Linux-audio-user September 2015

linux-audio-user@lists.linuxaudio.org

54 participants
51 discussions

Music made with Linux: c2015-15

by jonetsu＠teksavvy.com

Here's one I made recently as a very first attempt in trying to mix down all tracks in a cohesive manner. All comments welcomed, technical and even on the tune itself ! https://soundcloud.com/nominal6/c2015-15 Cheers.

8 years, 11 months

Super-threaded tree processing with GSequencer v0.6.8

by Joël Krähemann

Hi, After a few refactorings its finally here. Super-threaded audio tree computing for GSequencer v0.6.8 http://gsequencer.org/download.html The config file located in $(HOME)/.gsequencer/ags.conf should look like following: [generic] builtin-theme=false autosave-thread=false segmentation=4/4 [thread] model=super-threaded super-threaded-scope=channel lock-global=ags-thread lock-parent=ags-recycling-thread [device] samplerate=44100 buffer-size=940 pcm-channels=2 dsp-channels=2 alsa-handle=hw:0,0 [recall] auto-sense=true cheers, Joël

8 years, 11 months

[OT] Coursera: Audio Signal Processing for Music Applications

by Dave Phillips

Saw this announced on the Linux Musicians site, thought it may be of interest to some folks here. (Sorry if it's a repost). https://www.coursera.org/course/audio Instructors are professors Xavier Serra and Julius O. Smith III, two very well-known DSP worthies. Course syllabus : Week 1: Introduction; basic mathematics Week 2: Discrete Fourier transform Week 3: Fourier transform properties Week 4: Short-time Fourier transform Week 5: Sinusoidal model Week 6: Harmonic model Week 7: Sinusoidal plus residual modeling Week 8: Sound transformations Week 9: Sound/music description Week 10: Concluding topics; beyond audio signal processing Best, dp

8 years, 11 months

New Yoshimi Release :)

by Will Godfrey

We are pleased to announce the release of Yoshimi V1.3.6 Principal features for this release are the introduction of controls from the command line, covering many setup options, as well as extensive root/bank/instrument management. Some of these new controls are also available to MIDI via new NRPNs. Vector control has been extended so that there are four independent 'features' that each axis can control, ALSA audio has had a makeover, and will now work at your sound card's best bit depth - not just 16 bit (as it used to be). In the 'examples' directory there is a complete song set, 'OutThere.mid' and 'OutThere.xmz'. Together these produce a fairly complex 12 part tune that makes Yoshimi work quite hard. More information on these and other features are in the 'doc' directory. Yoshimi source code can be obtained either from: http://sourceforge.net/projects/yoshimi or: https://github.com/Yoshimi/yoshimi Our mailing list is now: http://www.freelists.org/list/yoshimi -- 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.

8 years, 11 months

Komplete Audio 6 + USB3

by Nicola Pandini

Hi list! I'm about to purchase a laptop with usb3 only ports (no usb2). I want to use it for live performances, with a full RT-preemt kernel. Has someone already test NI Komplete Audio 6 with USB3? Are there known issues? Thanks! Nicola

8 years, 11 months

How to run jack at 8kHz sr?

by Alessio Degani

Hi list, I'm writing some signal processing algorithm for real time processing that has to run on a 8 kHz sampling frequency embedded device. My code is in C and I wrote a simple jack client for testing my algorithms. For now, I'm using a sample frequency of 44.1 kHz but I want to test the behaviour of my code at 8 kHz. With my sound card, is impossible to set jack to run at 8 kHz. It is possible in some way, to fake the 8 kHz sampling frequency (for example using plugins?). I've seen the Steve Harris Decimator, but it is not designed to run in real time. I've tried to put in jack-rack a low-pass (antialias) filter followed by the SH Decimator, but the result is (as expected) a 44.1 kHz signal with reduced bandwith and some "aliasing" (I don't think that what I get is alias -by definition- but some other artifacts). What can I do to test my algorithm at 8 kHz in realtime using jack? Thank you all :) -- a.

8 years, 11 months

Problems with Lenovo X61

by worik

I have a Lenovo X61 I bought second hand hoping to use it for some audio work. But when using a USB output device (a MobilePRE M-Audio through jackd) the volume is very low. Too low to drive my amplifiers or even my headphones. In exactly the same system I use an Acer laptop with no problems at all. I cannot find any mixer controls that help. Does anyone out there have a similar problem and know if it can be solved? Where I should start? cheers Worik -- Why is the legal status of chardonnay different to that of cannabis? root(a)worik.org 021-1680650, (03) 4821804 Aotearoa (New Zealand) I voted for love

8 years, 11 months

[ANN] Summer'15 release frenzy wrap up!

by Rui Nuno Capela

Hello? Summer'15 release frenzy is not over yet!... well, it's only over on the 'equinox' anyway... * QmidiNet - A MIDI Network Gateway via UDP/IP Multicast * QmidiNet [1] 0.3.0 has been released! QmidiNet [1] is a MIDI network gateway application that sends and receives MIDI data (ALSA-MIDI and JACK-MIDI) over the network, using UDP/IP multicast. Inspired by multimidicast [4] and designed to be compatible with ipMIDI [5] for Windows. Website: http://qmidinet.sourceforge.net Project page: http://sourceforge.net/projects/qmidinet Downloads: http://sourceforge.net/projects/qmidinet/files - source tarball: http://download.sourceforge.net/qmidinet/qmidinet-0.3.0.tar.gz - source package: http://download.sourceforge.net/qmidinet/qmidinet-0.3.0-8.rncbc.suse132.src… - binary packages: http://download.sourceforge.net/qmidinet/qmidinet-0.3.0-8.rncbc.suse132.i58… http://download.sourceforge.net/qmidinet/qmidinet-0.3.0-8.rncbc.suse132.x86… Change-log: - System tray icon now blinks on network send/receive activity. - Prefer Qt5 over Qt4 by default with configure script. - Complete rewrite of Qt4 vs. Qt5 configure builds. - Fixed for some strict tests for Qt4 vs. Qt5 configure builds. * QmidiCtl - A MIDI Remote Controller via UDP/IP Multicast * QmidiCtl [2] 0.3.0 has been released! QmidiCtl [2] is a MIDI remote controller application that sends MIDI data over the network, using UDP/IP multicast. Inspired by multimidicast [4] and designed to be compatible with ipMIDI [5] for Windows. QmidiCtl [2] has been primarily designed for the Maemo [6] enabled handheld devices, namely the Nokia N900 [7] and also being promoted to the Maemo Package [8] repositories. Nevertheless, QmidiCtl may still be found effective as a regular desktop application as well. Website: http://qmidictl.sourceforge.net Project page: http://sourceforge.net/projects/qmidictl Downloads: http://sourceforge.net/projects/qmidictl/files - source tarball: http://download.sourceforge.net/qmidictl/qmidictl-0.3.0.tar.gz - source package: http://download.sourceforge.net/qmidictl/qmidictl-0.3.0-7.rncbc.suse132.src… - binary packages: http://download.sourceforge.net/qmidictl/qmidictl-0.3.0-7.rncbc.suse132.i58… http://download.sourceforge.net/qmidictl/qmidictl-0.3.0-7.rncbc.suse132.x86… Change-log: - Prefer Qt5 over Qt4 by default with configure script. - Complete rewrite of Qt4 vs. Qt5 configure builds. - Fixed for some strict tests for Qt4 vs. Qt5 configure builds. * QXGEdit - A Qt XG Editor * QXGEdit [3] 0.3.0 has been released! QXGEdit [3] is a live XG instrument editor, specialized on editing MIDI System Exclusive files (.syx) for the Yamaha DB50XG [9] and thus probably a baseline for many other XG devices. Website: http://qxgedit.sourceforge.net Project page: http://sourceforge.net/projects/qxgedit Downloads: http://sourceforge.net/projects/qxgedit/files - source tarball: http://download.sourceforge.net/qxgedit/qxgedit-0.3.0.tar.gz - source package: http://download.sourceforge.net/qxgedit/qxgedit-0.3.0-6.rncbc.suse132.src.r… - binary packages: http://download.sourceforge.net/qxgedit/qxgedit-0.3.0-6.rncbc.suse132.i586.… http://download.sourceforge.net/qxgedit/qxgedit-0.3.0-6.rncbc.suse132.x86_6… Change-log: - Single/unique application instance control adapted to Qt5/X11. - Prefer Qt5 over Qt4 by default with configure script. - Complete rewrite of Qt4 vs. Qt5 configure builds. - A new top-level widget window geometry state save and restore sub-routine is now in effect. - Added "Keywords" to desktop file; fix passing debian flags on configure (patches by Jaromír Mikeš, thanks). - Fixed for some strict tests for Qt4 vs. Qt5 configure builds. - Added application description as freedesktop.org's AppData. License: QmidiNet [1], QmidiCtl [2] and QXGEdit [3] are free, open-source Linux Audio [10] software, distributed under the terms of the GNU General Public License (GPL) version 2 or later [11]. See also: http://www.rncbc.org/drupal/node/950 References: [1] QmidiNet, a MIDI Network Gateway via UDP/IP Multicast http://qmidinet.sourceforge.net [2] QmidiCtl, a MIDI Remote Controller via UDP/IP Multicast http://qmidictl.sourceforge.net [3] QXGEdit, a Qt XG Editor http://qmidictl.sourceforge.net [4] multimidicast, ends and receives MIDI from Alsa sequencers over your network http://llg.cubic.org/tools/multimidicast [5] ipMIDI, MIDI over Ethernet ports - send MIDI over your LAN http://nerds.de [6] Maemo Community http://www.maemo.org [7] Nokia N900, the first Maemo device which may also be used as a phone http://wiki.maemo.org/Nokia_N900 [8] Maemo package overview for QmidiCtl http://maemo.org/packages/view/qmidictl/ [9] Yamaha DB50XG, PC Soundcard Daughter Board http://www.soundonsound.com/sos/1996_articles/may96/yamahadb50xg.html [10] Linux Audio consortium of libre software for audio-related work http://linuxaudio.org [11] GNU General Public License (GPL) http://www.gnu.org/copyleft/gpl.html Have (lots of) fun, always! -- rncbc aka. Rui Nuno Capela

8 years, 11 months

Discovering file format

by Will Godfrey

I have about 150 uncompressed audio files that I want to properly categorise, relatively quickly. The very oldest were recorded as 16bit 44.1k, more recent ones were 16bit, 48k and the latest ones 24bit 48k. I've moved them all into the same directory, so is there a simple script I can run that will scan this and list the name and details of each file? I can find plenty of programs that can change the format, but can't find any that will just tell me what it is :( -- 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.

8 years, 11 months

mcpdisp-0.0.4 is released (fwd)

by Len Ovens

To: linux-audio-announce(a)lists.linuxaudio.org Subject: mcpdisp-0.0.4 is released The Mackie Control Protocol display emulator has a new release. http://www.ovenwerks.net/software/mcpdisp.html The code has be redone in c++ so that I could take it out of the terminal age into the GUI age. If you are using a BCF2000 or two this will add the Mackie scribble strips and channel LED indicators to your setup. Source can be downloaded from: https://github.com/ovenwerks/mcpdisp/archive/mcpdisp-0.0.4.tar.gz or the latest can be cloned from: git clone https://github.com/ovenwerks/mcpdisp.git -- Len Ovens www.ovenwerks.net

8 years, 11 months

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Linux-audio-user September 2015