Hey,
I'm a little bit new to LADSPA and LV2, so this may be a naive question.
I would like to know why single precision floating point types are used in the plugin interface, instead of double precision.
I would also like to know if there are plans to standardize a plugin interface that may process double-precision instead of single-precision data (or both).
Hi all,
New images are ready for testing (amd64, i386) ;)
io GNU/Linux is a Live DVD/USB based on Debian Sid and focused on multimedia.
-> Kernel 4.9.13 and 4.9.13-rt, Jack2+PulseAudio as default sound server (can
be easily changed to Jack2+AlsaLoop, Jack2+ZitaBridge, PulseAudio or Alsa)
-> Enlightenment (e21) as desktop environment and a big collection of
installed software... Full persistence for USB install (with encryption) and
more stuff...
For more infos: manual, packages list, screenshots, video etc... Visit:
-> http://io.gnu.linux.free.fr
-> https://sourceforge.net/projects/io-gnu-linux/
Feedbacks welcome, enjoy :)
MK
Hi all,
New images are ready for testing (amd64, i386) ;)
io GNU/Linux is a Live DVD/USB based on Debian Sid and focused on multimedia.
-> Kernel 4.9.10 and 4.9.10-rt, Jack2+PulseAudio as default sound server (can
be easily changed to Jack2+AlsaLoop, Jack2+ZitaBridge, PulseAudio or Alsa)
-> Enlightenment (e21) as desktop environment and a big collection of
installed software... Full persistence for USB install (with encryption) and
more stuff...
For more infos: manual, packages list, screenshots, video etc... Visit:
-> http://io.gnu.linux.free.fr
-> https://sourceforge.net/projects/io-gnu-linux/
Feedbacks welcome, enjoy :)
MK
Hi Guys,
I’m trying to set up a minimal audio system (without X11) based on the ubuntu mini-iso.
When trying to start jack, i get this dbus error message:
...
sudo /usr/bin/jackd -p512 -dalsa -r48000 -p64 -n2 -D -Chw:MADIFXtest -Phw:MADIFXtest
jackdmp 1.9.10
Copyright 2001-2005 Paul Davis and others.
Copyright 2004-2013 Grame.
jackdmp comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details
no message buffer overruns
no message buffer overruns
no message buffer overruns
JACK server starting in realtime mode with priority 10
Failed to connect to session bus for device reservation Unable to autolaunch a dbus-daemon without a $DISPLAY for X11
Audio device hw:MADIFXtest cannot be acquired...
Cannot initialize driver
JackServer::Open failed with -1
Failed to open server
...
I’ve seen others mention the error but have not really found a solution. I guess part of the problem is that I’m not really sure what the error means :-)
So if anyone could be so kind to enlighten me?
cheers,
Fokke
For a couple years I've been trying, without success, to reliably mix two
audio streams on the fly in C. I'm using libao, libmodplug,
libsamplerate, libsndfile, and libvorbis. The program is Frotz
(https://github.com/DavidGriffith/frotz), a Z-machine emulator for playing
old Infocom games as well as newer ones. Could I please get some help
with this?
--
David Griffith
dave(a)661.org
Hello everybody!
Qtractor 0.8.1 (sticky tauon) is out!
Release highlights:
* JACK Transport mode switching on main menu/tool-bar (NEW)
* Main menu Track/Navigate/Next, Previous wrap around (FIX)
* Auto-backward play-head position flip-flopping (FIX)
* JACK Transport tempo/time-signature in-flight changes (FIX)
* Sanitized audio clip zoom-in/out resolution (FIX)
Obviously, this one dot bug-fix release and everyone is then compelled
to upgrade. On the side, a couple of notes are also worthy of mention...
Besides some other stray thoughts, you may be asking yourself, after
reading those crappy release highlights above, what the heck that
"in-flight" tempo / time-signature change-fix is all about?
No stress. There's always a reason, as if reason won't ever prevail,
above all else...
So, the whole truth and nothing but the truth, should here be told:
jack_link [8] is the dang reason. And then, you may now know and play
the badass with Ableton Link [7]. Keep in mind that jack_link [7] is
kind of a toy, so please, have it under a child's perspective ;)
You can still play all along with your band fellows, don't get me
wrong. You all have to be on the same machine or in the same local
network segment (LAN) anyway, just like yours truly QmidiNet [9] does
(and recommends). But that's probably one hell of a disparate story,
although sharing the same networking concept... move along!
Whatever. When in doubt, please ask me. Whenever you find yourself in
despair, you can also ask me. But take note that I made no promises nor
guarantees that it would ever work for you. And this goes as far as in
any formal disclaimer can go.
The hard truth is: your are on your own. But please, enjoy and have
(lots of) fun while you're at it ;)
As second note, this project has finally called in for its own vanity
and internet domain name: qtractor.org [1]. I guess it was about time.
Nuff said.
Qtractor [1] is an audio/MIDI multi-track sequencer application
written in C++ with the Qt framework [2]. Target platform is Linux,
where the Jack Audio Connection Kit (JACK [3]) for audio and the
Advanced Linux Sound Architecture (ALSA [4]) for MIDI are the main
infrastructures to evolve as a fairly-featured Linux desktop audio
workstation GUI, specially dedicated to the personal home-studio.
Website:
http://qtractor.sourceforge.nethttp://qtractor.org
Project page:
http://sourceforge.net/projects/qtractor
Downloads:
http://sourceforge.net/projects/qtractor/files
- source tarball:
http://download.sf.net/qtractor/qtractor-0.8.1.tar.gz
- source package:
http://download.sf.net/qtractor/qtractor-0.8.1-29.rncbc.suse.src.rpm
- binary packages:
http://download.sf.net/qtractor/qtractor-0.8.1-29.rncbc.suse.i586.rpmhttp://download.sf.net/qtractor/qtractor-0.8.1-29.rncbc.suse.x86_84.rpm
Git repos:
http://git.code.sf.net/p/qtractor/codehttps://github.com/rncbc/qtractor.githttps://gitlab.com/rncbc/qtractor.githttps://bitbucket.org/rncbc/qtractor.git
Wiki (help still wanted!):
http://sourceforge.net/p/qtractor/wiki/
License:
Qtractor [1] is free, open-source Linux Audio [5] software,
distributed under the terms of the GNU General Public License (GPL [6])
version 2 or later.
Change-log:
- The View/Options.../Display/Dialogs/Use native dialogs option is now
set initially off by default.
- All tempo and time-signature labels are now displayed with one decimal
digit, as it was in mostly everywhere else but the time ruler/scale headers.
- JACK transport tempo and time-signature changes are now accepted, even
though playback is not currently rolling; also, changing (JACK) Timebase
master setting (cf.View/Options.../General/Transport/Timebase) will take
effect immediately, not needing nor warning for session restart anymore.
- Track/Navigate/Next and Previous menu commands, finally fixed to wrap
around the current track list.
- Current session (JACK) transport mode option switching is now being
made accessible, from the main menu and drop-down toolbar buttons, as
well as user configurable PC-keyboard and/or MIDI controller shortcuts
(cf. Transport/Mode/None, Slave, Master, Full).
- Fixed some auto-backward play-head position flip-flopping, when
opening a new session while the previous was still on rolling/playing
state, hopefully.
- Added French man page (by Olivier Humbert, thanks).
- MIDI clip changes are now saved unconditionally whenever the editor
(piano-roll) is closed or not currently visible.
- Audio clip peak/waveform files re-generation performance, scalability
and resilience have been slightly improved.
- Some sanitary checks have been added to audio clip peak/waveform
re-generation routine, as much to avoid empty, blank, zero or
negative-width faulty renderings.
- Do not reset the Files tree-view widgets anymore, when leaving any
drag-and-drop operation (annoyingly, all groups and sub-groups were
being closed without appeal).
- Make builds reproducible byte for byte, by getting rid of the
configure build date and time stamps.
References:
[1] Qtractor - An audio/MIDI multi-track sequencer
http://qtractor.sourceforge.nethttp://qtractor.org
[2] Qt framework, C++ class library and tools for
cross-platform application and UI development
http://qt.io/
[3] JACK Audio Connection Kit
http://jackaudio.org
[4] ALSA, Advanced Linux Sound Architecture
http://www.alsa-project.org/
[5] Linux Audio consortium of libre software for audio-related work
http://linuxaudio.org
[6] GPL - GNU General Public License
http://www.gnu.org/copyleft/gpl.html
[7] jack_link, a JACK transport timebase bridge to Ableton Link [8]
https://github.com/rncbc/jack_link
[8] Ableton Link, a technology that synchronizes musical beat, tempo,
and phase across multiple applications running on one or more devices
https://github.com/Ableton/link
[9] QmidiNet - A MIDI Network Gateway via UDP/IP Multicast
http://qmidinet.sourceforge.net
See also:
http://www.rncbc.org/drupal/node/1809
Enjoy && Keep the fun, as always.
--
rncbc aka. Rui Nuno Capela
rncbc(a)rncbc.org