Linux-audio-user March 2013

linux-audio-user@lists.linuxaudio.org

114 participants
126 discussions

Re: [LAU] State of Linux - was - LightWorks for Linux Demo

by Len Ovens

On Wed, March 20, 2013 8:07 am, Len Ovens wrote: > Speaking of which. Where is ALSA at? Where is firewire support? or > bluetooth support? If there is one area I would like to see more > developers that would be it. Jack supports more than ALSA with FW and > pulse (much as it is hated) supports BT audio that alsa doesn't. If there is one place I would like to see those who spend money on Linux coders put money into this would be it. I think the HW manufactures might be willing to talk to people who are in a business over a "hobbyist". If Harrison (for example) went to any of the Audio Interface makers and said we would like your IF to work with our product, that would get more response than an alsa developer who only talks through email or some user saying "why don't you have a linux driver?" What has happened instead? Pulse has BT support directly. The money/dev time has skipped alsa. What can we as musicians do to help here? PS is Harrison going to release a Mixbus based on A3? They have dropped the MB2 prices, but no coming soon messages. -- Len Ovens www.OvenWerks.net

12 years

Re: [LAU] Python3 PyAlsa Build fails

by Christoph Kuhr

Hi, thanks for your help! > #ifndef Py_TYPE > #define Py_TYPE(ob) (((PyObject*)(ob))->ob_type) > #endif worked, with replacing *self->ob_type* by *Py_TYPE(self)* in any C-file. now I ran into another compilation problem, which I could not find any solution to: pyalsa/alsaseq.c:505:13: error: 'PyInt_Type' undeclared here (not in a function) pyalsa/alsaseq.c:508:3: error: 'Py_TPFLAGS_HAVE_GETCHARBUFFER' undeclared here (not in a function) pyalsa/alsaseq.c:509:5: error: 'Py_TPFLAGS_HAVE_CLASS' undeclared here (not in a function) pyalsa/alsaseq.c:510:5: error: 'Py_TPFLAGS_CHECKTYPES' undeclared here (not in a function) Do you have any suggestions? Regards, Ck

12 years

Python3 PyAlsa Build fails

by Christoph Kuhr

Hi everyone, I was trying to build the alsaaudio/pyalsa module for Python 3. I converted the Python sources with 2to3, afterwards gcc fails to build the module pyalsacontrol.c: pyalsa/alsacontrol.c:184:6: error: ‘struct pyalsacontrol’ has no member named ‘ob_type’ I could not not find any definition of "ob_type". Has anyone solved this problem? Regards, Ck

12 years

screencast using jack

by Federico Bruni

I'm trying to figure out how to make a screencast using jack. I have a microphone connected to a firewire soundcard. I've already excluded recordmydesktop, at least for the audio track, because of this bug: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=649824 "recordmydesktop: Specifying --use-jack makes recordmydesktop exit with a bad screen geometry" recordmydesktop works fine if run without --use-jack. I may use it for video only. What about audio? I'm trying jack_capture, which seems nice but I can't make it work: the .wav file generated is mute. Can you help me? Thanks -- Federico

12 years

SysV init scripts vs. systemd, a short note

by Fernando Lopez-Lezcano

Hi all, Hopefully this will be useful to others. I just wrote a short note describing my experiences when moving from a SysV init script based OpenMixer[*] system to one that uses systemd. In short, yes, it is possible, no, it was not easy (mostly because of my own ignorance of systemd, of course :-) https://ccrma.stanford.edu/~nando/plog/20130315/ Enjoy! -- Fernando [*] OpenMixer is a mixing and routing application written in SuperCollider that manages audio for our 22 channel 3D Listening Room. It has to start on boot and runs as the "openmixer" user and group, and I wanted it to not use a regular Desktop "autologin" feature but rather be a SysV init service... https://ccrma.stanford.edu/room-guides/listening-room/ https://ccrma.stanford.edu/software/openmixer/manual/

12 years

[ANN] Qtractor 0.5.8 - The India Romeo is out, singing a serenade...

by Rui Nuno Capela

Spring is nigh. Qtractor 0.5.8 (india romeo) is out, singing a serenade... Nothing but the change-log (see below:)) Enjoy && lots of fun. Website: http://qtractor.sourceforge.net Project page: http://sourceforge.net/projects/qtractor Downloads: - source tarball: http://downloads.sourceforge.net/qtractor/qtractor-0.5.8.tar.gz - source package (openSUSE 12.3): http://downloads.sourceforge.net/qtractor/qtractor-0.5.8-5.rncbc.suse123.sr… - binary packages (openSUSE 12.3): http://downloads.sourceforge.net/qtractor/qtractor-0.5.8-5.rncbc.suse123.i5… http://downloads.sourceforge.net/qtractor/qtractor-0.5.8-5.rncbc.suse123.x8… - quick start guide & user manual: http://downloads.sourceforge.net/qtractor/qtractor-0.5.x-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: - Dropped old audio ramping spin-locks as its glitching reduction weren't that effective anymore. - Audio bus and track gain may now be set for amplification again, from +0dB up to +6dB, while using the Mixer strip sliders/faders (an old function found missing ever since pre-TYOQA). - Basic LV2 X11 UI support has been added through libSUIL but only really effective if plugins doesn't support the LV2 External UI extension in addition which takes precedence on any case. - Improved precision tolerance on the Tempo Map / Markers dialog. - Reinstated and fixed (old) warning and impending re-conversion on loading session files which the original sample-rate differs from current audio device engine (aka. JACK). - LV2 Plugin State/Preset name discrimination fix (after a ticket by Jiri Prochaszka aka. Anchakor, thanks:) - Linked/ref-counted audio clips must not overlap and now must have a buffer-size worth of a gap between each other. - Something fishy has been detected in the SSE (not so) optimized code from SoundTouch's-inspired WSOLA time-stretching. - Splitting clips apart is now easier than ever: a brand new entry enters the main menu scene: Edit/Split (Ctrl+Y) splits up clips according to current range/rectangular selection. - Audio clip offsets are now properly corrected when time-stretching is applied via Shift/Ctrl+dragging any of the clip edges. - One semi-colon typo was hiding proper descrimination of peak files used to draw distinct waveforms of time-stretched audio clips. - Track automation curves are now also affected by Edit/Insert/Range commands. - Finally, some visual feedback is shown while audio track export is running, in he form of a main status progress bar. - New user option: save backup versions of existing session files. - Default session directory now set to regular file's path on load. - A convenient minimum slack duration has been fixed for MIDI SysEx messages. - LV2 Time/position information is now asynchronously fed back into their parameter (control input) ports when designated. - LV2 State is now properly restored for plugins inserted on buses, probably solving the Calf Fluidsynth SoundFont information missing on buses ticket, reported by Albert Graef, thanks. - Fixed an immediate null pointer crash on creating a parentless new group while on the files organizer widget. - Preparations for future Qt5 migration. Cheers! -- rncbc aka Rui Nuno Capela rncbc(a)rncbc.org

12 years

multimedia content

by Patrick Shirkey

Hi, I'm looking for original multimedia content produced with FLOSS software. It can be promotional material, video, documentary, movie, film, TV footage, etc... -- Patrick Shirkey Boost Hardware Ltd

12 years

External USB 2 HD for real-time recording

by Ralf Mardorf

Hi, an external hard drive does spin down too often for my taste. It's a http://www.wdc.com/global/products/specs/?driveID=762&language=1 and I wonder if there's a way to disable it. "All WD external hard drives will spin down (enter into power saver mode) after 10 minutes of drive inactivity. Once the drive is accessed again, the drive will exit from the power saver mode and spin back up. Please Note: This is a permanent feature of most of our external hard drives and cannot be disabled. WD externals that include the WD SmartWare software can use the software to change and/or disable this feature." - http://wdc.custhelp.com/app/answers/detail/a_id/1376/ Regarding to a German PDF SmartWare doesn't support this particular external hard drive and even if it would, it seems to need Windows or OS X. I guess it's impossible to disable it or to increase the time, but perhaps it's better if I anyway ask the community. Is there a way to adjust this feature? I fear that spinning up and down again and again, will reduce the lifetime of the drive significantly and assumed I'll use it for recording, it might cause performance issues. Is it possible to use such drives for recording, without any risk? If I would test it, I might not cover all worst case scenarios, think it wouldn't cause issues and then be surprised if it fails in an unfavorable moment. This drive should be used as a backup media only, but I'm thinking to buy an additional external hard drive for recording, to be able to visit a Windows user (Mac became seldom here :), but to boot Linux from the drive and to record on the drive. Regards, Ralf

12 years

Re: [LAU] Autologin to locked desktop was: Re: LightWorks for Linux Demo

by Len Ovens

On Mon, March 18, 2013 7:37 am, drew Roberts wrote: > Perhaps what would be nice for some is to autologin a particular user and > go > straight to a locked desktop with a screensaver. > Does anyone know how to do this or the equivalent? Warning!! This will require hand editing a file... suggest vi or emacs ;) All kidding aside, for xfce (Xubuntu or UbuntuStudio where this seems to have started) lets do it the gui way :) The settings manager has a selection in the system area called "Session and Startup". This has a dialog that pops up so choose the "Application Autostart" tab. There is an "Add" button at the bottom, it pops up a small dialog... Name: set to "Start Session Locked". Description: "Start Session Locked" (I figure it is self explanatory, but feel free to give a better description). Command: xscreensaver-command -lock Submit that... Ok that took about as much time to figure out as it took to type it all in. Let me test it now :) xscreensaver-command runs too soon and I get: xscreensaver-command: no screensaver is running on display :0.0 in ~/.xsession-errors Ok, try: sleep 5; xscreensave-command -lock It seems that whatever is running the command line does not know what ; means :P What does work: bash -c "sleep 2s ; xscreensaver-command -lock;" And yes, even with 2 seconds delay, at least on my machine, the workstation is locked before the ui is fully up... that is, no menu is yet available. Yes this is probably more than non-CLI literate users can figure out on their own. c-a-f* still works, but the VTs require a password anyway. No I will not be adding this option to UbuntuStudio or suggesting it to the Xubuntu team. (feel free to do so yourself) The only advantage to this I can see is a shorter time from password to use. Could be a pain on machines with more than one user. -- Len Ovens www.OvenWerks.net

12 years

Fwd: AATranslator Release Version 5.6

by Brett McCoy

New version of AATranslator is out. It's an indispensible tool for moving sessions between different DAWs. It also supports Ardour2/Mixbus & Ardour3 (read only for the latter) and runs very well under Wine. ---------- Forwarded message ---------- From: AATranslator <info(a)aatranslator.com.au> Date: Sun, Mar 17, 2013 at 10:02 PM Subject: AATranslator Release Version 5.6 To: AATranslator <info(a)aatranslator.com.au> Hi, As usual we have another release crammed full of improvements and support for additional daw features. A lot of effort in this release has been geared towards conversion of clip 'stretch' and clip 'pitch' details and while we haven't covered every format that we support we certainly have covered most. To make things a little easier we also added 'drag 'n' drop' support so you can just drag the supported file into the import window/pane and you can also drag a folder into the 'location' window/pane and AAT will change its current position to that folder. Like most releases it has been months in the making and as always we thank you for your continued support and once again reinforce our commitment to our product so do not hesitate to contact us for assistance or if you have concerns about our product or a particular conversion. Version 5.6.0.0 * ALS Export: Improved writing of ALS file * ALS Import: Improved reading of ALS file * ALS Import: Now read pitch values for each clip * ALS Import: Now read and convert clip 'warped'/stretch details * Audition XML Export: Now write stretch values for each clip from supported formats (eg ALS, PTF, RPP, RPP, Sam EDL, SAW, Sesx, Tracktion, Vegas XML, Vegas TXT, VIP) * Audition XML Export: Now write pitch values for each clip from supported formats (eg ALS, PTF, RPP, Sesx, Tracktion, Vegas XML, Vegas TXT, VIP) * Audition XML Import: Now read stretch and pitch values for each clip * EDL (CMX) Import: Now attempts to extract audio from MOV files * FCP XML Export: Now write stretch values for each clip from supported formats (eg ALS, Audition XML, PTF, RPP, RPP, Sam EDL, SAW, Sesx, Tracktion, Vegas XML, Vegas TXT, VIP) * FCP XML Import: Now read stretch values for each clip * Nuendo/Cubase XML Export: Fixed error where conversion of large sessions files resulting in huge XML files were not being written to disk * Nuendo/Cubase XML Import: Fixed error causing endless loop with XMLs containing a Video Track * OMF Import: Fixed a file naming issue with OMFs originating from Premiere Pro * PTS Import: Now handles PT version 6.7 PTS files * PTF Import: Fixed missing clip issue for PT (Windows version) 8.0.3 * PTF Import: Now read pitch values for each clip (PT8 & PT9) * PTF Import: Now read stretch values for each clip (PT7, PT8 & PT9) * PTS Import: Fixed errors importing some 6.4 version PTS files * RPP Export: Now write pitch values for each clip from supported formats (eg ALS, PTF, Sesx, Tracktion, VIP) * RPP Export: Now write stretch values for each clip from supported formats (eg PTF, Sam EDL, SAW, Sesx, Tracktion, Vegas XML, Vegas TXT, VIP) * RPP Import: Now read stretch and pitch values for each clip * RPP Import: Fixed an issue reading some RPP files containing a large number of FX * Sam EDL Import: Now read stretch values for each clip * SAW Export: Now write stretch values for each clip from supported formats (eg PTF, RPP, Sam EDL, SAW, Sesx, Tracktion, Vegas XML, Vegas TXT, VIP) * SESX Export: Now write pitch values for each clip from supported formats (eg ALS, PTF, RPP, Tracktion, VIP) * SESX Export: Now write stretch values for each clip from supported formats (eg PTF, RPP, Sam EDL, SAW, Sesx, Tracktion, Vegas XML, Vegas TXT, VIP) * SESX Import: Now read stretch and pitch values for each clip * Tracktion Export: Now available * Tracktion Import: Improved reading of .trkedit file * Tracktion Import: Now read stretch and pitch values for each clip * Vegas TXT Export: Now write stretch values for each clip from supported formats (eg ALS, Audition XML, PTF, RPP, Sam EDL, SAW, Sesx, Tracktion, Vegas XML, VIP) * Vegas TXT Import: Now read stretch values for each clip * Vegas XML Export: Now write stretch values for each clip from supported formats (eg ALS, Audition XML, PTF, RPP, Sam EDL, SAW, Sesx, Tracktion, Vegas TXT, VIP) * Vegas XML Import: Now read stretch values for each clip * VIP Import: Now read stretch and pitch values for each clip * Drag 'n' Drop implemented for importing files - drag a supported file onto the 'Import from' pane and AAT will change to that folder and select the file * Drag 'n' Drop implemented for changing folders - drag a folder onto the 'Location' pane and AAT will change to that folder * Fixed an issue reading 'ZOOM Handy Recorder H4n' BWF Wave files which caused AAT to go into an endless loop Version 5.5.0.15 * Nuendo/Cubase XML Import: Now display message if 'lanes' are detected * Nuendo/Cubase XML Import: Fixed error where incorrect clip locations were calculated in XMLs with tracks with a mixture of 'linear' & 'musical' settings * Nuendo/Cubase XML Import: Now correctly displays message if 'lanes' are detected * OMF Import: Now checks non wav & non aif files to see if they are in fact aif files and if so renames them to aif * PTF Export: Now checks to see if the audio position within the clip/region is less than zero and adjusts to zero * PTF Export: Now checks all fade values and adjusts if necessary to cater for PTs inability to have overlapping clips/regions * PTF Export: Audio with bit depth greater than 24 will be converted to session bit depth if 'Generate File Copies' selected * PTF Export: Fixed error writing clip positions greater than 16777216 samples causing PTF to crash * PTF Import: Fixed marker position problem for version 7.4.2 PTF files * PTF Import: PTX Mac sessions converted to PTF by PT not already opened in PT8 or PT9 go into endless loop ('Optimized Track') now fixed * PTF Import: Mac sessions with audio without suffix incorrectly identified as folder names * SAW Export: Fixed an issue with 'softedges' * SESX Import: Improved support for track mute * Vegas XML Export: Now write clip names * Vegas XML Import: Now read clip names * Updated documentation regarding how to deal with Cubase/Nuendo 'lanes/takes' Version 5.6 can be downloaded from www.thelonelyhearts.com.au/release/v56.html Regards Michael Rooney -- Brett W. McCoy -- http://www.brettwmccoy.com ------------------------------------------------------------------------ "In the rhythm of music a secret is hidden; If I were to divulge it, it would overturn the world." -- Jelaleddin Rumi

12 years

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Linux-audio-user March 2013