Linux-audio-dev

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7445 discussions

by Julien Claassen

Hello all! I'm sorry to bother you with that, but I don't find a feasable solution for this. It's all about patterns. Imagine the following text examples: <A HREF="url" TITLE="MY_TITLE"> <a NAME="x" id="x"> <P align="center"> What I need to do is make sure, that every TAG (a and p in these cases) and every attribute (href, title, name, id and center in these examples) is lower case. I've tried a lot, but I'm not the crack at patterns and so I got no completely satisfying result, if I got any at all. :-( Could someone please help me here? Kindest regards Julien -------- Music was my first love and it will be my last (John Miles) ======== FIND MY WEB-PROJECT AT: ======== http://ltsb.sourceforge.net the Linux TextBased Studio guide ======= AND MY PERSONAL PAGES AT: ======= http://www.juliencoder.de

15 years, 6 months

testing jack client, errors, shutdown..

by Alex Norman

I'm wondering if it is possible to force a jack client into an error condition without actually changing the client. I'm wanting to see what actually happens when my client's error + shutdown handlers are called. It seems as though my 'shutdown handler' isn't being called when jack shuts down. Thanks, -Alex

15 years, 6 months

Strange network problem ?

by Fons Adriaensen

Hello all, Today I had a strange problem when using the WFS system here. The 'master' PC sends a multicast message every 1024 samples (21.333 ms) to all 'render' PCs. This has to arrive on time, and when it's late the renderers will mute their output and report the error in their status messages. Today I used some ssh -X logins from my laptop in the WFS room to the WFS master to run Ardour and some other apps for a demo. All this worked well all the time, as it has done before. I left everything running when going for lunch with our visitors, and when I returned restarted Ardour to listen again. I got a lots 'of 'message too late' errors from the rendering machines, and interrupted sound. Strange enough this seemed to be related to the _volume_ of the sounds... In other words to Ardour's level meters. Restarting Ardour in a new ssh login did not help, but running it directly on the WFS master solved the problem. So apparently the network traffic required to update Ardour's meters was causing the delays. And clearly the whole remote X session was slower than normal. CPU loads looked normal. Now all this should be peanuts for a Gbit network that has no other traffic at all, and it worked perfectly before. I just never left it running for such a long time. Anyone an idea as to what is happening here, and how it could be cured ? TIA, -- FA Laboratorio di Acustica ed Elettroacustica Parma, Italia Be quiet, Master Land; and you, Professor, will you be so good as to listen to me ?

15 years, 6 months

[ANN] Qtractor 0.4.0 (foxy dryad) released!

by Rui Nuno Capela

Howdy! It's been quite a while since last time (Fluffy Doll on Xmas:). However, Qtractor is back again on track and this time with great news. And the big news are that this pet is leaving its rusty four-on-the-floor cage and spreading it's musical genre targets. Still a bedroom/home-studio sequencer though, but not for the techno-boy/girl only anymore--if one may trump about it, it's getting a general-purpose sticker now. And what makes it like just that? One long due feature, now stroked by implementation lightning: Tempo/Time-signature Map. Or in other words: project sessions may now have multiple parts with different tempo (BPM) and/or time-signatures. Tempo/time-signature map is/was a very pervasive feature change. Although deeply internal, as it's only evidently visible from the new View/Tempo Map... interactive yet primitive dialog, it is also accessible by double-clicking on the time rulers (main track-view and MIDI clip editors) and by left-clicking over the main tempo spin-box, which also introduces the time-signature figures as seen from the current play-head position. One should probably say that this is the major change in Qtractor internals since its primordial inception. No doubt, we're still in /alpha/ status. It surely will take a (another) while, a year or so, for a similar payload take a lift, ever again. No sweat. Watch for next favorite feature requests, like MIDI controller map/learn/feedback and automation. Coming next, soon, hopefully :) A few words of caution must be said now. It is of paramount interest for all of you who already use Qtractor for any (small) project or prototype, to be prepared for less amenable surprises. Being optimistically wise, there's a very good chance that all new workings will bring a better experience overall. But given the whole nature and depth of what got through, it is wise enough to have your backups at hand and up to date. Don't hesitate asking for help, in any case. Caveat emptor! So, with no further ado, there it is: Qtractor 0.4.0 (foxy dryad) is now released! Good old intro/description: Qtractor is an audio/MIDI multi-track sequencer application, written in C++ on top of Qt Software's Qt4 framework, having JACK and ALSA as its main infrastructures and Linux as native and exclusive platform. Specially suited to the lone-wolf composer, arranger and (re)creative music-maker personal home-studio, it still hopes to evolve as a fairly featured desktop audio/MIDI workstation or at least, a prototypical part of it ;) Release highlights: * Tempo-map/Time-signature support. (NEW) * MIDI Song Position cueueing support. (NEW) * MIDI Clip Quantize command. (NEW) * Zoom direction mode option (NEW) * MP3 audio format support (FIXED) * and many other assorted fixes and brand new bugs ;) Website: http://qtractor.sourceforge.net Project page: http://sourceforge.net/projects/qtractor Downloads: - source tarball http://downloads.sourceforge.net/qtractor/qtractor-0.4.0.tar.gz - user manual http://downloads.sourceforge.net/qtractor/qtractor-0.3.0-user-manual.pdf (nb. yes, it's the same old, dusty and outdated manual, sorry) 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. Features: - Multi-track audio and MIDI sequencing and recording. - Developed on pure Qt4 C++ application framework (no Qt3 nor KDE dependencies). - Uses JACK for audio and ALSA sequencer for MIDI as multimedia infrastructures. - Traditional multi-track tape recorder control paradigm. - Audio file formats support: OGG (via libvorbis), MP3 (via libmad, playback only), WAV, FLAC, AIFF and many, many more (via linsndfile). - Standard MIDI files support (SMF format 0 and 1). - Non-destructive, non-linear editing. - Unlimited number of tracks per session/project. - Unlimited number of overlapping clips per track. - XML encoded session/project description file. - Point-and-click, multi-select, drag-and-drop interaction (drag, move, drop, cut, copy, paste, delete, split) - Unlimited undo/redo. - Built-in mixer and monitor controls. - Built-in connection patchbay control and persistence (a-la QjackCtl). - LADSPA, DSSI and native VST plug-ins support. - Unlimited number of plug-ins per track or bus. - Plug-in presets, programs and chunk/configurations support. - Audio/MIDI clip fade-in/out (linear, quadratic, cubic). - Audio/MIDI clip gain/volume, normalize and export. - Audio clip time-stretching (WSOLA-like or via librubberband), pitch-shifting (also via librubberband) and seamless sample-rate conversion (via libsamplerate). - Audio/MIDI track export (mix-down, merge). - Audio/MIDI metronome bar/beat clicks. - Unlimited tempo/time-signature map. - MIDI clip editor (matrix/piano roll). - MIDI instrument definitions (a-la Cakewalk(tm)) - JACK transport sync master. - MMC control surface enabled. - MIDI Song Position cueuing support. - Configurable keyboard shortcuts. Change-log: - MIDI (re)connections fix; now caring for the ALSA client and port textual names only, avoiding as much as possible, any reliance on those volatile client and port numbers. - Transport/Backward and Forward commands may now reset to immediate full start or end of session locations, by just pressing the Shift or Ctrl keyboard modifiers and clicking their respective toolbar buttons. - Default session/MIDI resolution has been set to 960 ticks per beat (960 TPQN, where a beat equals a quarter-note); it is worth of note that the previous default resolution was set to one order of maginute lower, ie. 96 TPQN ;). - Making (dis)connections now also flags session as dirty. - Internal Audio/MIDI engines queue/time drift correction takes a brand new approach, specially adapted to rolling tempo/time-siganture changes. - MIDI monitor refresh-cycle slight internal optimization. - Converted obsolete QMessageBox forms to standard buttons. - Transport/Rewind and Fast-forward commands may now be set to double-speed, by pressing the Shift or Ctrl modifiers while clicking their respective tool buttons. - MIDI clip editor zoom ratios are now saved and preserved across sessions. - Time-signature is now directly accessible from the main tempo spin-box which also reflects current tempo status. - Time/frame spin-boxes now allow to step change each field individually, depending on the cursor beam position. - Make sure that Transport/Follow playhead option is only effective when playback is actually rolling. - Primordial attempt to include MIDI Song Position Pointer (SPP), Song Start, Stop and Continue sequencing support. - A completely new time-scale infrastructure is now in place, with full support for session tempo and time-signature map; this long due feature is primarily accessible through the main menu, View/Tempo Map...; also by double-clicking on the the main window and MIDI clip editor time rulers and left-clicking on the main toolbar tempo/signature spin-box. - Moving and resizing individual clips now cares for track proper ordering and overlapping changes, avoiding nasty out of sequence clips and other unpredictable effects. - An expedite MIDI clip quantize command is now available from the main track view menu (Edit/Clip/Quantize), which simply applies the current snap-to-beat setting to a MIDI clip range selection. - Fixed that hideous bug affecting overlapped audio clips when playhead gets moved backward, causing the playback of those audio clips in particular, go out of sync. - Tracks are now limited to their minimum height, specially effective in face of vertical zooming. - Zoom mode option introduced (on menu View/Zoom/Horizontal, Vertical, All). - Tempo beat type is a new session property; however it is not yet user modifiable and currently disabled to default MIDI quarter note (1/4). - All open MIDI clip editor time-scales are now updated and corrected when the main session time base changes (tempo, time-signature, resolution, etc.) - MIDI metronome fixed, preventing duplicate click events. - MP3 audio file decoding was broken for way too long and falling short for every file with custom frames, ID3 tags and comments. Got shamefully fixed. - Time signature denominator (ie. beat divisor) is now an accessible and effective session property. - Attempt to retain original size (clip length) of all audio clips when changing the global session tempo and automatic time-stretching is not an option. Cheers && Enjoy! -- rncbc aka Rui Nuno Capela rncbc(a)rncbc.org

15 years, 6 months

Speech noise removal

by Olivier Guilyardi

Hi, I'm looking for material, docs and/or software to remove speech noise, as caused by the movements of the mouth. Any pointer? -- Olivier

15 years, 6 months

cross platform audio lib for wav and mp3 files reading

by vincent meserette

Hi all ! I'm new in this group, and also a newbie in audio dev on linux... I'm looking for a cross platform library con which I could read wav and mp3 files, and pass the steams that I have read to portaudio. Does anyone know which library could I use, under the LGPL licence ? I found some libraries to read wav files (like libsndfile) but none to read both mp3 and wav Thanks in advance Regards Vincent

15 years, 6 months

New release of jconv

by Fons Adriaensen

Hello all, Jconv-0.8.0 is now available at the usual place <http://www.kokkinizita.net/linuxaudio/downloads> New in this release: - New command line option -L <nsamples>, tries to compensate for 'nsamples' of processing latency. - Jack ports can now be given meaningful names and optionally be connected, by commands in the config files. - Some new reverb IRs available in a separate package 'jconv-reverbs'. Includes ambisonic and stereo IRs of the concert hall of La Casa della Musica, and the former Santa Elisabetta church, now La Casa del Suono, in Parma. Enjoy ! -- FA Laboratorio di Acustica ed Elettroacustica Parma, Italia Be quiet, Master Land; and you, Professor, will you be so good as to listen to me ?

15 years, 6 months

[ann] QuteCsound 0.4

by Andres Cabrera

Hi all, (And apologies for cross posting) I'm pleased to announce QuteCsound version 0.4. This version incorporates new features and bug fixes arising from the 3 previous Release Candidate releases. QuteCsound is a simple frontend for Csound featuring a highlighting editor with autocomplete, interactive widgets and integrated help. It is a cross-platform drop in replacement for MacCsound (it can open files created in MacCsound), and aims to be a simple yet powerful and complete development environment for Csound. QuteCsound 0.4 has been tested on Windows, OS X, Linux and Solaris, and it is free software released under the GPL. You can get it here: http://sourceforge.net/project/showfiles.php?group_id=227265&package_id=275… There's more information here: http://qutecsound.sourceforge.net/ Questions, comments and suggestions can be posted to the main Csound mailing list, or join the QuteCsound users mailing list at: http://lists.sourceforge.net/lists/listinfo/qutecsound-users Thanks very much to all the people (particularly Joachim Heintz), who have provided great feedback and ideas to improve QuteCsound. Also a big thanks to Andy Fillebrown for the fixes for Windows and for preparing the Windows installers. Enjoy! Andrés Changes from version 0.4RC2: New: - Added "_Browse" channel for value buttons, which open a browse file dialog and send the selected file name to any widget with the same channel which can receive strings, like LineEdit. Added this feature to the reserved channels example. - New tutorials and example files, with clearer names. The examples can now be run directly WITHOUT saving, which is very handy especially for testing audio IO. - Console text font color can now be changed - Added a close tab button on the right corner of the tabs panel. - Modified execute code for Windows (for external utilities and terminal) - Added option to enable/disable line wrap - Added clear option to console context menus - MacCsound output filename is now parsed and added to the options - Added new FM and additive examples Fixed: - Improved stability - Files with extensions different to csd, orc and sco can now be opened - External programs and terminal are now launched correctly on all platforms - Fixed storing changes in widget panel when tab changes - Graph widget now displays graphs generated by ftgen - Widget values are now properly sent for the first control period - Files now open properly on OS X when double clicked from the Finder - Fixed problem when buffering messages - Fixed problems with filenames with spaces when rendering or opening in external programs - MacCsound sections are only created if save Widgets preference is set - New default file more consistent with current state. - Files are now not marked as modified when changing tabs - Fixed path of Manual for newer versions - Fixed resizing and moving widget edit frames when changed from the properties dialog

15 years, 6 months

Anyone out there familiar with the code base of sonic visualizer?

by Nathanael Anderson

Anyone on the list familiar with the code base of sonic visualizer? I'm wondering if it would be possible to make a standalone program that works multiplatform and can read live audio data, and return an array of the likelyhood that each note was played in an audio stream in the previous 20ms (not a hard limit, just an example). Similar to how the melodic range visualization works, everytime x samples are read, check which chords, and octives they fall into, so say there is an 88 position array of all notes that are on a keyboard, and middle c is played, so position 60 in the array would get a high value. I want to be able to work off acoustic data. This in not going to be used to drive a sequencer or anything. I just want to be able to check if said note was played. Thanks in advance for any feedback. If there is another program that you think would provide better results please let me know. I've tried aubio, and it crashed all the time on me. Nathanael

15 years, 6 months

Re: [LAD] [alsa-devel] [PATCH] [SOUND] recording gain control

by Viral Mehta

Takashi Iwai wrote: > At Tue, 10 Mar 2009 10:00:13 +0100, > Clemens Ladisch wrote: > >> (CC alsa-devel) >> >> Viral Mehta wrote: >> >>> Hi, >>> >>> I am trying to do gain control while RECORDING for my Audio Mic device. >>> >>> My application opens /dev/mixer device and calls ioctl(fdmixer, >>> MIXER_WRITE(SOUND_MIXER_MIC), ...) >>> >>> But, the call fails. It traces to sound/core/oss/mixer_oss.c file and >>> snd_mixer_oss_put_volume1() function. >>> It never falls in "if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)" >>> as condition "if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) " >>> comes as false. >>> >>> I think there is a bug in kernel and I think it should be like as below, >>> >>> --- sound/core/oss/mixer_oss.c 2008-12-03 13:24:02.000000000 +0530 >>> +++ sound/core/oss/mixer_oss.c 2009-03-09 16:22:06.548766896 +0530 >>> @@ -688,7 +688,7 @@ static int snd_mixer_oss_put_volume1(str >>> >>> if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) { >>> snd_mixer_oss_put_volume1_vol(fmixer, pslot, >>> slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right); >>> - if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) >>> + } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) { >>> snd_mixer_oss_put_volume1_vol(fmixer, pslot, >>> slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right); >>> } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) { >>> snd_mixer_oss_put_volume1_vol(fmixer, pslot, >>> slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right); >>> >> Your mailer mangled the patch; see linux/Documentation/email-clients.txt. >> > > Also, the current code behaves intentionally so (as it's designed for > mic-loopback volume). > > A more feasible fix would be to add another if check for *_CVOLUME > instead of moving it. > > > Oh okie. It makes sense. I just sent out a patch on LAD. Should I resubmit with what you proposed ? > Takashi > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo(a)vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > > > Email Scanned for Virus & Dangerous Content by : www.CleanMailGateway.com > > > -- _____________________________________________________________________ Disclaimer: This e-mail message and all attachments transmitted with it are intended solely for the use of the addressee and may contain legally privileged and confidential information. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, copying, or other use of this message or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately by replying to this message and please delete it from your computer. Any views expressed in this message are those of the individual sender unless otherwise stated.Company has taken enough precautions to prevent the spread of viruses. However the company accepts no liability for any damage caused by any virus transmitted by this email. __________________________________________________________________________

15 years, 6 months

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Linux-audio-dev