncbc.org

12 years, 7 months

Re: [LAD] [LAU] Music made with Linux: Airship - A 16bit Soundtrack Theme

by Carlos sanchiavedraz

2012/2/29 Kevin Thoma <kevin.thoma88(a)gmail.com> > Hi there, > > really liking the piece, great job! And having just played one of those > RPGs for the first time in ages (and I do remember them from my childhood > days as well...), I can attest to the fact that it would them nicely. ;) > I agree that taking the drums out for one of the quieter parts would have > made for some nice contrast, but yeah, that's not a must. > > Best Wishes > Kevin > > > On Wed, Feb 29, 2012 at 6:30 PM, Nils <list(a)nilsgey.de> wrote: > >> Hello list, >> >> I would like to share a piece I've just finished. >> The original blog entry is here, but for your convenience I'll include a >> copy into this mail. >> Feel free to use any channel you want if you would like to comment on it. >> http://www.nilsgey.de/2012/02/29/airship-theme/ >> >> Airship - A 16bit Soundtrack Theme >> direct download: http://www.nilsgey.de/uploads/NilsGey-AirshipTheme.mp3 >> >> I have finished my first just-for-fun composition since a very long time >> ago. It is a game-soundtrack like piece I named “Airship”. I can imagine >> this in a Japanese 90’s RPG from the SNES or Sega Genesis/MegaDrive era. >> >> Software used: Laborejo composition and midi generation, Fluidsynth for >> midi to wave rendering and Ardour for the fadeout :) . >> >> I used an .sf2 called Setzers SPC which I have downloaded here. I am not >> sure about the soundfonts legal status so I am careful and release the >> Airship Theme not as a free piece but just as: Listen to it freely, share >> and redistribute it but don’t use it in any work, derived or original, or >> as part of a game or video etc. Don’t do anything commercial with it and >> don’t change the mp3 tags. If you find a named, matching License to this >> description feel free to use that instead. >> >> I would be very happy if you leave a comment or click this blogs “Like” >> button. >> >> >> Greetings, >> >> Nils >> http://www.nilsgey.de >> http://www.laborejo.org >> _______________________________________________ >> Linux-audio-user mailing list >> Linux-audio-user(a)lists.linuxaudio.org >> http://lists.linuxaudio.org/listinfo/linux-audio-user >> > > > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user(a)lists.linuxaudio.org > http://lists.linuxaudio.org/listinfo/linux-audio-user > > Hi, I concur with some said already; it reminds a bit of some soundtrack for a game and maybe, at 1:00 min and at 4:30 aprox., would be nice to have a quiet part as a middle section to rise then up as an anthem. Also would be advisable some processing (Delay, Reverb) on the mix to make the sound a more realistic, to mitigate the rude MIDI sound, and as if recorded in some space, a large hall i.e. Nice music, Thanks for sharing, Nils -- Carlos sanchiavedraz * Musix GNU+Linux http://www.musix.es

12 years, 7 months

Re: [LAD] ALAC codec being added to libsndfile

by Erik de Castro Lopo

Georg Holzmann wrote: > Hallo! > > > The only real problem I've had doing it is finding time to work > > on it. Fortunately I am pretty sure I will find time to work on > > this between xmas and new year. > > Thanks for the answer! > If you need any testing or something else let me know! Hi Georg, Support for 16 bit ALAC is in Git at: https://github.com/erikd/libsndfile Support for other bit widths will be added in the near future once I know the 16 bit stuff is working. Cheers, Erik -- ---------------------------------------------------------------------- Erik de Castro Lopo http://www.mega-nerd.com/

12 years, 7 months

OSC sequencer idea (was: Qtractor 0.5.4 - Echo Victor shouts out!)

by Stephen Sinclair

It seems this debate is how to represent OSC messages in a sequencer. I've thought about this before, and the idea I always had in my head was something tracker-like, where you would assign columns (or rows..) to a message path, and specify whether the arguments are ints, floats, etc. For each argument the column would contain subcolumns with fields allowing editing of these values. Any row that is all "nil" would mean "do not send a message." The editor might allow a special column type called "note" which is represented on-screen as a note name (A#3 or whatever) but sends out the value as an integer or float. Alternatively the editor could be told the min/max values of the subcolumn and represent it as horizontal bars or a line plot, etc. I even started working on such a thing once, with the intention of controlling sequences for custom synths written in e.g. Chuck or PureData. However, I never got far with it as I had other things to do. In any case, in this paradigm, the user would define a patch in Pd (or....) which accepts certain control or trigger messages, and therefore the sequencer would need to be told what messages to send it. No need to "standardize" the messages for any particular representation, since it would be different for each patch anyways. (The "sequence + patch" would be considered together as the music file.) What I like about this is that it would allow a user to use whatever program he/she wants for sound synthesis, but have keep a consistent sequencer interface. You could even use multiple back-ends for sound synthesis in the same track. p.s. thanks Jonathan for bringing up libmapper. For those who don't know, libmapper is an attempt to create a "glue" layer for OSC-supporting programs. Instead of standardizing on a set of messages, the idea is to instruct sending programs to translate their messages into the format required by the receiver, including any data transformation (scaling, etc). This allows programs to use any message names they want, keeping the usefulness of readable, program-specific semantic naming schemes, while still being able to connect to each other. Still under heavy development, but it's quite functional, web site is at http://libmapper.org Steve On Sun, Mar 4, 2012 at 4:27 PM, Albert Graef <Dr.Graef(a)t-online.de> wrote: > On 03/04/2012 06:32 PM, David Robillard wrote: >> >> What do you mean by "pick the OSC addresses that I want"? > > > I mean those symbols with the slashes that are the first part of any atomic > OSC message like /foo/bar 4711.0. Usually such a symbol would denote the > particular control that the value applies to. When using OSC as input to or > output from automation, obviously I'd have to specify which OSC addresses I > want to be mapped to which automation parameter. > > However, I'd actually prefer a kind of separate OSC track which would be > connected to OSC inputs and outputs and listens for all OSC messages on its > OSC inputs, no matter what the addresses are. So (an ASCII representation > of) the contents of such a track might look like > > # delta OSC addr value > 0 /foo/bar 0.78 > 10 /reverb1/wet 0.3 > 5 /foo/bar 0.66 > etc. etc. > > By these means the OSC track would just record any messages that it receives > on its inputs, and I might then map them to the appropriate automation > parameters on other (audio and MIDI) tracks in the DAW, or just have them > played back via the OSC outputs assigned to the track, in order to drive > some other application like Pd. > > Dave, will you be at LAC in April? I'd really like to discuss this in more > detail with you, but it's much easier to do this in a room together and with > a whiteboard and a data projector within reach. ;-) If there's enough > interest, maybe we could do a "control beyond midi" brainstorming session at > LAC? Maybe Rui wants to join us there, and I know that some guys at CCRMA > are also interested in this. I guess that the organizers can allocate us a > time slot and a room with the necessary equipment if we just ask for it. > > Albert > > P.S.: Rui, apologies for hitchhiking your thread. I hope that you will > forgive me over a glass of good Californian wine. ;-) > > > -- > Dr. Albert Gr"af > Dept. of Music-Informatics, University of Mainz, Germany > Email: Dr.Graef(a)t-online.de, ag(a)muwiinfa.geschichte.uni-mainz.de > WWW: http://www.musikinformatik.uni-mainz.de/ag > _______________________________________________ > Linux-audio-dev mailing list > Linux-audio-dev(a)lists.linuxaudio.org > http://lists.linuxaudio.org/listinfo/linux-audio-dev

12 years, 7 months

preset saving in sessions

by parched2099

With the advent of NSM, there's a better chance than ever for autoloaded sessions when working. One of the challenges of autoswitching between sessions is loading presets for that session. In, for example LV2rack, it starts, but presets have to be loaded manually, after it gets going. Is there a mechanism for LV2rack, and other standalone plugin hosts, to have a preset automatically load with the selected preset for a session, when that session is selected? An example is lv2rack with the IR lv2 plugin, which i've been testing in NSM. LV2rack comes up ok, but the preset i've built for a specific session doesn't automatically load. I assume this is the case when using something like LV2rack in other session managers too. Where would a call for an autoloaded session saved preset come from? The session manager, or LV2rack itself?

12 years, 7 months

Re: [LAD] [ANN] Qtractor 0.5.4 - Echo Victor shouts out! (Emanuel

by Jeff McClintock

> The chance for MIDI to improve seems very low, due to its technical > limits. HD-Protocol MIDI is coming, albeit with painfully slow progress. Best Regards, Jeff

12 years, 7 months

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Linux-audio-dev