Linux-audio-user July 2010

linux-audio-user@lists.linuxaudio.org

129 participants
113 discussions

[ANN] StretchPlayer 0.502: Real-time audio player with time stretch

by Gabriel M. Beddingfield

I am pleased to release StrechPlayer 0.502, a time-stretching, pitch-shifting audio file player. It is powered by librubberband, and also features an A/B repeat. NEW IN THIS RELEASE ------------------- * Reduced Xorg load (was typ. 20-30% CPU even when idle) * Fix build errors on 64-bit systems (incompatible integer types). * Add CMake USE_COMPOSITING option to explicitly disable compositing features. LINKS ----- Home Page: http://www.teuton.org/~gabriel/stretchplayer/ Tarball: http://www.teuton.org/~gabriel/stretchplayer/stretchplayer_0.502.tar.gz Binary: Ubuntu/Karmic http://www.teuton.org/~gabriel/stretchplayer/stretchplayer_0.502_karmic_i38… http://www.teuton.org/~gabriel/stretchplayer/stretchplayer-dbg_0.502_karmic… Debian Dsc: http://www.teuton.org/~gabriel/stretchplayer/stretchplayer_0.502.dsc Git: http://gitorious.org/stretchplayer git://gitorious.org/stretchplayer/stretchplayer.git USING THE PROGRAM ----------------- After stretchplayer is installed, there should be an [S] icon under Multimedia or Sound. Or, you can run it from the command line like this: $ stretchplayer The GUI is pretty self-explanatory, and if you hover over the controls a tool-tip should appear. The GUI also has several keyboard accelerators. To play a file, click the file-open icon and select an audio file. Stretchplayer can play anything that libsndfile supports (ogg, flac, wav, etc.). However, it does /not/ support MP3 files at this time. As the file plays, slide the horizontal slider left or right to change the speed of the song. If you wish to transpose the audio, push one of the + or - buttons. INSTALLING THE PROGRAM ---------------------- You will need at least a 1200 MHz processor[1] to use this program. It also requires the following libraries: * Qt >= 4.4 http://qt.nokia.com * librubberband http://www.breakfastquay.com/rubberband/ * libsndfile http://www.mega-nerd.com/libsndfile/ * JACK http://jackaudio.org/ * CMake http://www.cmake.org/ If you are running Ubuntu Karmic or Ubuntu Jaunty, you can install the .deb packages like this (from the command line): $ sudo dpkg -i stretchplayer*_0.502_karmic_i386.deb Anyone else will need to build from source. Please read the INSTALL.txt file that comes with the taarball. Peace, Gabriel M. Beddingfield 2010-07-11 [1] With this release, Stretchplayer works OK (but not great) with an 800MHz Celeron processor. Before this release, it was unusable on this system.

14 years, 5 months

JACK: more on inputs and outputs

by Andrew Bryant

I think this must be a quirk of the hardware: onboard Intel 82801BA-ICH2, chip AD1885 Jackd running, meterbridge connected to alsa_pcm:capture_1 and _2 Everything on alsamixer un-muted and faded up (except the 20db mic gain). Signal plugged to the mic input appears both on the meters, and on the h/p jack Signal plugged to the line jack appears at the h/p jack, but not on the meters. I find this baffling. Andrew.

14 years, 5 months

Elementary JACK questions

by Andrew Bryant

Is this a good place to ask questions about jackd? Andrew Bryant

14 years, 5 months

[RE] Отзыв о рассылке

by Лилия Бакова

Екатерина, здравствуйте! Рассылка работает, почему нет? _______________ Мои проекты: http://eligans.ru http://lan-electric.ru http://adivas.ru

14 years, 5 months

MIDI over serial port

by Dominic Sacré

Hi, I have a somewhat older synthesizer that, in addition to the regular MIDI in/out/thru ports, also has a serial connector (labeled "TO HOST"). Now I'd like to use this serial connection to connect the synthesizer to my Laptop. This gets a little more complicated by the fact that the Laptop does not have an actual serial port, so I'm using an additional USB/Serial adapter in between. What driver or tools do I need to get this combination to work? For serial MIDI there's the snd-serial-u16550 module, but as far as I can tell it only works for "real" serial ports. I've also seen a snd- serialmidi module mentioned a couple of times, but it seems to have been removed from the kernel years ago. Any other ideas? Thanks, Dominic

14 years, 5 months

Yet another audio interface post

by Pedro Ferreira

Hello, I was wondering if anyone here has ever tried this one: http://www.native-instruments.com/#/en/products/producer/audio-kontrol-1/?p… They claim that it is supported under Linux: http://www.native-instruments.com/en/support/compatibility/linux/ And the ALSA matrix seems to confirm it: http://www.alsa-project.org/main/index.php/Matrix:Vendor-Native_Instruments However, i haven't found any reports from people using it for recording. Otherwise, I'd like to know if there are any USB2 audio interfaces known to work fine with Linux, as my recording PC is a laptop and I was lucky enough to buy one that includes the infamous Ricoh R5C832 firewire chipset :( Thanks in advance, Cheers, Pedro

14 years, 5 months

Re: [LAU] OT Rant: When will people stop comparing, Windows/Linux apps?

by Kim Cascone

http://createdigitalmusic.com/2009/08/04/linux-music-workflow-switching-fro…

14 years, 5 months

iTunes XML to M3U playlist conversion

by Kevin Cosgrove

Hi folks, I've got a file named ContentsDB.xml which looks like an iTunes playlist. I'd like to convert it to an m3u file. I did a websearch for that and the software I found was mostly for non Linux systems. Of _course_ I want Linux FOSS software for this. Also, none of the MP3 files in the collection have tags. I can tell the song names, track numbers, and artists from the directory structure and file names. But, that schema doesn't indicate the album titles. But, I *can* see album titles in the XML file. For extra credit, I'd like to find a program that can read the XML file and tag the MP3s with that information. Thanks all.... -- Kevin

14 years, 5 months

[ANN] xjadeo 0.4.11

by Robin Gareus

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Bonjour a tous, xjadeo v0.4.11 has been released. Source & binaries are available from https://sourceforge.net/projects/xjadeo/files/ Release Notes for xjadeo 0.4.11 (svn r239) - ------------------------------------------ Xjadeo - X Jack Video Monitor http://xjadeo.sourceforge.net/ Xjadeo is a simple movie player that synchronizes video playback to an external time source such as jack-transport or Midi timecode. Recent Changes (v0.4.10 -> v0.4.11) * new default parameters: - screen-update-fps = filefps (use '-f 10' for prev. default) - MTC-quater-frame: on (use '-c' to disable it) * added JACK-MIDI port for MTC (./configure --enable-midi=jack ) * System-V IPC remote ctrl mode (OSX does not support POSIX-MQ) * xjremote is now part of the OSX bundle * added '{' and '}' keyboard shortcuts to modify time-offset in larger steps * many small remote-ctrl extensions for ardour3 integration - allow to disable some GUI interactions (close window, left-mouse-click) - added aliases for full-screen & position remote-ctrl commands (alphabetical order of commands now does the right thing: size, position, fullscreen -> size, xy, zoom) - -- Robin Gareus mail: robin(a)gareus.org site: http://gareus.org/ chat: xmpp:rgareus@ik.nu blog: http://rg42.org/ lab : http://citu.fr/ Public Key at http://pgp.mit.edu/ Fingerprint : 7107 840B 4DC9 C948 076D 6359 7955 24F1 4F95 2B42 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iEYEARECAAYFAkw/H30ACgkQeVUk8U+VK0KMfgCfWRM9PZ10pjg2WYTG4vFUjSYG A30An1m6b4ZxLX7rwujRrMhyUYQK13/n =FidF -----END PGP SIGNATURE-----

14 years, 5 months

Help finding parts for building a hardware system

by Mike McGonagle

Hello all, I recently have started having some issues with my current computer, an old Mac OSX laptop, so I want to build a computer (desktop or otherwise) to replace this older system. I pretty much have a list of some specs that I would like in this machine, but in starting a search for these things online, I feel I am getting nowhere fast. I am looking to building around some Linux distro, but I am not "married" to any particular system. My only hardware requirements are the ability to connect up my USB midi interface. I would also like to be able to capture digital audio from my external synths. If anyone could possibly give me a handle on some direction of where to start looking, it would be greatly appreciated. It just seems that there is so much information out there, and Google doesn't seem to be helping sort out the things I would need. Thanks, Mike

14 years, 5 months

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Linux-audio-user July 2010