Linux-audio-user October 2010

linux-audio-user@lists.linuxaudio.org

116 participants
93 discussions

by Robert Jonsson

Hi friends, Just wanted to share this amazing video of a c64 doing realtime effects that has been passing through the interweb today. The effects are quite spectacular for a machine that old and limited but I think perhaps the most amazing thing is that they managed to compress 2 minutes worth of Tom's Diner into 26kb of data, if I read the the white paper correctly. A video demonstration here: http://www.youtube.com/watch?v=MDrqBYkco-Y A white paper here: http://www.livet.se/mahoney/c64-files/Cubase64_White_Paper_by_Pex_Mahoney_T… Have only skimmed it yet but looks very interesting. Ofcourse there is always the chance this is a hoax but I sure hope not :) Regards, Robert

15 years, 3 months

[LAU] Jack+Firewire default output

by Oleg Ivanenko

Hi, all! I have m-audio firewire solo, jackdmp 1.9.6 and libffado 2.0.1. Soundcard have 2 output pairs in jack. dev0_LineOut L_out dev0_LineOut R_out dev0_SpdifOut L_out dev0_SpdifOut R_out Recently, all jack compatible software was plugged to LineOut by default, but since last firewire and jackd updates the default output became SpdifOut. How can I change default output in my case? -- Truly yours, Oleg Ivanenko aka Ash [if it wasn't so sad, it would be funny]

15 years, 3 months

[LAU] Recording 96/24 via USB

by Erik Sutterud

This may be old news, but today I successfully recorded a beautiful stereo recording via USB, using the Digigram UAX220 interface. The unit is truly professional and shows up instantly in Audacity I have on Ubuntu Lucid (10.04). My laptop is a ThinkPad Z61m 2GHz, 1GB ram. Bu the way, the UAX220 turned as instantly up in Mac OS on an iMac... Erik Sutterud

15 years, 3 months

[LAU] Yoshimi

by fons＠kokkinizita.net

Hello all, Installed Yoshimi Black Belt Edition 0.061-pre7 today. Compilation and installation went fine, but loading any instrument produces either a segfault or something similar to: *** glibc detected *** yoshimibb: malloc(): memory corruption: 0x08e1bae0 *** ======= Backtrace: ========= /lib/libc.so.6(+0x6c7b1)[0xb70147b1] /lib/libc.so.6(+0x6e866)[0xb7016866] /lib/libc.so.6(__libc_malloc+0x63)[0xb7018d03] /usr/lib/libstdc++.so.6(_Znwj+0x29)[0xb71bf4b9] yoshimibb(_ZN16ADnoteParameters11EnableVoiceEi+0x48)[0x8133f28] ======= Memory map: ======== 08048000-081b7000 r-xp 00000000 08:02 753823 /usr/local/bin/yoshimibb etc. Any hints ? TIA, -- FA There are three of them, and Alleline.

15 years, 3 months

[LAU] Generic ipod: ogg vorbis tag name weirdness

by M Watts

My imitation ipod plays oggs. They all seemed to be tagged correctly, but some always showed up as Unknown Artist etc. Couldn't figure it out till I looked at the tags with vorbiscomment. THe only difference was that the 'Unknown' files had tagnames in lower case, like title=badum-badum. Known files had TITLE=etc. Here's a short script to fix this up, and add discnumber tag for good measure (which my player seem to need) #! /bin/bash # capitalise tag names on today's ogg files # add discnumber tag if not already there for ogg in $(find . -mtime -1 -name '*.ogg'); do vorbiscomment -l $ogg | sed 's/.*=/\U&/g' > "$1{1%%.ogg}.tag" if [ `grep -c DISCNUMBER $1{1%%.ogg}.tag` -eq 0 ] then echo "DISCNUMBER=1" >> "$1{1%%.ogg}.tag" fi vorbiscomment -w -c "$1{1%%.ogg}.tag" $ogg rm -f "$1{1%%.ogg}.tag" done The discnumber tag could be added with vorbiscomment's -a flag, but oh well... I got the temporary file bit from some guy on the Arch forums, so thanks whoever you are.

15 years, 3 months

Re: [LAU] No batch processing on Linux?

by Marc Groenewegen

On Fri, Sep 24, 2010 at 3:05 PM, Robin Gareus <robin@xxxxxxxxxx> wrote: > ..and in case there are files with whitespaces in the filename, change > the default string separator: > > #/bin/bash > IFS=: > # do stuff > unset IFS Or remove spaces from all filenames. Why would one want spaces in filenames anyway ? To me it feels a bit like putting spaces in variable names, which isn't a good idea either. Cheers, Marc #! /bin/bash # # spaces2underscores.sh echo echo "This command changes all spaces in file names into underscores" echo " for ALL FILES IN THIS DIRECTORY !" echo " Type ENTER to continue or ^C to quit" read dummy for f in *; do oldname=`echo $f |sed 's/ /~/g'` newname=`echo $f |sed 's/ /_/g'` if [ $oldname != $newname ] then echo mv $f $newname mv "$f" $newname fi done

15 years, 3 months

[LAU] Cassio Cheap Keyboard

by yermandu

Hail Everbody Im looking for some cheap keyboard musical with usb, and i found the Casio LK 220 KT in my city. More info http://www.casio.com/products/archive/Musical_Instruments/Lighted_Keys/LK-2… My objetive is work Keyboard + Jack Connection Kit, using synth soft like Zynaddsubfx, Bristol and Wsynth. For this ambicious idea i think in Casio (there are many shops selling cheap this manufacturer in my country ) My doubt: Is Casio LK 220 supported by Linux, will work ? I dont wanna waste my money and not run in Linux :( So, If someone enlighten me, I would be very grateful. Regards -- yermandu [at] gmal dot com

15 years, 3 months

[LAU] [ANN] Qtractor 0.4.7 - The Furious Desertrix is out!

by Rui Nuno Capela

It's TYOQA (The Year Of Qtractor Automation:) what else? But wait, there's three months to go yet. Meanwhile, the foundations have already been laid and one can now tell that a rocky milestone is ready to get bumped. Ouch! Qtractor 0.4.7 (furious desertrix) is out! Release highlights: - MIDI learn/controller mapping for all plugin parameters (NEW) - Extended Clip fade-in/out WYSIWYG curves (NEW) - MIDI resolution overflow (FIX) - MIDI tempo standard base on quarter-note (FIX) - Extended MIDI controller mapping for mixer/tracks (NEW) - Audio metronome gain control (NEW) - Mute/solo tracks while looping (FIX) - MIDI Clock support (NEW) - Audio clip import while looping (FIX) - MIDI track bank-select/program-change transparency (FIX) - VeSTige headers included for native VST plugin support (NEW) - JACK transport sync support (FIX) - Clip tempo-adjust tool (NEW) - Audio tracks auto-monitoring (FIX) - Transport back/forward stops on loop points (NEW) - MIDI tracks redundant mute/solo (FIX) See also: http://www.rncbc.org/drupal/node/235 Website: http://qtractor.sourceforge.net Project page: http://sourceforge.net/projects/qtractor Downloads: - source tarball: http://downloads.sourceforge.net/qtractor/qtractor-0.4.7.tar.gz - source package (openSUSE 11.3): http://downloads.sourceforge.net/qtractor/qtractor-0.4.7-1.rncbc.suse113.sr… - binary packages (openSUSE 11.3): http://downloads.sourceforge.net/qtractor/qtractor-0.4.7-1.rncbc.suse113.i5… http://downloads.sourceforge.net/qtractor/qtractor-0.4.7-1.rncbc.suse113.x8… - user manual (nevermind outdated): 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: - While moving multi-selected MIDI events around the clip editor (aka piano-roll), with help of keyboard arrow keys, that is, was not clear which one was the so-called "anchor" event, the one which positioning gets honored for snap-to-beat business. Not anymore: the anchor event now defaults to the earliest in time or the one the user's last point(-click)ed. - MIDI control observer pattern implementation has sneaked in, making it ready for the so-called and long-awaited "MIDI Learn" feature and arbitrary MIDI controller assignment, for plugin parameters in particular. - MMC DEFERRED PLAY doesn't cause transport state to stop if currently rolling (mitigating bug #3067264). - Audio clip merge processing might have been skipping a few initial frame blocks, now fixed. - Clip selection and plugin parameter hash optimization. - Anti-glitch audio clip macro fade-in/out fixed again. - New clip fade-in/out slopes (curves) are introduced, partially adapted and refactored from those easing equations of Robert Penner's fame. - Clip fade-in/out non-linear slopes are now shown as actual WYSIWYG curves. - Escape key now closes generic plugin widgets as ever found usual elsewhere. - Picking nits: unselect current track when clicking on any gray empty area, also accessible from a new menu item: Track/Navigate/None. - A nasty and deadly MIDI resolution overflow has been finally fixed, allowing for long MIDI sequences (1h+) to load correctly on 32bit machines from now on (was perfectly fine on 64bit though). - MIDI editor selection hash optimization in face of reasonably huge event sequences. - MIDI controller mapping finally refactored to support some other MIDI event types than just CC (0xBn) ones. - Nitpicking fix: corrected main track-list (left pane) display when no track is currently selected. - libX11 is now being added explicitly to the build link phase, as seen necessary on some bleeding-edge distros eg. Fedora 13, Debian 6. (fixing bug #3050944). - New audio metronome bar and beat sample gain options. - Progressively, the observer pattern is being finally introduced, targeting all potentially automation controls and widgets as plain ground-zero for the (ultra-)long overdue automation feature. - MIDI controller mapping of still non-existing tracks were being implicitly assigned to the last, highly numbered, existing track. Now fixed. - Moving from old deprecated Qt3'ish custom event post handling into regular asynchronous signal/slot strategy. - Muting/soloing tracks while playback is looping was leaving current audio clip out-of-sync whenever that same track is later un-muted on any other preceding clip. Now hopefully fixed. - MIDI Clock support makes its first appearance. - All tempo (BPM) calculations are now compliant to the MIDI conventional equivalence between beat and quarter note (1/4, crotchet) as common standard time division. - Automatic audio time-stretch option is not enabled by default anymore. - Standard warning Apply button is now only shown when dismissing dialog changes are actually valid. - Make sure non-dedicated metronome and player buses are properly reset and reopen when changing regular audio buses (hopefully fixing bug item #3021645 - Crash after changing audio bus). - Hopefully, an outrageously old bug got squashed away, which was causing random impromptu crashes, most often when importing audio clips while looping and play-head is any near the loop end point. - General standard dialog buttons layout is now in place. - Fixed main track view off-limits play-head positioning. - Main tool-bar Time and Tempo spin-boxes, may now have their colors correct, as for most non-Qt based theme engines (ie. Gnome). Green text on black background has been and still is the the intended aspect design ;) - MIDI file import and internal sequence representation has been changed to be inclusive on all bank-select (CC#0,32) and program-change events which were previously discarded while honoring MIDI track properties. Interleaved SysEx events are now also preserved on their original sequence positions instead of squashing a duplicate into the MIDI bus SysEx setup. - Attempt to include the VeSTige header by default, as for minimal VST plugin support. - JACK transport support has been slightly rewritten, in fact the sync callback is now in effect for repositioning. - The MIDI clip editor (piano roll) widget won't be flagged as a tool window anymore. - A tempo adjustment tool is making inroads from the menu, as Edit/Clip/Tempo... (factory shortcut: F7). - Audio tracks auto-monitoring is now effective on playback. - Make sure to ask whether a dirty MIDI clip should be saved, upon resizing or stretching its edges (fixes bug #3017723). - Backward and Forward transport commands are now taking additional stops on loop points. - Attempt to optimize track solo/mute redundant transactions, in special regard to MIDI track events which were being duplicated on soloing and temporarily muted on unsoloing. Cheers && Enjoy (be happy!) -- rncbc aka Rui Nuno capela rncbc(a)rncbc.org

15 years, 3 months

[LAU] [ANN] MusE 1.1

by Robert Jonsson

Friends, MusE 1.1 is here! [Introduction] MusE is a combined midi and audio sequencer which tries to cover most bases for the linux computer studio. MusE is one of the oldest sequencers on the Linux audio scene and is today a very stable open source solution for everyday music making. This release adds some new features, lots of bugfixes and a bunch of usability improvements. MusE : http://muse-sequencer.org [Highlights] * Jack midi support. * Allow native VST guis for plugins * Audio and midi routing popup menus now stay open, for making rapid connections. * MusE now has two mixers, with selectable track type display. * External midi sync fixes and improvements, should be very stable * Some pianoroll improvements * Some crash fixes * Drum editor fixes * Various arranger fixes and improvements * Various improvements for plugin guis * Routing fixes * Stability fixes for plugins * Various DSSI fixes * Rec enabled track moves with selection when only one track is rec enabled * Jack midi, routing system, multichannel synth ins/outs, midi strips and trackinfo pane. * Dummy audio driver: Added global settings for sample rate and period size. * Arranger track list: Quick 'right-click' or 'ctrl-click' or 'ctrl-mouse-wheel' toggling of Track On/Off. * Allow changing timebase master * Option to split imported midi tracks into multiple parts. * Several new keyboard shortcuts for various operations, see shortcut editor * Several colour tweaks and other cosmetic changes * Various stability fixes * Countless fixes and tweaks, about a 300 lines in the Changelog, check it for a complete list of blood sweat and tears [What is MusE again?] MusE is multitrack virtual studio with support for: * Midi * jack midi * internal softsynths, including soundfont player FluidSynth and sample player Simple Drums * DSSI softsynths, including VST instruments * with a patch to DSSI, VST-chunks are handled * Drum editor * Pianoroll * Conventional arranger * midi automation * and lots more * Audio * Jack * Jack transport * LADSPA plugins * VST plugins through dssi-vst * audio automation, old sch00l * and lots more [ChangeLog] For a complete list of changes, check the ChangeLog in the package or online at the sourceforge site: http://lmuse.svn.sourceforge.net/viewvc/lmuse/trunk/muse/ChangeLog?revision… [Download] http://muse-sequencer.org/index.php/Download Keep on rocking! The MusE team

15 years, 3 months

[LAU] [ANN] Virtual MIDI Piano Keyboard 0.3.3 released

by Pedro Lopez-Cabanillas

Virtual MIDI Piano Keyboard is a MIDI events generator and receiver. It doesn't produce any sound by itself, but can be used to drive a MIDI synthesizer (either hardware or software, internal or external). You can use the computer's keyboard to play MIDI notes, and also the mouse. You can use the Virtual MIDI Piano Keyboard to display the played MIDI notes from another instrument or MIDI file player. Changes * Option to represent MIDI velocity as highlight color tint * Tool shortcuts, with a shortcuts editor dialog borrowed from Qtractor * Language menu, allowing to select and change languages on the fly * New "About Translation" dialog. Linux translation files moved to the program data directory * Fixed knobs and sliders tool-tip positions * Allow to trigger defined but hidden keys * Process incoming controller events: all sounds/notes off, and reset controllers. * Translations updated Copyright (C) 2008-2010, Pedro López-Cabanillas License: GPL v3 More info http://vmpk.sourceforge.net Downloads http://sourceforge.net/projects/vmpk/files Regards, Pedro

15 years, 3 months

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Linux-audio-user October 2010