Linux-audio-user October 2002

linux-audio-user@lists.linuxaudio.org

83 participants
67 discussions

[linux-audio-user] cant record sounds...

by Christoph Rupp

Hi, i guess it's just a small thing but i don't find a solution. I try to record sound using sox/rec or gnome record (grecord) but all i get is noise; sometimes i can recognize the melody (i have attached a portable CD player to line-in), but most of it is just noise. The volume of line-in is set to 90, recording of line-in is switched on, and i can hear the sound of the CD player when line-in is not set to 'mute' (it's played in good quality, without noise). I have tried all different settings in grecord but it doesn't get better. What else can i do?? I have a VIA 686 on-board sound chip, no ALSA drivers, just OSS (as far as i know...). Linux 2.4.10 (SuSE 7.3). Thanks a lot... Chris ===== http://www.crupp.de __________________________________________________ Do you Yahoo!? Y! Web Hosting - Let the expert host your web site http://webhosting.yahoo.com/

21 years, 6 months

[linux-audio-user] Re: [linux-audio-dev] Free Publicity - DJCJ Linux Audio Developers Tech Support Database.

by Patrick Shirkey

Steve Harris wrote: > On Sun, Oct 27, 2002 at 04:28:59 +0900, Patrick Shirkey wrote: > >>Thanks for the feedback. >> >> >>>Its quite hard to read becaues of the gifanims. the one in the top >> >>left >is hard to make out and the page it links to is very out of date. >> >>It's about due for a redo anyway. The info is still pretty vital. Notice >>that there have been almost no questions about how fast Linux latency is >>since it was put up. > > > Thats true, but a text link would be easier to spot and less distracting. > But IMO more boring to look at from a newbie POV. I will give that gif a make over this week. I'm getting tired of seeing it these days but the info is still vital. > >>>The logos along the top are all in clashing styles and many of them are >>>aliased. >> >>I cannot do much about the images provided by other sites. > > > Well, generally they have large, high res ones that you could recomposit > to suit the site. You could also put them out of the way somewhere. > The aim of the images at the top is to provide one click access to the most popular sites for information about Linux audio. I really don't want to move them. They could do with being slightly smaller perhaps. > >>>There are a few too may colours, and mixing red and blue is generally >bad >> >>As in the NZ, Australian, British, French and US flags? > > > Yes, but I dont read flags ;) > > >>>On my browser there is a mixture of 2 and 3 coloumn layouts which >> >>makes >it very wide and hard to follow. >> >>What is your browser? I have been trying to keep it working with >>netscape 4.x, mozilla, IE, lynx. > > > Mozilla. But my screen at home is only 1024 pixels wide. > Same here. > >>>Lots of the information on the frontpage should probably be on >subpages. >> >>The aim is to provide access to most of the info with one click and >>without having to scroll. > > > But that doesn't help if you cant find the right link, and all the > important information is 4 pages down. > I don't follow this. What information is four pages down? Do you mean the introduction for new users or are you talking about the links to the various howtos? > Can I suggest you break the site up into major sections, that way people > can go to the right section for them. > I've been considering that for a while now. I'm trying to figure out a nice design. Currently I have an image of a large asterix * with the links in each slice. > You could always open up to design suggestions from the lists, that way > you get to choose from lots of desigs without having to make them all > yourself ;) > That's true. It is becoming more of a community property these days. Does anyone else have any suggestions. Keeping in mind that the site is primarily for new users most of whom expect a graphically dense site at least until they get into the Linux way. -- Patrick Shirkey - Boost Hardware Ltd. For the discerning hardware connoisseur Http://www.boosthardware.com Http://www.djcj.org - The Linux Audio Users guide ======================================== "Um...symbol_get and symbol_put... They're kindof like does anyone remember like get_symbol and put_symbol I think we used to have..." - Rusty Russell in his talk on the module subsystem

21 years, 6 months

[linux-audio-user] linux/ xbox/ audio??

by matthew yee-king

I've just seen that linux is gettting quite advanced on the xbox... It occurred to me that these boxes might make nifty little DAWs. They look quite rugged and you could fit one in your bag. There isn't any information on this site: http://xbox-linux.sourceforge.net/ regarding audio drivers heres some general xbox info i found: http://www.vanshardware.com/articles/2001/november/011116_Xbox/011116_Xbox.… no specifics on audio there either... anyone know any more? - matthew

21 years, 6 months

[linux-audio-user] Meterbridge 0.0.6

by Steve Harris

http://plugin.org.uk/meterbridge/ Added a correlation meter to the JellyFish, thanks to Ari Kauppi for pointing me to the maths. Its calculated using the non-parametric correlation function Tau, incase anyone cares. Changed the default meter type to PPM. Also added a simple osciloscope display. Hopefully this will be the last release for a while (unless there are any bugfixes). - Steve

21 years, 6 months

[linux-audio-user] Re: [linux-audio-dev] Soundcard spotting

by Kai Vehmanen

On Tue, 22 Oct 2002, Peter L Jones wrote: >>> * MidiMan Delta Audiophile 2496 (Envy24) >>> * Creative SB PCI 128 (ES1371) >> I've used both of these extensively with JACK and numerous other ALSA apps >> and they work really well (full-duplex, low-latency use). Other > Heh. Now, one of these I have in my machine ((PII vintage) Celeron 400) > already. The other would set me back £150. Your comment makes me think > there's little to choose between them. So, simply upgrading my soundcard > from a £15 low end consumer-oriented unit to something costing 10 times the > price looks like getting me nothing. Or am I missing something? :-( Well, yes. ES1371 brings you 2ch in+out with max 48000Hz sampling rate, and 16bit sample resolution. Midiman 2496 on the other hands provides up to 96kHz sampling rate, 24bit sample resolution, 2ch in+out and digital in+out. Check the specs from manufacturer's site. And btw, I confused Audiophile with Delta44 (which I have, has 4ins + 4outs, no digital in/out). Both are based on the envy24 chipset, should perform equally well. Please, correct me if I'm wrong. >> - GUS MAX (this very, very old ISA-card can still beat a number of >> today's crappy chipsets... I don't know whether to cry or laugh ;)) > I noticed that the ENS1371 seems to have a better rating on one site I looked > than to EMU10K, so this doesn't surprise me! Yup, I'll probably never get tired of the following slogan: "sb128 (ens1371) is the best creative card as it's the one they didn't make themselves". :) Ok, maybe the current SB cards are better, but I'll never forgive the company the disappointment their AWE64Gold caused me. Such waste of money! ;) >> All in all, most of the PCI-cards supported by ALSA have fairly good >> drivers. > But how do I compare one card with another? What should I be looking for? > How can I tell which will reduce the load on my computer and which will > increase the load? Is there any difference? Well, it depends on what you want to do. How many channels you need in and/or out, do you need high-quality recording, do you need digital ins/out, do you need hardware support for multi-open, etc, etc? I'm not a hardware expert so I can't answer to all these questions, but I can tell about the criteria I used when I selected my last card. My primary use is multitrack recording and mixing. I needed capability to record >2 channels, high-quality a/d and good support for low-latency and full-duplex. My choice was midiman delta44. It has 4 ins, an external a/d&a/d box (important for high-quality conversion), good ALSA drivers and wasn't too expensive (ie. a lot cheaper that the RME cards for instance). So far I've been very satisfied with this purchace. PS Let's cross-post to linux-audio-user. That and alsa-user are probably the best forums for this discussion. -- http://www.eca.cx Audio software for Linux!

21 years, 6 months

[linux-audio-user] routing oss midi to second alsa midi port

by Olivier

Hi all, I'm trying to get the oss midi port emulation to use the second alsa midi port, and I guessed that must be possible with the .asoundrc, module parameters or some other configuration. But I cannot find how, does anyone have an example? thanks, Olivier

21 years, 6 months

[linux-audio-user] DJCJ Linux Audio Developers Tech Support database.

by Patrick Shirkey

I'm pleased to anounce that a database for people willing to provide Tech Suppport to their local community has been setup. The service is free of charge and hosted at http://www.djcj.org/ The purpose of this database is to promote the professional arm of the Linux Audio Developers community. It is intended to be of use to potential clients who may be interested in getting a Linux Audio system working but don't have the time or background knowledge to do the installation or system maintainance? The people and businesses presented in the database are not endorsed or guaranteed by DJCJ.org but they are active members of the Linux Audio Community. Payment for services received is encouraged. Rates are decided by the parties involved. This is intended to be a database for professional tech support. Please let people know about it so that we can show the world we are more than just a bunch of amateurs hacking in our spare time. The database currently provides a very simple interface for adding your contact details and there is also a contact form provided for potential clients to easily get hold of you. Special thanks to Steve Harris and Antti Boman for assistance with the internal code. It is guaranteed that the interface will become much more user configurable over time. Any feedback is welcome and appreciated. -- Patrick Shirkey - Boost Hardware Ltd. For the discerning hardware connoisseur Http://www.boosthardware.com Http://www.djcj.org - The Linux Audio Users guide ======================================== "Um...symbol_get and symbol_put... They're kindof like does anyone remember like get_symbol and put_symbol I think we used to have..." - Rusty Russell in his talk on the module subsystem

21 years, 6 months

[linux-audio-user] Sweep 0.5.9 -- Scrubby Speex!

by Conrad Parker

Sweep 0.5.9 Development Release ------------------------------- Sweep is an audio editor and live playback tool for GNU/Linux, BSD and compatible systems. It supports many music and voice formats including WAV, AIFF, Ogg Vorbis, Speex and MP3, with multichannel editing and LADSPA effects plugins. Inside lives a pesky little virtual stylus called Scrubby who enjoys mixing around in your files. This development release is available as a source tarball at: http://prdownloads.sourceforge.net/sweep/sweep-0.5.9.tar.gz?download Sweep now supports Speex, a special purpose speech codec designed for efficient Voice over IP (VoIP) and file-based compression. Speex is free, open and unpatented; more information is available at http://www.speex.org/. This release also includes improved handling of the main volume and pitch controls, contributed by Zenaan Harkness. Screenshots: http://www.metadecks.org/software/sweep/screenshots/ Audio demos: http://www.metadecks.org/software/sweep/demos.html Sweep is designed to be intuitive and to give you full control. It includes almost everything you would expect in a sample editor, and then some: * precise, vinyl like scrubbing * looped, reverse, and pitch-controlled playback * playback mixing of unlimited independent tracks * looped and reverse recording * internationalisation * multichannel and 32 bit floating point PCM file support * support for Ogg Vorbis, MP3 and Speex compressed audio files * LADSPA 1.1 effects support * multiple views, discontinuous selections * easy keybindings, mouse wheel zooming * unlimited undo/redo with fully revertible edit history * multithreaded background processing * shaded peak/mean waveform rendering, multiple colour schemes Sweep is Free Software, available under the GNU General Public License. More information is available at: http://www.metadecks.org/software/sweep/ Thanks to Pixar Animation Studios and CSIRO Australia for supporting the development of this project. enjoy :) Conrad.

21 years, 6 months

RE: [linux-audio-user] changing speed without changing pitch

by Stuart Allie

Thanks Luis, I'll give it a try. And I'll check out the csound list too. Stuart > > Can anybody out there tell me what I (or csound :) did wrong? > > well, i won't try to tell you what might be wrong with your > orchestra, but > if you are interested in time-stretching using csound, try my > instrument > below. with it you can do time-stretch and/or pitch transpose > independently. [snip] > > good luck, > > lj > > (ps. aren't you interested in joining the csound mailing-list?)

21 years, 6 months

RE: [linux-audio-user] changing speed without changing pitch

by Stuart Allie

Hi, I *finally* got around to trying the csound method of changing the speed of an audio file without changing the pitch, but it didn't work for me :( I used the following "orc" file: > sr = 44100 > kr = 4410 > ksmps = 10 > nchnls = 1 > > instr 1 > kfreqscale = 1 > ispecwp = 0 > ktime line 1, p3, 0 > apvl pvoc ktime, kfreqscale, "file.pvc", ispecwp > out apvl > endin and then the "sco" file: > i1 0 12 > e with a 6 second sample, so this should double the audio to 12 seconds. I did the PV analysis like this: > csound -U pvanal -n 1024 -w 4 file.wav file.pvc and then ran csound via: > csound -W -R -d file.orc file.sco -o slow.wav and then I waited for a little while :) When csound was done, the ourput file was, well, interesting... Basically the input file was 6 seconds of single-note guitar playing, and the output was a weird (though not unpleasant :) whooshing-sweeping-phasing sound for 2 seconds, then a faint LFO-type sound to the end of the file. No sign of the original clip, slowed or otherwise. Can anybody out there tell me what I (or csound :) did wrong? Thanks in advance, Stuart

21 years, 6 months

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Linux-audio-user October 2002