Linux-audio-user May 2006

linux-audio-user@lists.linuxaudio.org

184 participants
187 discussions

by Gerrit Niestijl

Hi, I am having some problems connecting my Roland XP-30 synth through the serial port. I can send midi data from the synth to the computer (eg record them with seq24) and i can send midi data from the computer to the synth (eg play the synth with vkeybd). But i as soon as i connect the serial midi input with the serial midi output (the synth has its 'local' set to 'off') and hit a note on the synth there appears to be a feedback loop, because an endless amount of midi notes is being generated, flooding my synth. The serial midi driver is loaded like this: modprobe snd-serial-u16550 port=0x3f8 irq=4 adaptor=4 outs=1 I also tried 'adapter=1' (soundcanvas mode) but with the same result. Am i doing something wrong? Missing something? -- gerrit

18 years, 4 months

[linux-audio-user] Reel to Reel Tape, Speeds and Software Equalisation

by Steve Fosdick

A friend of mine has some old reel-to-reel tapes which we'd like to transfer to CD. Unfortunately most of the material was recorded at 3 3/4 inch/sec or 1 7/8 inch/sec and the only speed my reel to reel machine will do reliably is 7 1/2 inch/sec. I can record the output of the tape machine running at 7 1/2 inch/sec and then use software re-sampling (sox, or sndfile-resample) to get a file that plays at the correct speed but I wonder if I should also be applying some equalisation in software as multi-speed machines usually have different equalisation constants for different speeds. So, does the equalisation compensate for the record process or playback process at a given speed or a combination of both. If it compensating only for playback then I should be OK, otherwise I presumably should be applying extra EQ in software - anyone know how I could calculate what, assuming I have the usual LADSPA plugins at my disposal and that the signal has already been through the playback EQ for 7 1/2 inch/sec? TiA, Steve.

18 years, 4 months

[linux-audio-user] CLAM Music Annotator 0.3.1 released

by Pau Arumi

May 8th 2006, CLAM Music Annotator 0.3.1 released What is the CLAM Music Annotator? --------------------------------- Is an application of the CLAM framework [1] that can be used to visualise, check and modify music information extracted from audio: low level features, note segmentation, chords, structure... The tool is intended to be useful for (though not limited to) the music information retrieval research whenever you need to: - Supervise and correct the results of automated audio feature extraction algorithms - Generate manually edited annotations of audio as training examples or ground truth for those algorithms. You can learn more about Music Annotator in its wiki page, which includes screenshots and videos galleries: http://iua-share.upf.es/wikis/clam/index.php/Music_Annotator The application comes with two example extractors. One that computes low level descriptors and another that performs chord detection. It also features useful views such as the "tonnetz" and "key space" to visualise the tonal features (chords, notes...) CLAM Music Annotator is GPL. What's new from last (0.2) version ? ------------------------------------ This is a major release which have at least duplicated the number of important features. - Ported to Qt4 - New chord extractor - Colourful animated visualisations - Improved application work-flow (project building, etc.) - It also works as a collaborative annotation tool (BOCA client) See the changelog [2] for a complete list of changes. or the wiki [3] for general information. How to install it? ------------------ In Windows we provide a binary installer which includes all the needed libraries (including Qt4) and ready-to-use sample data. For Linux and Mac OSX we don't provide binaries at this moment (though we plan to do in short). Source tarballs can be downloaded from the web and complete build instructions can be found in the INSTALL file. http://clam.iua.upf.edu/download.html Acknowledgements ----------------- This project is partially founded by SIMAC European Project, IST-507142 and Catalunya's Government, exp 200/05 ST The chord extractor extracts segments labeled with chords. It uses Christopher Harte algorithm with some minor variations. It has been developed as a collaboration between the Queen Mary University of London and the Universitat Pompeu Fabra (UPF) of Barcelona. The "keyspace" view is a great contribution of Jordi Bonada and Emilia Gomez, at UPF. The CLAM team Music Tecnology Group Universitat Pompeu Fabra (Barcelona) References: 1. http://clam.iua.upf.edu 2. http://iua-share.upf.es/wikis/clam/index.php/Music_Annotator_Changelog 3. http://iua-share.upf.es/wikis/clam/index.php/Music_Annotator

18 years, 4 months

[linux-audio-user] Apogee Ensemble with Ardour

by Carlo Capocasa

Hi all... After my brief flirt with the Ultra-Low-End I decided it's time to look into something more fun. Following Paul's recommendations I looked into Apogee products and I have to say I like what I see. I want a mobile recording interface with excellent D/A conversion and four Mic pre-amps, preferably in one device. So the Apogee Ensemble looks very good. (Rosetta 800 might also be an option but I don't want to lug a rack to gigs and I'd be happier with a tried-and tested device for the complete analogue signal chain). My goal is ultimately to have an all-MIDI four person band, plus vocals, and do all mixing, synthing and FX processing on x86 CPU. Could I kindly be educated on the linux compatibility of the Ensemble please? Thanks tons. Carlo

18 years, 4 months

[linux-audio-user] Announcing the "KarmaPod"

by David O'Toole

Hey out there LAU-ers, I'd like to make a little announcement for a fun custom hardware box I built specially for PlanetCCRMA, PureData, and Ardour usage. I'm sharing my experiences building and configuring such machines, in the hopes that it will help create a community of people who swap tips and configuration info to help each other be the most productive (and most creative) with their Linux Audio Workstations. More details and photos at http://dto.freeshell.org/notebook/KarmaPod.html -- Dave O'Toole dto(a)gnu.org

18 years, 4 months

[linux-audio-user] Recommendations

by Ian Remmler

Hi, I'd like to get into composition and synthesis, but I am completely new to this stuff. linux-sound.org has lots of pointers, but since I don't have much background it's hard to tell what is worth looking into. A page with example sounds or music from the various packages would be helpful I think. I am not interested in performance so real-time synthesis and instrument input are not necessary. What I would like to be able to do is create "instruments" from samples and/or various synthesis methods (or combinations thereof). I would like the ability to experiment with creating my own synthesizers as well, preferably using some kind of programming language. Then, I'd like to be able to compose music is some kind of sequencer. A "programming language" might even be fine if the syntax is nice. Real-time playback or non-real-time "rendering" of the music would both be fine. Basically I want to dabble with the synthesis/production/composition side of things, rather than performing or playing instruments. Any recommendations on what I should look at would be greatly appreciated. Thanks, - Ian.

18 years, 4 months

Re: [linux-audio-user] USB audio interface - Terratec Phase26 any good?

by Lee A. Azzarello

----- Peter Clarke <pgclarke(a)beeb.net> wrote: > Dear all, > So, it's time to give up on this and get me a USB audio > interface that WILL work. It looks like the Terratec > Phase26 would do what I want quite nicely (except for those > nasty RCA connectors - too unreliable for my liking). Has > anyone used this successfully? I use an Emagic 2|6 with a Pentium 4 laptop for live performance. It works well with jack. I keep the latency at around 20ms because I don't need anything lower for my music. -lee

18 years, 4 months

Re: [linux-audio-user] The MySpace terms for content

by Lee A. Azzarello

----- Rob <lau(a)kudla.org> wrote: > On Sat May 6 2006 20:46, Lee A. Azzarello wrote: > > You missed the part about sublicense: > > "(with the right to sublicense through unlimited levels of > > sublicensees)" > > I don't think the right to sublicense trumps the limitation to > "on and through the Services", but again, I'm no lawyer. > > If it doesn't, then that clause merely exists to cover their > asses when they decide to outsource hosting, management, et al. > to Sites'R'Us in Bangalore. Here's my scenario: Lots of famous bands are on myspace's music section. Let's imagine myspace.com decides to release a compilation album of TV On The Radio[1] and the Yeah Yeah Yeahs[2] along with some other local Brooklyn bands. Because of this license they can release the compilation album and sell it from a "sublicencee" company without notifying the bands who composed or performed the music. They own this product through and through. The bands might not be entitled to a percentage of the profit unless they or their laywers get involved. That's the point. -lee [1] http://www.myspace.com/tvotr [2] http://www.myspace.com/yeahyeahyeahs

18 years, 4 months

[linux-audio-user] music made with linux

by Atte André Jensen

Hi I just finished another piece made with realtime csound and mondrian: http://atte.dk/compositions/#spiders -- peace, love & harmony Atte http://www.atte.dk | quartet: http://www.anagrammer.dk http://www.atte.dk/gps | compositions: http://www.atte.dk/compositions

18 years, 4 months

[linux-audio-user] LAC2006 Photos

by Christoph Eckert

Hi all, I just uploaded some Photos taken during LAC 2006. It one huge tgz archive, no web gallery available. It will be up in 15 minutes: http://christeck.de/stuff/LAC2006.tar.gz To save bandwidth, I scaled them down a bit. If anyone is interested in a particular high resolution image, don't hesitate to send me an e-mail. Any further resources? Best regards ce

18 years, 4 months

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Linux-audio-user May 2006