Hi,
These last few days I found some time to work on ladspa.m.lv2, an LV2
plugin to load ladspa.m.proto instrument definition files:
https://github.com/fps/ladspa.m.lv2
It is in a somewhat usable state, i.e. used in ardour3 it loads the
example instrument generated by this python script:
https://github.com/fps/ladspa.m.proto/blob/master/example_instrument.py
which is a very simple polyphonic sawtooth synth with exponential
envelopes and an echo with differing delay times per voice. There's
still some things to do (e.g. expose control ports, implement
All-Notes-Off midi messages, lots of optimizations - right now I care
more for correctness than for efficiency, etc.) and I also have some
questions:
1] This one is regarding waf. I'm not used to writing wscript files and
I adapted the whole thing from the example sampler from the
LV2-distribution. I wonder how I can make waf to use e.g. -fPIC and
other compiler flags needed for my 64-bit system. Right now I have put a
little makefile into the repository which passes the missing options
along as CXXFLAGS environment variable. This is a dirty hack. So if
anyone waf guru might want to take a look, I'd be so ever grateful.
https://github.com/fps/ladspa.m.lv2/blob/master/makefilehttps://github.com/fps/ladspa.m.lv2/blob/master/wscript
2] I'm a little bit puzzled by how the patch_set messages together with
the LV2 worker extension works. If you take a look at this run() function
https://github.com/fps/ladspa.m.lv2/blob/master/instrument.cc#L702
you'll see that I have an extra LV2_ATOM_SEQUENCE_FOR_EACH at the start
of the function to process the patch_set messages. I tried to integrate
that into the loop later on (that iterates over the sample_count frames
and lets the midi events take effect at their respective frame), but
once I do that, patch loading stops to work. I must be missing something
fundamental. So if any LV2 guru might want to take a look, I'd be very
grateful, too
Thanks and have fun,
Flo
--
Florian Paul Schmidt
http://fps.io
Dear all,
at 10:00am (in about 10 minutes), the Linux Audio Conference 2013 is
about to start.
There is a live stream available, so you can follow the event, even if
you have not made it physically to Graz
http://lac.linuxaudio.org/2013/stream
Remote participants are invited to join #lac2013 on irc.freenode.net[1],
to be able to take part in the discussions, ask questions, and get
technical assistance in case of stream problems.
See you on the conference - here and everywhere
fgmdasr
IOhannes
[1] http://webchat.freenode.net/?channels=lac2013
Dear all,
There she is, Yoshimi 1.1.0! Looking better than ever, working better
than ever, capable of doing more than ever. Simply put, better than
ever. Made possible by the much appreciated and very valuable help,
contributions and feedback from the Linux Audio community.
http://downloads.sourceforge.net/yoshimi/yoshimi-1.1.0.tar.bz2
For this release I'd like to thank the following people in particular
but in no particular order:
* Kristian Amlie for making Yoshimi less CPU hungry.
* Andrew Deryabin for making Yoshimi a little more CPU hungry again, but
for a good reason, Yoshimi now has per part JACK outputs!
* Nikita Zlobin for having Yoshimi handle state files better.
* Florian Dupeyron for his custom best of My?terious bank.
* Will J. Godfrey for his continuous testing and monitoring of new
developments.
* Alessandro Preziosi for Yoshimi's lovely new knobs.
* David Adler for the AZERTY virtual keyboard support.
* Rob Couto for the helpful insights and general help.
* Alan Calvert.
Best regards,
Jeremy Jongepier
I'm preparing a seminar that will take place tomorrow (4 May),
it will involve live mixing of surround sound using Ardour.
While setting up the PC to be used, two problems occured.
The first one is solved, but its cause remains misterious.
A some point it appeared that the sound card (HDSP-MADI,
used every day since years) had decided to meet its creator.
Every program trying to access it - from jackd to aplay -L
not only blocked, but turned out to be impossible to kill.
Replaced the card - same result. It turned out to be a
corrupt /var/lib/alsa/asound.state. The systemd service
doing the 'alsactl restore' while booting choked on it,
blocked, and this apperently blocked all others trying
to use the card later. What I don't understand is how alsactl
exactly failed, and why these processes seemed to be immune
to a 'kill -9'.
The second one is an Ardour2 session that worked perfectly
on another similar PC, but becomes completely unresponsive
on the one to be used. It has four mono tracks and three
10-channel ones, and little else. DSP load is not the problem,
it's less than 15%. Things look like it's the graphics. When
Ardour's playhead reaches the right end of the editor window,
it takes something like 5 seconds for the editor display to
update - everything seems to freeze during that time but audio
is not interrupted. Same when trying to scroll or change the
zoom factor. Video card is Nvidia GeForce 7300, indeed quite
old, but the same PC does full-screen HD youtube videos without
problem. Video driver is nouveau as nv seems to be no longer
supported by Archlinux. I'm pretty sure this system didn't have
such problems when it was using nv. OTOH nouveau works very well
on other systems... I could try and install the proprietary
Nvidia driver, but with just some hours to go I'd rather not
take any risks...
Any hints ?
Ciao,
--
FA
A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)
Hello list,
libsndfile-info shows various useful information like the one at the end of this mail.
I have Sonatina Symphonic Orchestra waves here (violins 1) and a one note wave includes "Midi Note", "Loop Count" and "Cue Start : 92078 End : 223977", which is the actual loop start/end
Is this custom data or does it follow a standard?
And no matter what, how do I write that into my own wave files?
I would prefer command line tools. But programming interfaces are fine as well.
Greetings,
Nils
$ sndfile-info test.wav
Version : libsndfile-1.0.25
========================================
File : test.wav
Length : 896548
RIFF : 896540
WAVE
fmt : 16
Format : 0x1 => WAVE_FORMAT_PCM
Channels : 2
Sample Rate : 44100
Block Align : 4
Bit Width : 16
Bytes/sec : 176400
data : 895916
*** SAUR : 512 (unknown marker)
smpl : 60
Manufacturer : 0
Product : 0
Period : 22675 nsec
Midi Note : 76
Pitch Fract. : 0
SMPTE Format : 0
SMPTE Offset : 00:00:00 00
Loop Count : 1
Cue ID : 0 Type : 0 Start : 92078 End : 223977 Fraction : 0 Count : 0
Sampler Data : 0
End
----------------------------------------
Sample Rate : 44100
Frames : 223979
Channels : 2
Format : 0x00010002
Sections : 1
Seekable : TRUE
Duration : 00:00:05.079
Signal Max : 31468 (-0.35 dB)
INTERNATIONAL COMPUTER MUSIC CONFERENCE 2013
REGISTRATIONS NOW OPEN FOR ICMC 2013
Registrations are now open to attend the 2013 International Computer Music Conference. This year will see the conference held in Perth, capital city of Western Australia. Paper sessions, performances, installations, presentation of spatialised works will all take place within the Perth Cultural Centre, situated in the heart of the city’s cultural district, The Cultural Centre is only a short distance away from the natural beauty of King’s Park, the Swan River and some of Western Australia’s famous world class beaches.
Addressing the theme IDEA: International Developments in ElectroAcoustics, this year will feature keynote speakers Agostino Di Scipio (Italy), Haco (Japan), Warren Burt (Australia) and Alvin Curran (USA). The conference will open on Sunday the 11th of August and run until the 17th with a lunchtime conference banquet to be held on the final day.
Register soon to take advantage of early registration discounts.
The International Computer Music Conference (ICMC) has been the major international medium for the presentation of technical and musical research, both musical and theoretical, interrelated to the use of computers in music - since. ICMC travels the globe annually, and will be held in the southern hemisphere and Australia for the first time this year.
Please stay tuned to the ICMC2013 website as news, information and content is being added regularly. www.icmc2013.com.au
The conference will also run concurrently with Tura’s biennial Totally Huge New Music Festival, a ten day biennial festival which incorporates concerts, installations, master classes, young artists’ events and free outdoor concerts.
For more information visit the Tura New Music Website www.tura.com.au
Please direct all conference enquiries to: Andrew Varano conference(a)tura.com.au
ICMC 2013 is presented by Tura New Music, The International Computer Music Association, The Australasian Computer Music Association and Edith Cowan University and is supported by The Perth Convention Bureau, The Perth Institute of Contemporary Arts, The State Library of Western Australia, The Western Australian Museum and the Metropolitan Redevelopment Authority.
Hello LAD and LV2,
It's been a little while, but I've finally managed to put together
another LVTK release.
Major Additions
* LV2UI rev3 Supported
* Support LV2UI_Port_Map
* Support LV2UI Port Subscribe
* Support LV2UI Touch
* Support LV2UI Peak Data (just a typedef)
* Support buf-size
* Support Options Extension
The source tarball and details can be found here:
http://lvtoolkit.org/releases/lvtk-v1-1-0
Hiho,
this Wednesday there is a Creative Music Coding lab meeting at STEIM:
"The CMC lab is an autonomous zone to try out sonic experiments as a
group. And an opportunity to leverage the expertise of the group in
realizing new artistic tools and processes through the medium of code.
Many of the founding members of the group are indeed experts in their
favorite languages, but we come from all technical levels of
proficiency and enjoy helping one-another out."
http://steim.org/event/creative-music-coding-lab-3/
DATE: Wednesday, 24 APRIL 2013
TIME: 19:00
ENTRY: FREE
LOCATION: STEIM Concert Space, Utrechtsedwarsstraat 134 Amsterdam, the
Netherlands
Sincerely,
Marije
Hi,
I'm happy to share with you a new beta release of io GNU/Linux, a complete
multimedia workstation based on Debian SID and built with the great Debian-
Live tools.
It includes programs for most uses, with Enlightenment e17+ecomorph as window
manager, Jack2 and Ladish, etc...
This build doesn't include documentation / getting started... Will be part of
a future iso.
Feedbacks welcome, enjoy :)
http://mk.biniou.net/iognulinux.html
Laborejo 0.7 is released.
Together with a new website design http://www.laborejo.org comes a new release of the Music Notation Workshop.
Besides the usual fixes and small enhancements please focus your attention on the following new features:
-Non Session Manager support. Start Laborejo through the NSM Gui and it will be under session management
-Numpad Palette and corresponding shortcuts. A gui widget shows you what musical objects your numpad will insert.
You can change the palette through the menu or by switching through with numpad-plus and numpad-minus.
-A moving playback cursor, showing you which part of Bachs "Kunst der Fuge" you currently don't understand
Laborejo -Music Notation Workshop- is a graphical user interface for Lilypond, a MIDI creator and finally a tool collection to inspire and help you compose. You get beautifully engraved notation through Lilypond and nice ways to control the playback without ever leaving a notation-based environment.
Latest Screenshot:
http://www.laborejo.org/latestscreenshot.png
Instructions and Download Page:
http://laborejo.org/Download
Greetings,
Nils Gey
http://www.laborejo.org
#laborejo on irc.freenode.org
