Linux-audio-dev July 2007

linux-audio-dev@lists.linuxaudio.org

65 participants
39 discussions

No Timidity Development for the last 3 years

by Carlo Florendo

Hi, Does anyone know the status of Timidity's development aside from the one posted on its sourceforge website (timidity.sourceforge.net)? The Japan URL, timidity.jp seems to be down as well for the longest time I could think of. In any case, it's still great software and I use it a lot (and will most definitely continue to use it for some time). Is the project (almost) dead? Where could we see traces of its life? Thank you very much. Best Regards, Carlo -- Carlo Florendo Softare Engineer/Network Co-Administrator Astra Philippines Inc. UP-Ayala Technopark, Diliman 1101, Quezon City Philippines http://www.astra.ph -- The Astra Group of Companies 5-3-11 Sekido, Tama City Tokyo 206-0011, Japan http://www.astra.co.jp

17 years, 3 months

new lossless/lossy audio compressor

by Gregory Alan Hildstrom

Hello. I just finished writing and documenting a new lossless and lossy audio codec called j2kaudio. It uses the wavelet compression in JPEG 2000 to transcode audio wav data to and from j2a files. I have not written any sort of media player plugin yet; more testing and file format refinement are necessary first. I tested with 44100Hz, 16-bit, stereo CD-quality wav files, but it also supports other sample rates, precisions, and channel numbers. I tested against flac, lpac, shorten, and monkey's audio for lossless encoding. j2kaudio beat the nearest competition by over 10%. If anyone is motivated to test some additional songs, provide me with additional test data, or suggest another untested codec, please let me know. http://geocities.com/hildstrom/projects/j2kaudio/index.html Let me know what you think. Thanks. -Greg Gregory Alan Hildstrom Secure Systems Engineer - Trusted Computer Solutions trustedcs.com ghildstrom(a)trustedcs.com Software Engineer - Hildstrom Engineering geocities.com/hildstrom hildstrom(a)yahoo.com Mobile:(210)413-6082 Fax:(210)599-0469 Office:(210)340-3151x117

17 years, 4 months

intergrating osc

by Patrick Shirkey

Hi, Any pointers on where to start for integrating osc compatibility into jackEQ? Cheers. -- Patrick Shirkey - Boost Hardware Ltd. Http://www.boosthardware.com Http://lau.linuxaudio.org - The Linux Audio Users guide ======================================== "Anything your mind can see you can manifest physically, then it will become reality" - Macka B

17 years, 4 months

Ardour session archiver (Was: new lossless/lossy audio compressor)

by Marc-Olivier Barre

On 7/25/07, Paul Winkler <pw_lists(a)slinkp.com> wrote: > Pretty cool. Does JPEG 2000 handle float data? > > I'd love to be able to write an archive script for Ardour sessions > that compresses the audio data losslessly, but FLAC won't do it. I been thinking of the same thing... can't ardour handle FLAC files natively ? a simple script in <you-name-it> language calling flac to to compress the audio and change the session file to match the new names should work I think. Thoughts anyone ? __________________ Marc-Olivier Barre.

17 years, 4 months

ReplyTo munging (Was: What hardware is actually used by freebob/ffado users?)

by Marc-Olivier Barre

On 7/31/07, Thomas Vecchione <seablaede(a)gmail.com> wrote: > Dang it, I apologize to the list, I forgot this list DOES reply to the list > when I hit reply, and nto reply to all. > > Seablade I must admit this is a issue I wanted to raise for a while now... For those of you who haven't heard, there has been a very long debate on whether replyto munging was or wasn't a god practice. Each side had a reference paper stating a number of pros and cons : - http://www.unicom.com/pw/reply-to-harmful.html - http://marc.merlins.org/netrants/reply-to-useful.html The fight between Simon Hill and Chip Rosenthal finaly ended in 2001 when a new RFC obsoleting RFC 822 appeared, RFC2822. Here's a paper from Neale Pickett stating the final story : http://woozle.org/~neale/papers/reply-to-still-harmful I strongly consider turning munging off on LAD and LAU. I know this might start some flames, but isn't it good free software philosophy to stick to the standards, especially when it comes to a recently reviewed RFC ? If someone can give me an argument that is not present in the 3 previously linked documents stating why we need to munge our headers, I'll turn munging off next week. Regards, __________________ Marc-Olivier Barre. Your favorite list administrator :-)

17 years, 4 months

JACK support for xwax

by Patrick Shirkey

Hi, I spent some time today integrating jack support into xwax. I have it registering and creating ports but xwax uses file descriptors for it's i/o's and I'm not sure about the best method to integrate the jack callback system into that. Any pointers for seperating the i/o's from the processing engine so that we can keep alsa/oss support and also have jack too? Cheers. -- Patrick Shirkey - Boost Hardware Ltd. Http://www.boosthardware.com Http://lau.linuxaudio.org - The Linux Audio Users guide ======================================== "Anything your mind can see you can manifest physically, then it will become reality" - Macka B

17 years, 4 months

What hardware is actually used by freebob/ffado users?

by Pieter Palmers

[Appologies for the cross-posting] [Please DON'T use reply-to-all to reply on this email] Hi all, With this I'm hoping to gather some data that can help us in convincing the firewire device manufacturers that we are of some significance to their sales (I'm actually wondering if we are...). So I would like to ask everyone on these lists that has/considers/considered purchasing a firewire audio device if they would be so kind as to answer the following questionnaire. ** Those that have bought one or more firewire devices... * can you provide which device(s), preferably with their GUID (can be found out using gscanbus or sometimes on the device itself) * Do they work with linux? ** Those that considered buying a firewire device: * What device(s) did you consider buying? * What device did you go for in the end (if applicable)? * To what extent was the lack of Linux support a determining factor in your decision? ** Those that consider buying a firewire device: * What device(s) are you consider buying? * How important is Linux support for you? ** any comments? It would be nice if you would reply to this email with the answers inlined with the questions. Please don't reply-to-all but reply to pieterp(a)joow.be in order not to spam the mailing list with these answers. It would also be nice if you left the subject line intact such that I can auto-filter these messages. Again, sorry to bother you guys with this, but it's a bit difficult to convince manufacturers without some decent data. Thanks, Pieter Palmers ffado.org PS: If you know other freebob/ffado users that are not subscribed to these list please pass this mail on.

17 years, 4 months

swh plugins problem/addition

by Georg Holzmann

Hallo Steve, list ! I just noticed, that the "triple band parametric with shelves" LADSPA plugin generates a DC offset (tried version 0.4.15 and 0.4.14). The offset is not always the same: first when I create the plugin, there is no offset. Then I pressed play/stop (in ardour) and the DC offset was here - also the amount of the offset is somehow changing when I play with different parameters (but I did not find out a real correspondens). However, when I use the "Single band parametric" and the shelves alone I don't get an offest (which should be the same code ?). I also made some other small additions to your plugin collection: - single low and high shelving filters (see attached files): they are the same code as in "triple band parametric with shelves", because I often need only a single shelving filter - in the "single band parametric" the slider to change the frequency was linear, I changed this to logarithmic (file attached) Maybe you could include those plugins/changes in your collection, at least for me they are quite usefull. LG Georg

17 years, 4 months

jack_transport question

by Julien Claassen

Hi! I just tried to hack the small beginnings of basic jack_transport support in a midi-sequencer. All it should be capable of is jack_transport_start and stop. I just opened a client (jack_client_open(package,JackNullOption,&status), where status of of jack_status_t. and called jack_transport_locate(client,0) and jack_transport_start(client), before starting the midi-playback and when finished called jack_transport_close(client); Only it won't even locate me to 0, it somehow fails there. Is there anything special I have to consider? any special jack_function, subscribing me elsewhere, opening a seperate thread? Please, does anyone have any ideas on this? Kindest regards Julien -------- Music was my first love and it will be my last (John Miles) ======== FIND MY WEB-PROJECT AT: ======== http://ltsb.sourceforge.net the Linux TextBased Studio guide ======= AND MY PERSONAL PAGES AT: ======= http://www.juliencoder.de

17 years, 4 months

[IGNORE] Message for Ben Loftis

by Fons Adriaensen

Hi Ben, I tried to respond to your message, but there seems to be a problem: ben(a)glw.com Delay reason: Connection reset by peer: smtp.glw.com [66.222.83.247] This has been repeated a number of times now. To answer you question, when using floating point it doesn't make a difference if all signals are at around -40 dB. The ratios will be the same. Ciao, -- FA Follie! Follie! Delirio vano è questo !

17 years, 4 months

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Linux-audio-dev July 2007