Linux-audio-dev

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7502 discussions

MeeGo for better handheld/tablet multimedia? (was Re: Android audio plugins)

by Niels Mayer

Given all the needed Linux dependencies, and the difficulties of getting decent audio performance on Android, what about not using Android and using good ol' Linux instead? Specifically, MeeGo on the Nokia N9 ( https://flors.wordpress.com/2011/06/20/nokia-n9-state-of-the-art-of-mobile-… ). I'm sure that it will be easier to create handheld multimedia applications on an in-production and widely-distributed, supported product that supports the full stack of libs and development tools already in use by the LAD community.... .................. Fortunately, a bunch of interesting multimedia projects will be getting a Nokia N950 to develop applications for the upcoming Nokia N9 ( see also http://shootspeak.com/2011/06/24/nokia-n9-extra-facts-tidbits-updates/ ). The following are excerpted from http://wiki.meego.com/Community_Office/Community_device_program/Nokia#Accep… as of July 2 2011: -- Porting Maesynth and Maelophone from N900 Python to QML and C++. Stress testing the new Qt Game Enabler to see if we finally have low latency audio support in Qt. Will also look to see if we can get midi sample support via Wild Midi or equivalent. -- Porting FunkeySynth, a MeeGo Tablet synthesizer to Harmattan http://sandst1.wordpress.com/ -- Develop an audio recording application with geo-location support, plus other applications to improve personal productivity utilising the Harmattan notification/event view. -- Develop FM RDS applications with focus in the new standards from RadioDNS like the RadioVIS (partly based in the already existent the N900-fmvis http://code.google.com/p/n900-fmvis/). I'm a member of a university radio station (Radio Muda FM, 88.5MHz) and my plan is to develop "real life" radio station applications. I'll also rewrite an application I did for audio streaming, darknow (a gui for darkice, http://darksnow.radiolivre.org) which is an icecast2 client, and also write an audio/video icecast2 client (based in a software I did called theorur, http://theorur.sarava.org), all using QT. -- Porting XBMC + MeeGo TV stuff + doing audio continuums using pulseaudio. -- Creating a Libre.fm radio client and porting Jokosher to small screen devices. -- Meex, a portable DJing application http://jenkins.vitaminj.co.uk/job/meex/ -- Porting Amarok to tablets and handsets running MeeGo/Harmattan. -- Developing an audio player to access to more than 47 000 webradios referenced on AOL shoutcast (by name, genre, current track) -- Panucci - Resuming audiobook and podcast player -- http://mediadownloader.cz.cc/?page_id=2 -- LinuxMCE is a next generation smart home platform encompassing media, home automation, telecom, and security features. http://www.linuxmce.org/ -- Porting Flumotion an open source streaming solution to Harmattan taking advantage of the hardware encoding and the camera -- magnus-plus photo: an application that combines a camera-based magnifier with more advanced image processing techniques -- Photographer's application suite (SnapGo, currently) to include feature like a light meter and GPS track recording. -- And last, but not least, I'm Looking forward to getting mine soon. :-) [For: http://wiki.meego.com/tubelet-and-cutetube-port and http://code.google.com/p/ytd-meego/wiki/CitizenJournalismWithYoutubeDirectF… ] Niels http://nielsmayer.com PS: As long as floating-point limited CPU's (ARM) are the norm among mobile processors, there may be a final calling for really complicated audio synthesis to be done entirely with integer arithmetic. Which may necessitate a different and more monolithic architecture -- one where everything is done/controled in&by the application itself, as opposed to using jack. Given the limited screen real estate available, how much can you expect to successfully control and mix simultaneously anyways? PPS: The successful apps figure out dedicated gestural/haptic/vocal interfaces to control all the knobs-and-dials underneath, e.g.. http://smule.com/ 's http://ocarina.smule.com/ (see http://www.youtube.com/watch?v=uHtCAAj8jFI ). PPPS: speaking of having a complete "Linux" stack , what about WebOS and the HP Touchpad? http://www.wired.com/reviews/2011/06/hp-touchpad/

13 years, 12 months

Re: [LAD] Android audio plugins

by Jeff McClintock

> From: Nick Copeland > Don't you think it is more likely that people who are interested will run > Linux as a replacement for Android on the ARM tablets rather than have > the apps ported over? "Smartphone growth is on a meteoric rise, with Android leading the way... Android follows with 14.5%, and iOS with 13.8%. This is the first time Android has eclipsed iOS share in the InMobi network" Android penetration (14.5%) is an order of magnitude bigger than Linux desktop (at about 2%?). My prediction - Android rapidly surpasses Linux application base and mindshare. Jump on board *early* LV2 ;) Best Regards, Jeff

14 years

[ANN] QjackCtl 0.3.8 released!

by Rui Nuno Capela

Howdy! JACK Session versioning is quite simply the most interesting new feature for this release. It's optional but enabled by default. One can just turn it off and keep the bad old take-no-prisoners behavior :) Never is too late, QjackCtl 0.3.8 has been released! Enjoy. Website: http://qjackctl.sourceforge.net Project page: http://sourceforge.net/projects/qjackctl Downloads: - source tarball: http://downloads.sourceforge.net/qjackctl/qjackctl-0.3.8.tar.gz - source package (openSUSE 11.4): http://downloads.sourceforge.net/qjackctl/qjackctl-0.3.8-2.rncbc.suse114.sr… - binary packages (openSUSE 11.4): http://downloads.sourceforge.net/qjackctl/qjackctl-0.3.8-2.rncbc.suse114.i5… http://downloads.sourceforge.net/qjackctl/qjackctl-0.3.8-2.rncbc.suse114.x8… 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: - Debugging stacktrace now applies to all working threads. - Session "Save" button now a drop-down menu, replacing the session save type combo-box/drop-down list selection. Also, an early session directory versioning/numbering scheme is now in place, although optional. - Probable fix to debian bug report #624198 - segfault when pressing the stop button (by Grant Adrian Diffey, after a patch from Adrian Knoth, thanks). - Desktop environment session shutdown (eg. logout) is now tapped for graceful application exit, even though the main window is active (visible) and minimizing to system tray is enabled. Both were causing first shutdown/logout attempt to abort. Not anymore, hopefully ;). - Make sure all activated patchbay definition files are in their complete and absolute directory path forms. - Connections refresh button now does an immediate and true reconstruction of all clients and their respective ports and connections, unconditionally. - Command line server start option (-s, --start) is now made independent from configuration setup option (cf. Setup/Misc /Start JACK audio server on application startup). - Now handling cable socket types properly to let patchbay definitions work correctly, whenever having sockets with the very same literal name (twisted from patch #3183467, by Karsten, thanks;). - Abrupt focus behavior when any of the keyboard modifiers (Shift, Ctrl, Alt, Caps Lock) is hit while on Connections client/port aliases editing (rename) has been fixed. - Russian (ru) translation updated (by Alexandre Prokoudine). - Added include "errno.h" alegedly missing for BSD style systems (applying patch for bug #3126091). Cheers && Enjoy -- rncbc aka Rui Nuno Capela rncbc(a)rncbc.org

14 years

petri-foo/specimen license formalizations/clarifications

by James Morris

hi, sorry for cross posting (again), but i want to try and get this out to all people who've been involved in specimen development over the years. i've add a gpl header to all source files with (where appropriate) copyright attributed to Pete Bessman as original specimen author and myself as current developer of petri-foo. there are some files i claim to be my own work, these are listed in PETRI-FOO_ORIGINAL_FILES along with short explanations. the changes can be found in the latest git commit. https://github.com/jwm-art-net/Petri-Foo if anyone has issues, or finds a lack of attribution to their work, or thinks how it's done is unfair, speak up.... but please don't get all esoteric about it ;-) regards, james.

14 years

wiki page: dead projects

by Renato

Hello, I created this wiki page http://wiki.linuxaudio.org/apps/all/dead_projects which stems from a thread I had started about a year ago here on LAD, asking for people to tell what software they found very valuable but no longer maintained. I have no prior experience with the wiki so I probably have made some mistakes, first of all for example I'm not sure if the page is placed in the right place. Would someone with more experience kindly point out or even better correct these mistakes? Also, maybe a distinction should be made: for example, while jack-rack AFAIK doesn't have a dev periodically maintaining it, I think no one would call it "dead", since it is quite usable and used; I'm pretty sure that if in the future it wouldn't compile anymore due for example to some gtk libraries not backwards compatible, someone would pretty fast come up with a patch. So, does it belong to the list? Or should we just change the name to "abandoned projects", and thus even examples like jack-rack would fit in? As of now there are two problems with the content of the page: 1) Tau physical modelling is a software that was mentioned in the said LAD thread, but I couldn't find it anywhere online. links anyone? 2) Softwerk by Paul Davis was mentioned, but then Paul chimed in and said he had just committed to svn, however I couldn't find the svn address... So, Paul, could you kindly provide us the svn address, to add maybe here http://apps.linuxaudio.org/apps/all/softwerk or if you're no longer working on it, could we add it to the list? Ideally this page would be a place where developers in search for a nice project would go, so I would find it good to link to it in some places, but I'm not sure where... probably here http://wiki.linuxaudio.org/apps/categories/development would be a good idea, but I wasn't able to edit the page. Then maybe even some place more upfront like here?: http://www.linuxaudio.org/resources cheers renato

14 years

Petri-Foo preview release: 0.0.2

by James Morris

Hello hello, The second official source code release Petri-Foo is now available. IMPORTANT: I have designated this release as a 'preview' release to indicate this is still a work in progress so that users may be aware things may change and their files may not be usable without alteration in future versions. HOWEVER: I feel Petri-Foo has moved along quite nicely since 0.0.1 in April and would like to share that work with a few more of you than are subscribed to the Petri-Foo developers list. WHAT'S NEW.... and good (since 0.0.1): * Default Patch A default patch using a looped generated triangle wave sample, with an ADSR, LFO, and MIDI CC setup with sensible/default values so a new user can immediately hear audio. * Selectable MIDI controllers MIDI controllers are now selectable amongst all the other modulation sources. This has two benefits, the first is being given the choice (of course), and the second is that you can now control how much effect the controller has. * Patchlist context menu You can now right-click on the patch list to get a context menu to allow you to perform add, remove, rename, and duplicate operations on patches. * Keyboard tracking Keyboard tracking has been added to all the parameters, and additionally, to the envelopes where it modifies envelope duration. * LFO Amplitude modulation The LFOs now have amplitude modulation so that. For example, the default patch uses this in combination with the MIDI Mod Wheel controller to control pitch modulation. * RAW sample format loading Allows one to load files never intended to be heard :-) * Removal of LASH support * Removal of ALSA *audio* output (note: ALSA MIDI still supported) * Miscellaneous bug fixes and GUI clean ups. Home pages... http://petri-foo.sourceforge.net http://github.com/jwm-art-net/Petri-Foo Download... http://sourceforge.net/projects/petri-foo/files/Source/petri-foo-0.0.2.tar.… git clone git://github.com/jwm-art-net/Petri-Foo.git Bug reports... https://sourceforge.net/tracker/?group_id=404816 jwm.art.net(a)gmail.com Mailing list... https://lists.sourceforge.net/lists/listinfo/petri-foo-devel please note, if you're not a member your messages ****are automatically rejected**** :-p cheers, regards, James.

14 years

Re: [LAD] Android audio plugins

by Paul Giblock

> And this is what I'm wondering... could/should this be done with an LV2 extension? > I'm not qualified to answer that. Although, something like the HTTP Accepts header and content negotiation comes to mind.

14 years

bugfix update of zita-at1

by Fons Adriaensen

Hello all, The recent zita-at1 release (0.2.2) had some test code in it making it transpose everything down by an octave. Fixed in 0.2.3, available now at <http://kokkinizita.linuxaudio.org/linuxaudio/downloads> Sorry for the unexpected noises, and thanks to Adrian Knoth for reporting this bug. -- FA

14 years

Determining Phase

by pshirkey＠boosthardware.com

Hi, Can anyone point me to a simple code example for how to determine the phase at a specific time in a waveform? ex. if I have a sample that is 5 seconds long and want to know the phase at 2.5 seconds I'm open to code in any language or a scripted example if such a tool exists. If there is an ui which has that feature I am also interested. Cheers -- Patrick Shirkey Boost Hardware Ltd

14 years

[OT] Comparison recordings of CoreSound Tetramic and Soundfield ST450

by Jörn Nettingsmeier

Hi *! For those interested in Ambisonic surround sound: finally I've managed to upload some side-by-side recordings of a Tetramic and the new ST450 which have been sitting on my harddisk for way too long. http://stackingdwarves.net/download/TetraMic_vs_ST450/ Hopefully the recordings are worth your time even if you're not currently shopping for a new surround microphone. Attached is a README that goes with the audio files. Enjoy, Jörn

14 years

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Linux-audio-dev