Linux-audio-user November 2010

linux-audio-user@lists.linuxaudio.org

123 participants
93 discussions

by Rustom Mody

Thanks Jeremy for all the screencasting help. Heres my attempt https://docs.google.com/leaf?id=0B3gsacOF56PxMjlhY2NlOTgtNGEyNS00M2FiLTg1OG… Any thoughts/suggestions for improvements will be most welcome!

14 years, 1 month

Linux Audio Monthly Round-Up #4 – November 2010

by Jeremy Jongepier

Dear all, Linux Audio Monthly Round-Up #4 – November 2010 has been published: https://linuxaudio.org/node/122 Here it is, Round-Up #4, with thanks to all the people that provided feedback and made it happening last month. And special thanks yet again to the people of LinuxMAO. If there would only exist a decent translator from French to English then everyone could benefit from their massive and impressive work. Best, Jeremy

14 years, 1 month

Some fun with MonoSynth

by Ken Restivo

A short little improv using Calf MonoSynth and Calf Vintage Delay tape echo: http://www.restivo.org/blog/podpress_trac/web/527/0/monosynthfun2-withb3.ogg (also Rhodes via fluidsynth, and a little Beatrix too, but mostly MonoSynth) The performance ain't so great; I'm trying to learn how to cope with chord changes, but, alas, my timing falls to crap when I do that. Onward and upward. -ken

14 years, 1 month

Music made with linux: Or how an infinite number of monkeys came up with this.

by Andrew C

Hey all, Here are two compositions of mine, orchestral shenanigans and such. My time could probably be better spent learning more orchestration and general music theory, but I like to experiment either way! http://countfuzzball.webs.com/Emailed/Adventa.mp3 http://countfuzzball.webs.com/Emailed/Infinity.mp3 Used Rosegarden for sequencing, linuxsampler for the various sample libraries and Bristol for the vibrato heavy synth. I hope you enjoy! Andrew.

14 years, 1 month

OT: 19Hz considered not spooky

by Burkhard Wölfel

Good morning LAU, as Cory Doctorow writes on Boingboing, John Huntington and his friends "created a spook-house with a double-blind randomized infrasound generator and used surveys to check for a correlation between infrasound and creepy feelings. John exhaustively documented the experimental setup (and the setbacks encountered in getting things up and running), and the results. Spoiler alert: they didn't find a correlation." http://www.boingboing.net/2010/11/08/testing-infrasound-t.html Have a nice day, - Burkhard

14 years, 1 month

In Search of The Unicorn

by Ken Restivo

A mythical beast, rumored to exist, but never actually seen. Others have tried, but failed, to locate it. I now join the search. This beast is: 1) USB 1.0 "class compliant"-- NOT USB 2.0 -- and thus works with Linux 2) Is well and truly supported by ALSA. 3) Has FOUR outputs and 2-4 inputs, all usable from within JACK, with good professional quality DAC/ADCs. 4) The outputs and inputs are balanced and applicable for low or high impedance (probably with a switch), and have TRS 1/4" jacks or XLR or both. 5) Does not cost an arm and a leg. This does not mean the FastTrack Pro! Sure it SAYS it has 4 channels, but only two are accessible from JACK. I have one and have used it for years, but I now need more outputs. And, also, the output of the "other" 4 channels is just RCAs. I need 4 channels output, USB1.0, 44.1Khz/24bit. I could use a cheap 5:1 home-theater USB fob type interface, but the sound quality would probably suck, and it sure won't give me balanced outs. Does this Unicorn exist? Anyone seen one? -ken

14 years, 1 month

DJ-ing hardware and software

by andy baxter

Hi all, A friend of mine has asked me for advice on setting up her linux laptop to do live dj-ing. She wants a sound card with at least 2 stereo outputs (one to play and one to listen to the next track), and some advice on what software is good for this and how best to set it up. She is running ubuntu 10.10. She lives in a different town and doesn't come up here much so I want to keep things as simple as possible so she can set it all up herself. Does anyone have any suggestions for a suitable usb sound card? I have told her about TerminatorX, but any other suggestions for DJ software would be helpful. Thanks, andy

14 years, 1 month

rakarrack-0.6.1 is released

by Josep Andreu

Hi We have the pleasure to announce the release of rakarrack 0.6.1 Rakarrack is a richly featured multi-effects processor emulating a guitar effects pedalboard. Effects include compressor, expander, noise gate, graphic equalizer, parametric equalizer, exciter, shuffle, convolotron, valve, flanger, dual flange, chorus, musicaldelay, arpie, echo with reverse playback, musical delay, reverb, digital phaser, analogic phaser, synthfilter, varyband, ring, wah-wah, alien-wah, mutromojo, harmonizer, looper and four flexible distortion modules including sub-octave modulation and dirty octave up. Most of the effects engine is built from modules found in the excellent software synthesizer ZynAddSubFX. Presets and user interface are optimized for guitar, but Rakarrack processes signals in stereo while it does not apply internal band-limiting filtering, and thus is well suited to all musical instruments and vocals. Rakarrack is designed for Linux distributions with Jack Audio Connection Kit. New Effects: ------------------------------------------------------------ - OpticalTrem : Tremolo - Vibe : Vibe - CompBand : Four Band Compressor - StereoHarm : Stereo Harmonizer New LFO types: ------------------------------------------------------------- - Sample & Hold - Lorentz Fractal XY New Additions: ------------------------------------------------------------- - Metronome - +10 dB booster - Add/Delete Internal Effect Presets, that can also shared/merged with other users. - Drag & Drop effects in main screen to fast reorder. - Fast MIDI learn assign with right click in each parameter. - Hide Function for unused effects. - Random preset generator. - Drag and Drop presets in bank window to fast swap. - Extra1 Preset bank. - User directory, a place to put your preset banks in order to be accessible by a single click. - Optimized filters and Trigger for recognition note frequency. - MIDI Program Change Table, that can be save/load. - Shortcuts. Improvements: --------------------------------------------------------------- - Looper, adds metronome and possibility to sync with jack transport and Tap Tempo. - Compressor (Final Limiter) - MIDI Converter octave changer. - Tap Tempo can be set in main screen. - Speed up the preset change process. - Upsample x7,x8,x9,x10,x11,x12 (hope you have a fast computer :-)) - RBFilter "Q" modes. - Effects that depends of internal preset selected (MuTroMojo, WahWah) now display the original internal preset. Bug fixes .... and new bugs :-) Thanks The rakarrack Team. -- Josep Andreu <holborn(a)telefonica.net>

14 years, 1 month

Ecasound and jack.plumbing don't play well (j.p dies)

by Joel Roth

Hello list, I've been experimenting with using jack.plumbing instead of jack_connect to make connections for Nama/Ecasound. As I understand it, Ecasound behaves differently than most other JACK clients. Ecasound registers its ports with JACK when the engine is launched, and de-registers its ports when the engine is disconnected. Nama configures Ecasound by writing a chain setup, loading it, (re)writing the .jack.plumbing config file, and allowing time for jack.plumbing to connect the desired ports. However if jack.plumbing happens to poll while ecasound is not connected to jack, j.p dies with errors. Connect: 'system:capture_1' -> 'ecasound:brass_in_1'. jack_connect() failed: 'system:capture_1' -> 'ecasound:brass_in_1' Jackd reports: Cannot connect ports owned by inactive clients: "ecasound" is not active I've found that rapidly connecting and disconnecting ecasound is a reliable way to kill jack.plumbing. I am trying to work around this by killing and restarting jack.plumbing each time Nama reconfigures Ecasound, however my code's still not reliable. It would be nice if jack.plumbing could handle Ecasound's routine behaviors more robustly. Although ignorant about many things JACKish, I would expect that it's fair for a JACK client manage its ports as allowed under JACK's API. I'd appreciate any suggestions, as I'm about at the end of rope (at least without plunging into jack.plumbing and Ecasound's sources.) Regards, Joel -- Joel Roth

14 years, 1 month

Music made with linux: Modlys - uden dig (dub remix)

by Atte André Jensen

Hi I've done another remix of one of my old tunes, "uden dig" from the rpm2010 album "flow". http://music.modlys.dk/track/uden-dig-dub-remix Enjoy! -- Atte http://atte.dk http://modlys.dk

14 years, 1 month

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Linux-audio-user November 2010