Linux-audio-user March 2011

linux-audio-user@lists.linuxaudio.org

128 participants
106 discussions

[LAU] <= 500 euro linux/barebones laptops for audio?

by Andrew C

Greetings all, I'm planning on ordering a laptop this weekend for writing music and such while away from my desktop. Now, while I'm budgeting for around about 500 euro, my gut tells me that I won't be getting fantastic hardware for that money. "But wait Andrew! We don't know what you'll be using this for!" I hear you say, so I'll just quickly outline what I plan on doing: In short, I don't need a tremendously amazing audio card, with high quality mic preamps coming out its wazoo, as I'll be working exclusively in the digital domain (linuxsampler/bristol/zyn/yoshimi/ams) via an externel midi controller. In addition to that, I'd rather not have a windows OS pre-installed on it, but rather it be powered by linux from the get go (ideally) or just a hunk of pre-assembled hardware. RAM I guess is a moot point, the more the better.... but 1GB would be a minimum.. Should I provide more info, or is what I'm asking outside the range of what's commercially available? (I dread the thought of having to build a laptop from scratch, to be perfectly honest) Andrew.

14 years, 11 months

[LAU] stalling/freezing eee900

by Atte André Jensen

Hi I have inherited an old eee900. It needs a new battery, but with that I hope to use it for synth engine (like Ken Restivo) and more. However, before I get a new battery, there's a problem that I hope some here could help with. Every once in a while it's like X kind-of stalls or freezes for 10-20 seconds or so. If it's generating audio I seem to remember that that's not being interrupted in any ways. It's like it's waiting for a slow disk or something. It's now running arch, but I had various ubuntus running on it before, and I seem to remember that it's always behaved like that. Any clues what this could be or how to approach the problem. Can you recognize this from your eee, Ken? -- Atte http://atte.dk http://modlys.dk

14 years, 11 months

Re: [LAU] stalling/freezing eee900

by Atte André Jensen

On 03/24/2011 10:21 AM, Nick Copeland wrote: > Have you had a look at name resolution? Put files before DNS in your nss > switch and make sure your IP addresses are listed in the hosts file, it > might have issues to resolve itself every now and then. > > Long shot, one of many things to look at. Will have a look. But since other laptops running either arch or ubuntu never showed this problem and all are setup/maintained at me + I don't recall having "done anything" about this on any of the other laptops, it seems unlikely. But thanks anyways, any input is appreciated, really! -- Atte http://atte.dk http://modlys.dk

14 years, 11 months

[LAU] naspro ladspa-lv2 bridge

by andy baxter

Has anyone had any luck installing the naspro ladspa-lv2 bridge? (http://naspro.atheme.org/naspro-bridges/installation) I'm trying to set it up so I can use LADPSA plugins with ingen. I have downloaded and installed the 3 parts of naspro you need (core, 'bridge it', and bridges). Have also tried to install the dynamic manifest lv2 plugin (http://lv2plug.in/ns/ext/dyn-manifest/), but had some problems with installation of this and had to copy the files manually. (It looks like the files are correct, but the makefile hasn't been updated to reflect a name change.) When I run lv2_list, I get this error at the beginning: andy@monkey:~$ lv2_list ERROR: slv2_world_load_dyn_manifest: Failed to open dynamic manifest library `/usr/local/lib/lv2/naspro-ladspa.lv2/ladspa.so' http://drobilla.net/plugins/dirg http://drobilla.net/plugins/float I've also had problems with the swh lv2 plugins - they seem to compile and install ok but aren't picked up by ingen or lv2_list. Does anyone have any idea what is worth trying next. I would really like to get this working so I can get going with ingen - it looks like a great program but the range of lv2 plugins is a bit limited. cheers, andy baxter

14 years, 11 months

[LAU] audio latency question

by andy baxter

Hi, I am thinking about a possible design for the second version of the position sensing drum pad I have been working on, and I have a question about latency. I am working around the assumption that 10ms latency is about the worst it can get before people start to notice it in practice, so I am thinking of building the pad in a way where the normal latency is about 1ms, but it degrades to between 10-15 ms in the very worst case (many simultaneous strikes and pressure variations across the pad). Allowing this level of degradation would make it possible (I think) to use an arduino rather than a faster processor, which would be nice. So the question is, where does this 10ms figure come from, and is it a reasonable working value? I have picked it up somewhere but I'm not exactly sure where. Thanks for any replies. andy

14 years, 11 months

[LAU] dir2hydrogen

by Peter Geirnaert

Hi Inspired by my own dir2tap Tapeutape kit builder<https://sites.google.com/site/experimentalfrush/installed-apps/tapeutape>, I also made a little Hydrogen folder importer<https://sites.google.com/site/experimentalfrush/installed-apps/dir2hydrogen> . dir2hydrogen doesn't do automatic ID assigning like dir2tap does, but it's already a handy tool for what it is. *Usage*: dir2hydrogen /path/to/dir * Installation*: copy dir2hydrogen<https://sites.google.com/site/experimentalfrush/installed-apps/dir2hydrogen…>into a folder that is in your PATH. (Type echo $PATH in a terminal to find the suitable directories). *Tip*: You can edit the preferences in your filebrowser, for inode/folder so that rightclicking on a folder shows a menu entry to open that folder with dir2hydrogen. This way you can easily make Hydrogen presets from a folder. Have a nice day Peter

14 years, 11 months

[LAU] tapeutape kitbuilder updated

by Peter Geirnaert

Hi all, Thanks for the nice replies regarding my first perl program :) I don't have a www connection at home now, so sorry for the late reply. I modified my first version a bit and also made a second version with a different usage. Now I have listdir<https://sites.google.com/site/experimentalfrush/installed-apps/tapeutape/li…>which should be copied to the directory containing the samples. Run it from there. https://sites.google.com/site/experimentalfrush/installed-apps/tapeutape/li… The other version is dir2tap<https://sites.google.com/site/experimentalfrush/installed-apps/tapeutape/di…>which should be placed in your tapeutape preset folder and has usage like this: dir2tap /path/to/dir. It then saves thisfolder.tap into the folder where it was executed from. https://sites.google.com/site/experimentalfrush/installed-apps/tapeutape/di… Now by default the minnote, maxnote and rootnote value are rising from 0 to 127. If you need to load more that 128 wavfiles, replace the ==note== variable in the source to a default numeric value between 0 and 127. Also, each Instrument now gets the name of its loaded .wav file. Editing this will be less work than editing "new instrument". Renato wrote: > 1) save to "currentdir".tap instead of thisdirectory.tap. I.e. if I run > the script in the directory drum_machine I should end up with > drum_machine.tap I suppose that's a name that needs to be given only once, so give the name you choose when you edited thisfolder.tap with Tapeutape itself. Thanks for the request anyway, I'll see how to implement that. > 2) assign midi notes, with a range of 2-3 notes for each (for drums I > think that's enough?) Now the range is just one note, this way I also make sure no more than 128 files are loaded at once, because if note="129" is written in the .tap file, it crashes Tapeutape when you click on that instrument. It's possible to assign a note range to each sample, but that would take 3 extra variables: the min note, max note and total number of files loaded for the check. This is another good feature request, useful for Florent too I guess. Have a nice day. Peter

14 years, 11 months

[LAU] announce list doesn't send out my announcement

by Lieven Moors

Hi everyone, Last week, I tried to make an announcement by sending it to linux-audio-announce(a)lists.linuxaudio.org But somehow my message is not getting through. Does anyone know what the problem could be? My mail client is mutt, and is configured for gmail with imap. Greetings, lievenmoors

14 years, 11 months

[LAU] Sub-Harmonic Synthesizer?

by Josh Lawrence

Hi all, This past week I attending a concert of an acappella vocal group that would using a DBX-120A sub-harmonic synthesizer to double the bass singer's voice. It sounded amazing, and a little Googling has revealed that this rackmount unit is quite popular. Is there anything in the Linux world that does the same thing? I am not a programmer, so it would need to be somewhat easy-to-use (trying to fend off the "just make one in puredata!!!" comments here :), lv2 would be awesome too. Thanks, Josh -- Josh Lawrence www.hardbop200.com

14 years, 11 months

[LAU] Csound Conference 2011 - Call for Papers, Call for Music

by joachim heintz

Ways Ahead First International Csound Conference September 30 - October 2 2011, HMTM Hannover, Germany Incontri, the Institute for new music at the University of Music, Drama and Media Hannover, is proud to host the first International Csound Conference. Csound, more than 25 years after its creation, has changed in many ways during the years, and so has the situation of computer music in general. What is the role of Csound in current electronic music practice, teaching and learning? What are the challenges, potentials, and perspectives of the ways ahead? This meeting looks to provide discussion between developers and users, and to show aspects of the Csound Language in papers, workshops, installations, and a concert. CALL FOR PAPERS As this conference is mainly focused on the present situation and further development of Csound, papers which discuss this topic in regard to the technology, the community, the documentation or the ways of learning, are mostly welcome. But you are also encouraged to send any paper which deals with any Csound related content. Papers should be about 4-8 pages. Please use the templates found here: http://www.incontri.hmtm-hannover.de/uploads/media/CsoundConfTemplates.zip Please upload your paper at www.easychair.org/account/signin.cgi?conf=csndc2011 . If you have no easychair account, you will be asked to create one first. Paper draft submission: June 15 Notification of acceptance: July 15 Final Paper submission: September 1 CALL FOR WORKSHOPS Please describe the topic on which you like to hold a workshop, and what you need (time frame, technics, optimal number of participants, etc). Please upload your description in html format at www.easychair.org/account/signin.cgi?conf=csndc2011 . If you have no easychair account, you will be asked to create one first. Workshop draft submission: June 15 Notification of acceptance: July 15 CALL FOR MUSIC There will be a concert on october 1st with pieces which were made mainly with Csound, either fixed media or with live electronics (maximum eight speakers). In addition, sound installations can be performed during the conference in the foyer of the HMTMH. Please send your suggestions by ordinary mail to Joachim Heintz, HMTM Hannover, Emmichplatz 1, D-30175 Hannover. Each submission must contain: 1. A CD or DVD with the files to be played at the conference (aiff or wav). 2. A CD with a stereo mixdown of your work. 3. A short presentation of the piece. 4. A short biography of the creator(s). 5. A signed copy of - http://www.incontri.hmtm-hannover.de/uploads/media/ConcertAgreement.pdf or - http://www.incontri.hmtm-hannover.de/uploads/media/InstallationAgreement.pdf in which the creator(s) agree(s) to the condition for the concert/installation. Our abilities to perform Videos are rather poor; so if you submit works containing images you must accept compromises in performing them. Submission deadline: July 1 Notification of acceptance: August 1 The Csound Conference is held by Incontri, the electronic studio in the institute for new music at HMTM Hannover, Germany, in cooperation with the institute of journalism and communication research, with kind support from the following institutions: Deutsche Gesellschaft fuer elektroakustische Musik, Germany Berklee College of Music, Boston, USA National University of Ireland in Maynooth, Ireland Norwegian University of Science and Technology in Trondheim, Norway University of Bath, UK www.incontri.hmtm-hannover.de/de/elektronisches-studio/csound-conference

14 years, 11 months

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Linux-audio-user March 2011