AudioGrapher is a C++ library for managing signal flow within
applications or plugins. It is mainly a bunch of utility classes that
ease passing data around and debugging error situations. Currently it
also includes all the functionality that is used in Ardour's export,
including the following:
- sample rate conversion (libsamplerate)
- sample format conversion (gdither)
- file i/o (libsndfile)
- interleavin/deinterleaving
- normalizing
- threading parallel datapaths
- unit tests for most of these
I'm planning on using AudioGrapher in future dsp code (plugins
probably), so more functionality will be available, just no promises
when :)
This might sound a lot like GStreamer, but here are some differences:
- AudioGrapher is "modern" C++ instead of C
- The core of AudioGrapher is only 12 headers
- AudioGrapher is designed to be usable in RT applications (AFAIK most
of GStreamer is not)
- Extending AudioGrapher is extremely simple if you know your C++
- Audiographer was designed for audio only, but can stream other data also
Error checking and debugging can be adjusted using C++ template
parameters on a per-class basis. This means that only the chosen level
of error checking and debugging is built in at compile time. This makes
it possible to remove all overhead from performance critical parts.
Doxygen documentation is available at
http://beatwaves.net/files/software/audiographer/doc/index.html
and you can get the code via SVN from
http://svn.beatwaves.net/svn/libaudiographer/trunk
Some history if for the interested:
The very first ideas behind AudioGrapher were born in the summer of 2008
during my summer of code work on Ardour. I needed something that was
able to move around different amounts of data in different data formats.
So I made very simple Sink and Source classes. At the end of last year I
started making some changes to the data flow in Ardour's (3.0) export,
and noticed it would be worth making this a separate library which would
be usable in other projects also. I started working on AudioGrapher in
the beginning of November, and by January I had something I thought was
worth publishing. And over a month later here we are...
-Sakari-
> I would want to be able to assign midi
> control to triggering loops, volume and panning - at least that. Otherwise,
> Kluppe is very difficult to use in a live performance.
>
> However, instead of proposing to allow to create separate controls for each
> looper like they have in SooperLooper, I would advice (and actually, ask
> for
> this feature to be implemented in such a manner) to instead go for the
> Selected looper scheme. So that one would not need a dozen of knobs to
> control things. There should be an ability to have one "Selected" looper.
>
sooperlooper allready has this feature, look for the latest releases.
simple MIDI programming with bash/mididings, pd or csound could easily add
the "random" feature to it
olivier
Hello all,
Some updates are available on
<http://www.kokkinizita.net/linuxaudio/downloads>
1. libclalsadrv-2.0.0
This the the Alsa interface library used by Aeolus, Jaaa,
Japa and AMS.
The new release allows to specify separate Alsa device
names for playback, capture and control, i.e. it allows
the use of 'split' devices that may result from e.g.
combining several soundcards into one device.
The old API is still available but will be removed in
future releases.
Note that 2.0.0 is *not* binary compatible with the
previous release (hence the major version increment),
and may require a recompile of the apps using it.
There are two example programs in the 'apps' directory.
* alsa-loopback: just copies stereo input to output.
* alsa-latency: latency measurement, same algorithm
as used in jack_delay.
2. jaaa-0.6.0 and japa-0.6.0
* General cleanup, now compile without warnings using
gcc-4.4.3.
* When using Jack, a new option (-s) allows to specify
the Jack server to use.
* Require libclalsadrv-2.0.0.
* When using Alsa, two new options (-P, -C, used instead
of -d) allow to specify a split Alsa device.
* Added $(DESTDIR) to the Makefiles.
3. Aeolus-0.8.4
* Same changes as for Jaaa and Japa (except for -C, -P).
* Five new temperaments added, provided by Hanno
Hoffstadt and Adam Sampson.
Note to AMS users: if you have a binary install of AMS
make sure not to remove the current libclalsadrv. If you
have a source install, update libclalsadrv and recompile
AMS.
Ciao,
--
FA
O tu, che porte, correndo si ?
E guerra e morte !
Indamixx Is Hiring - Developers Wanted
Trinity Audio Group Inc. is seeking core developers for the Indamixx project
and Transmission Distribution and Audio OS.
Maintenance and developing specifics:
- Custom kernel work, systems building.
- Real Time (RT) kernel (low latency)
- JACK
- ALSA
Also any Ardour experts for ongoing customer support is vital, as we are
looking to significantly increase our support efforts for Ardour globally
and the entire Indamixx project going forward.
contact and resume:
ronaldjstewart(a)gmail.com
Thank you
Ronald Stewart
Creative Director
Trinity Audio Group Inc.
9854 National Blvd. #322
Los Angeles CA 90034
213-915-6020
ronaldjstewart(a)gmail.com
The CLAM project[1] is delighted to announce the long awaited 1.4.0 release of
the C++ framework for Audio and Music, code name '3D molluscs in the space'.
[1] http://clam-project.org
In summary, this long term release includes a lot of new spacialization
modules for 3D audio; MIDI, OSC and guitar effects modules; architectural
enhancements such as typed controls; nice usability features for the
NetworkEditor interface; convenience tools and scripts to make CLAM experience
better; enhanced building of LADSPA plugins and new support for LV2 and VST
plugin building; a new easy to use application to explore songs chords called
Chordata; many optimizations, bug fixing and code clean ups.
Many thanks to the people who contributed to this release, including but not
limited to the GSoC 2008 students and all the crew at Barcelona Media's Audio
Group.
Some details follow:
* Chordata is a new CLAM application which offers a user friendly way to
explore the chords of your favourite songs, using already existing technology
in the CLAM framework but with a much simpler interface. [2]
[2] http://www.youtube.com/watch?v=xVmkIznjUPE
* The spacialization module and helper tools, contributed by Barcelona Media
[3] audio group, turn CLAM in tandem with Blender and Ardour, into a powerful
3D audio authoring and exhibition platform.[4]
[3] http://barcelonamedia.org
[4] http://www.youtube.com/watch?v=KSfqJUIAiXk
* Typed controls extend CLAM with the ability to use whichever C++ type as the
message for a control. So, not just floats, but also bools, enums, integers, or
envelopes can be sent as asynchronous controls. Examples on boolean and MIDI
controls are provided.
* NetworkEditor has been ported to the QGraphicsView [5] framework. Dealing
with heavy networks such the big ones used in Barcelona Media have pushed
many usability enhancements into its interface: multi-wire dragging, wire
highlighting, default port and control actions, network and in-canvas
documentation... [6]
[5] http://doc.trolltech.com/latest/qgraphicsview.html
[6] http://www.youtube.com/watch?v=0kt0WDmvMwo
* It also made necessary to provide a tool such clamrefactor.py to perform
batch high level changes to clam network XML files such as renaming processing
types, ports, or configuration parameters, changing configuration values,
duplicating sets of processings, connecting them...
* Music Annotator application now is designed to aggregate several sources of
descriptors and update them after edit. Descriptors are mapped to a work
description schema that can be graphically defined. Also semantic web
descriptor sources to access webservices such as MusicBrainz have been
implemented.
You can download sources, windows, debian and ubuntu packages from the
download page[7]. Contributed binaries for other platforms are welcome.
[7] http://clam-project.org/download/
See also:
Screenshots: http://clam-project.org/wiki/Development_screenshots
Youtube channel: http://www.youtube.com/group/clamproject
Detailed changelog: http://clam-project.org/clam/trunk/CLAM/CHANGES
Version migration guide: http://clam-project.org/wiki/Version_Migration_Guide
--
David GarcÃa Garzón
(Work) david dot garcia at upf anotherdot edu
http://www.iua.upf.edu/~dgarcia
Hi!
I have an audio file (say, ~10 seconds) and want to see detailed spectrum at
wide range (say, from 10Hz up to Fs/2). There is excellent FA's jaaa analyzer
(and I use it at constant base), but it has linear freq axis, while log scale
is more appropriate at the case. Off-line (not real-time) analysis (with as
well as possible quality) would be appropriate.
Suggestions?
Andrew
Hi,
On Wed, 2010-03-10 at 12:51 +0100, rosea grammostola wrote:
>
>
>
> On Wed, Mar 10, 2010 at 12:44 PM, Gerald Mwangi <gerald.mwangi(a)gmx.de>
> wrote:
>
> Hi Guys,
> At last I've managed to put my music online.
> Check out http://www.jamendo.com/de/album/62900.
> 'Let it go' is my first Linux only production, and now I have
> fully
> converted to Linux. Jack-Apps just rock!
> Please send me your impressions.
> Regards,
> Gerald
>
>
> Congratulations!
Thanx
>
> That bass sounds good, do you play the instruments yourself?
> What software did you use for what?
>
> \r
If you just mean Let it go: All instruments recorded by me, samples off
the net. To fill the background I beatboxed a little and made some weird
sounds with my voice, and sent that through some filters (Ladspa
C*-plugins)
Software: Ardour, hydrogen,various plugins (oh wonderful C*+CALF
plugins). Automation was done using an M-Audio Oxygen8
Gerald
Hi Guys,
At last I've managed to put my music online.
Check out http://www.jamendo.com/de/album/62900.
'Let it go' is my first Linux only production, and now I have fully
converted to Linux. Jack-Apps just rock!
Please send me your impressions.
Regards,
Gerald
On 08/03/2010, Ray Rashif <schivmeister(a)gmail.com> wrote:
> On 08/03/2010, Paul Davis <paul(a)linuxaudiosystems.com> wrote:
>> On Sun, Mar 7, 2010 at 10:17 AM, Philipp <hollunder(a)lavabit.com> wrote:
>>> Hi there.
>>> The distro I'm using installs a script with jack that lets it run as a
>>> daemon.
>>
>> I know that I personally do not consider this an appropriate way to
>> run JACK, and I am irritated by distributions that do this. That
>> doesn't mean I'm right.
>
> It runs as (1) a dummy user or (2) a normal, real user if configured.
> It will fail if there is no user defined. If I recall correctly, you
> do not consider running jackd as root an appropriate way to run jack.
>
> But if you say you do not condone automatically starting jackd on
> bootup or having a daemon for it, then I'm sure this functionality
> will be gladly removed.
Oops, clicked on the wrong reply button.
--
GPG/PGP ID: B42DDCAD
Awe!
Times they are a-changing although Bob Dylan has no D-Business here. The
old and cutie gooey for JACK just got one turn around the verge of
bit-rotting. This time it brings full JACK D-Bus support, or almost. It
also adds D-Bus access for most GUI actions which some might find pretty
handy for keyboard shortcut binding from your desktop environment of
choice. However, if babies health is your top concern you can just turn
this D-Bus thing off and play with the old times ;) Ahem...
QjackCtl 0.3.6 is now released!
More details in the change-log, below.
Website:
http://qjackctl.sourceforge.net
Project page:
http://sourceforge.net/projects/qjackctl
Downloads:
- source tarball:
http://downloads.sourceforge.net/qjackctl/qjackctl-0.3.6.tar.gz
- source package (openSUSE 11.2):
http://downloads.sourceforge.net/qjackctl/qjackctl-0.3.6-2.rncbc.suse112.sr…
- binary packages (openSUSE 11.2):
http://downloads.sourceforge.net/qjackctl/qjackctl-0.3.6-2.rncbc.suse112.i5…http://downloads.sourceforge.net/qjackctl/qjackctl-0.3.6-2.rncbc.suse112.x8…
- binary packages (Ubuntu 8.04):
http://downloads.sourceforge.net/qjackctl/qjackctl_0.3.6-1.rncbc.ubuntu804_…http://downloads.sourceforge.net/qjackctl/qjackctl_0.3.6-1.rncbc.ubuntu804_…
- binary packages (Ubuntu 9.10):
http://downloads.sourceforge.net/qjackctl/qjackctl_0.3.6-1.rncbc.ubuntu910_…http://downloads.sourceforge.net/qjackctl/qjackctl_0.3.6-1.rncbc.ubuntu910_…
Weblog (upstream support):
http://www.rncbc.org
License:
QjackCtl is free, open-source software, distributed under the terms of
the GNU General Public License (GPL) version 2 or later.
Change-log:
- Make sure socket names are unique on each side of the Patchbay
(another patch from Dominic Sacre, thanks).
- A bunch of primitive D-Bus interface slots have been added, allowing
shortcut access to most of main applications actions like toggling
Messages, Status, Connections, Patchbay widget pop-ups, reset stats,
transport and so on. New bindings are given eg. via dbus-send --system /
org.rncbc.qjackctl.(main, messages, status, connections, patchbay,
setup, about, reset, rewind, backward, play, pause, forward). (from an
original idea from Sebastian Gutsfeld, thanks).
- Patchbay snapshot now tolerates JACK client port strings that have
more than one semi-colon in it, honoring just the first one exactly as
everywhere else eg. Connections. (a glitch as reported by Geoff Beasley
while using a2jmidid).
- Most modal message dialog boxes (eg. critical errors) are now replaced
by system tray icon bubble messages where available (mitigating feature
request #2936455).
- Comply with jackd >= 0.118.0 which now runs in real-time mode by
default; use of -R is now deprecated from the jackd command line
interface options; use -r to run in non-real-time-scheduling.
- A man page has beed added.
- Got rid of a pretty old and never really useful "jackd-realtime"
server path option--actually, it was only seen available on the now
defunct old Mandrake Linux distro.
- D-Bus support, as provided by org.jackaudio.service aka jackdbus, is
now being introduced and used wherever available and whenever enabled.
Configuring, starting, stopping and logging the JACK back-end server
through the "infamous" jackdbus service is now being seamlessly exploited.
- Global configuration state is now explicitly saved/committed to disk
when Setup dialog changes are accepted and applied.
- Server name command line option added (-n, --server-name).
- Single application instance restriction option added (X11).
- Setup for the netjack (slave) "net" driver has now sample-rate and
frames per buffer (period size) settings disabled and/or ignored, as
those are pretty much auto-detected by default; also, a new "netone"
backend driver option has been introduced (as suggested by Torben Hohn).
- Czech (cs) translation added (by Pavel Fric).
- Fixed some main window keyboard shortcuts. Escape key now closes
Connections, Patchbay, Status and Messages widgets as usual (bug #2871548).
- Fixed glitch on configure portaudio support, specially when the
library is not detected as available.
Cheers && Enjoy.
--
rncbc aka Rui Nuno Capela
rncbc(a)rncbc.org
