Linux-audio-user February 2013

linux-audio-user@lists.linuxaudio.org

142 participants
178 discussions

by david

On 02/09/2013 04:59 AM, David L. Craig wrote: > On 13Feb08:1918-1000, david wrote: > >> On 02/08/2013 05:10 AM, David L. Craig wrote: >>> On 13Feb08:0755-0600, Stephen Stubbs wrote: >>> >>>> On 2/8/2013 1:43 AM, david wrote: >>>>> http://visual.ly/psychology-music?utm_source=visually_embed >>>>> >>>> So now we have quantitative proof that the Ancient Greeks' views on >>>> music were correct. >>>> >>>> Music is not an art but a science, with well defined laws that >>>> enable the musician to induce specific effects and emotions in the >>>> listener. >>> >>> So explain how Western peoples feel sad in minor keys >>> while Middle Eastern peoples do not, just to mention >>> one non-universal emotional reaction. >> >> I don't think emotional reactions are as directly connected with >> usage of specific brain centers. As the success of cognitive therapy >> for some problems, emotional reactions are learned. Cultures help >> teach that, too. > > So then you admit your scientific laws do not enable the > musician to induce specific effects and emotions in the > listener. I think you're confusing me with some other poster. The "Music is not an art but a science" comment above is from some one else. -- David gnome(a)hawaii.rr.com authenticity, honesty, community http://clanjones.org/david/ http://dancing-treefrog.deviantart.com/

11 years, 9 months

[ANN] Virtual MIDI Piano Keyboard (VMPK) 0.5.1 has been 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 for v0.5.1: * Fixed bug #3599827. No default keyboard shortcuts available in 0.5.0 on fresh installations * Qt5 build compatibility (but not fully functional) Requirements for all platforms: CMake-2.8 and Qt-4.8 or later. Please use the mailing list <vmpk-devel(a)lists.sourceforge.net> for questions and comments. Thanks. Copyright (C) 2008-2013, Pedro López-Cabanillas and others License: GPL v3 More info http://vmpk.sourceforge.net Downloads http://sourceforge.net/projects/vmpk/files/vmpk/0.5.1/ Regards, Pedro

11 years, 9 months

jackdbus eating 100% cpu after a while

by Florian Paul Schmidt

Hi, I was a long term jackd1 user and my first action on a new linux installation (mostly using Ubuntu) was normally to remove pulseaudio as it was badly configured and/or buggy. Things have changed and I really started to like PA for everyday stuff. And then jackdbus came along which together with the device reservation API and the jackd sinks promised to make using these two things together more easy. This mostly works fine, except for the device reservation bug in PA which is easy to work around though: - Make sure no audio process is actively using the soundcard you want jackd to use - Run pulseaudio -k - Run jack_control start I have noticed some issues with jackdbus though: a] jack_control start sometimes doesn't work at all after the first time it failed to aquire the device. A killall -9 jackdbus is in order to restore it b] after some hours of operation jackdbus starts to eat 100% cpu on two of my four cores. Are these known issues? I use Ubuntu 12.10 and jackd: fps@mango 12:08:21 .../Games/Xonotic/ $ jackd -v jackdmp 1.9.9 [...] How to diagnose the 100% cpu thing more closely? The ~.log/jack/jackdbus.log shows nothing suspicious. Thanks and regards, Flo -- Florian Paul Schmidt http://fps.io

11 years, 9 months

Re: [LAU] jackdbus eating 100% cpu after a while

by Len Ovens

On Sat, February 9, 2013 1:48 am, Florian Paul Schmidt wrote: > Hi, > > I was a long term jackd1 user and my first action on a new linux > installation (mostly using Ubuntu) was normally to remove pulseaudio as > it was badly configured and/or buggy. Things have changed and I really > started to like PA for everyday stuff. And then jackdbus came along > which together with the device reservation API and the jackd sinks > promised to make using these two things together more easy. This mostly > works fine, except for the device reservation bug in PA which is easy to > work around though: > > - Make sure no audio process is actively using the soundcard you want > jackd to use > - Run pulseaudio -k > - Run jack_control start There is a real fix in the pipe line... not sure when it will get into releases. I find: pasuspender --sleep 5 & ; jack_control start Will allow me to start jackdbus even while pulse is streaming. Actually I use pasuspender from qjackctl to do the same thing. > I have noticed some issues with jackdbus though: > > a] jack_control start sometimes doesn't work at all after the first time > it failed to aquire the device. A killall -9 jackdbus is in order to > restore it jack_control exit works for me. This is part of the bug above, when jackdbus fails to get the device, the jackd part dies but the dbus part doesn't (it seems, I don't know the code well enough) It would be interesting to compare this behaviour with jackd2. > b] after some hours of operation jackdbus starts to eat 100% cpu on two > of my four cores. I have left jackdbus running for at least 5 days and have not seen this show up. PA has been used during that time (audacious and fire fox) as well as other jack clients. I would be interested to know if running jackd instead of jackdbus is the same or different. There are some patches on the way for jack2 in ubuntu as well. (in testing) > > Are these known issues? I use Ubuntu 12.10 and jackd: > > fps@mango 12:08:21 .../Games/Xonotic/ $ jackd -v > jackdmp 1.9.9 > [...] I am using the alpha 13.04 on this machine and 12.04 on another. joe@studio1304:~$ jackd -v jackdmp 1.9.9.4 The plan is that once the jackd patches are tested they will be SRU to 12.04 and 12.10. -- Len Ovens www.OvenWerks.net

11 years, 9 months

OSC howto

by Patrick Shirkey

Hi, Can someone point me to a very simple and obvious HOWTO on making OSC work with Linux Apps? -- Patrick Shirkey Boost Hardware Ltd

11 years, 9 months

and now, what do you think RULES about Linux audio ?

by cunnilinux himself

subj. just interested about your POSITIVE motivation (if any). i'm intended to write about mine own a bit later... ;)

11 years, 9 months

USB-MIDI

by Folderol

Does anyone have any experience of using a MIDI-over-USB dumb keyboard? Does it need special drivers or can I just plug it in and have it automatically found by my machine? I'm hoping to be able to use Yoshimi on my netbook at an impromptu gig. I'm running a cut-down debian, but will get qjackctl from the repository (which usually fetches and configures everything else I need. -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song.

11 years, 9 months

Tracking at 44.1 vs. 48k vs 96k?

by James Stone

Are there any advantages to using 96k (or 48k?) if the final target is 44.1k/16bit? I am thinking that tracking at 44.1k / 24 bit should be more than sufficient for most (non-pro) purposes? I read somewhere about higher bitrate being important for headroom for audio processing plugins, but does samplerate also have an effect on this? James

11 years, 9 months

a prelude and fugue in F Major

by Dave Phillips

Greetings: From the vaults : https://soundcloud.com/davephillips69/prelude-and-fugue-in-fmaj Ruhig und zart. For the cloudless : http://linux-sound.org/audio/prelude_and_fugue_in_Fmaj.mp3 http://linux-sound.org/audio/prelude_and_fugue_in_Fmaj.ogg From a set of counterpoint exercises written in 1992. Originally intended for a pipe organ patch on the Yamaha TX802, here realized with the same patch rendered by Sean Bolton's Hexter FM modeling synth, with reverb from the very nice CALF reverb plugin. Btw, it wants speakers or phones with good bass response. Best, dp

11 years, 9 months

[ANN] Vee One Suite 0.3.1 - One second bug-fix release

by Rui Nuno Capela

hello there, a new batch of the Vee One Suite of old-school software instruments, primarily slated for Linux, featuring synthv1 [1], a polyphonic synthesizer, samplv1 [2], a polyphonic sampler and drumkv1 [3], a drum-kit sampler, are on the loose now. as previously, they come in a couple of expressions, such as: - a pure stand-alone JACK client with JACK-session and both JACK MIDI and ALSA MIDI input support; - a LV2 instrument plugin. interesting changes for this bug-fix release are: - improved filters parameter sensitivity (cutoff, reso). - envelope generators stage curves now gone a little more old-schooler and analog-like, hopefully improving on the punchy and click-less sound front. - experimental LV2 Time designated port support (Delay BPM). - preparations for Qt5 migration. - sample loop points were missing the LV2 UI state restoration. (samplv1) all are free, open-source Linux Audio software, distributed under the terms of the GNU General Public License (GPL) version 2 or later. enjoy the Carnival! [1] synthv1 - an old-school polyphonic synthesizer synthv1 is an old-school all-digital 4-oscillator subtractive polyphonic synthesizer with stereo fx. LV2 URI: http://synthv1.sourceforge.net/lv2 website: http://synthv1.sourceforge.net downloads: http://sourceforge.net/projects/synthv1/files - source tarball: http://download.sourceforge.net/synthv1/synthv1-0.3.1.tar.gz - source package: http://download.sourceforge.net/synthv1/synthv1-0.3.1-8.rncbc.suse122.src.r… - binary packages: http://download.sourceforge.net/synthv1/synthv1-0.3.1-8.rncbc.suse122.i586.… http://download.sourceforge.net/synthv1/synthv1-0.3.1-8.rncbc.suse122.x86_8… [2] samplv1 - an old-school polyphonic sampler samplv1 is an(other) old-school all-digital polyphonic sampler synthesizer with stereo fx. LV2 URI: http://samplv1.sourceforge.net/lv2 website: http://samplv1.sourceforge.net downloads: http://sourceforge.net/projects/samplv1/files - source tarball: http://download.sourceforge.net/samplv1/samplv1-0.3.1.tar.gz - source package: http://download.sourceforge.net/samplv1/samplv1-0.3.1-8.rncbc.suse122.src.r… - binary packages: http://download.sourceforge.net/samplv1/samplv1-0.3.1-8.rncbc.suse122.i586.… http://download.sourceforge.net/samplv1/samplv1-0.2.1-8.rncbc.suse122.x86_8… [3] drumkv1 - an old-school drum-kit sampler. drumkv1 is (yet) an(other) s an old-school all-digital drum-kit sampler synthesizer with stereo fx. LV2 URI: http://drumkv1.sourceforge.net/lv2 website: http://drumkv1.sourceforge.net downloads: http://sourceforge.net/projects/drumkv1/files - source tarball: http://download.sourceforge.net/drumkv1/drumkv1-0.3.1.tar.gz - source package: http://download.sourceforge.net/drumkv1/drumkv1-0.3.1-4.rncbc.suse122.src.r… - binary packages: http://download.sourceforge.net/drumkv1/drumkv1-0.3.1-4.rncbc.suse122.i586.… http://download.sourceforge.net/drumkv1/drumkv1-0.3.1-4.rncbc.suse122.x86_8… see also: http://www.rncbc.org/drupal/node/615 cheers! -- rncbc aka Rui Nuno Capela rncbc(a)rncbc.org

11 years, 9 months

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Linux-audio-user February 2013