Linux-audio-user December 2004

linux-audio-user@lists.linuxaudio.org

186 participants
209 discussions

[linux-audio-user] Re: Three interesting articles

by Juhana Sadeharju

>From: Ryan Gallagher <ruinaudio(a)comcast.net> > >These really helped clear up some concepts in digital audio for me... >one being "dithering". I really had no idea wordlength was such an >important issue, guess it applies even to changes in volume! http://www.jamminpower.com/PDF/Whither%20Dither.pdf One could also search papers from persons such as Stanley P. Lipshitz and Robert A. Wannamaker. Juhana -- http://music.columbia.edu/mailman/listinfo/linux-graphics-dev for developers of open source graphics software

20 years

[linux-audio-user] Re: Multiple sound cards

by Timo Sivula

Hello > From: Russell Hanaghan <hanaghan(a)starband.net> > >There was a thread here (or on linux-audio-developer@?) where one disconnected the quartzes from the second and third soundcard and connected them with the one from the first soundcard. I was the one that did that. And it does work. I call my project El-Cheapo to reflect the ideology: to create a reliable multichannel recording system at a as low a budget as possible. Have a look at the linux audio and alsa archives for "El-Cheapo" and you should find the threads. My current system can record 6 simultaneous input channels without xruns using using three AudioPCI cards that cost me 20 US each. The PC is based upon a 2G Celeron CPU that you can get for 100 US nowadays and 1 Gb of memory. OS is Fedora Core 1 and Planet CCRMA. I removed the crystals from two of the cards and chained the clocks after the first card's clock. I get good recordings with a latency of about 65 ms, or -n3 -p 1024 with 48 kHz sample rate. At 44.1 kHz I can occasionally get a stable 8 ms latency with -n3 -p128, but the next time I start it, it may give xruns. -p2048 works rock solid 100% with no problems. XFCE desktop gives better results than Gnome. Please read the El-Cheapo threads and drop me a line if you need advice on the hardware mod. Software is not my field, so there I rely on the help from these lists, too. br, Timo .............................................................. MTV3 Laajakaista - Hauskemman elämän puolesta. http://www.mtv3.fi/liittyma/hankinta/laajakaista/

20 years

[linux-audio-user] Multiple sound cards

by Pam & Harold Norris

Hi all, I'm not really new to either linux (4 -5 years) or linux audio (2-3 years) BUT I am new to getting more than one sound card to function at the same time. I'm trying to get a linux based sound system (recording only) up and running for our church. They currently have an 8 channel mixer/amp and I would like to record8 analog channels in real-time. It seems everything I have tried doen't work. Here's the situation: I have alsa v 1.07 drivers, etc installed on a 2.4.25 kernel with the low-latency patch I have downloaded Jack v 0.99 and installed it. In conjunction with Ardour I can get either, BUT NOT BOTH sound cards to record/play. Any ideas? I have even explored the 8 channel sound cards but I just know the church can't afford $500. Thanks Harold Norris

20 years

[linux-audio-user] jack + spiralsynthmodular

by Artem Baguinski

hello if i use OSS module of SSM and set it up to output only i get nice output if i set it up for duplex i hear some clicks if i use JACK module i hear some weird extra harmonics + noises, no matter what JACK settings. where should I look for the reason? NB: if i use ardour + jack i have no problem with or without duplex. -- Artem Baguinski: http://www.artm.org/ V2_Lab: http://lab.v2.nl/ V2_ Organisation for the Unstable Media: http://www.v2.nl/

20 years

[linux-audio-user] and here's another song

by R Parker

Hi, This song is mastered with JAMin but I can't recall if it's mixed with Ardour. This is an Ezra Pound poem that I wanted to do something with since reading it in the early 1980's. It took about 20 years to get the right chemistry. What I learned tonight. You know how Diet Coke foams up in a glass. You get an inch of coke and eight inches of foam. If you touch the side of yer nose with your finger and then stick the digit into the foam, it pops the bubbles. http://www.iaxs.net/~rparker/sestina.ogg Ron Parker Mirror Image Studios __________________________________ Do you Yahoo!? Meet the all-new My Yahoo! - Try it today! http://my.yahoo.com

20 years

[linux-audio-user] music made with linux

by R Parker

Hi, Be careful what you wish for! In response to Dave's suggestion that we focus on music, I'm posting one of my songs. My server is complete crap. If you experience download problems, you'll have to be patient. Of course anyone is free to load the song onto another server. Marek, I am tempted to rerecord the vocal track just for you. But I won't, so, you'll need to replace every instance of MP3 with RME. Of course I love RME and you'll hear why I wouldn't do that. Not even for you. :) DISCLAIMER song contains adult language. if this offends thee, please don't download it. Background Info This song, mp3dotcom, is from a set of around 20. My order for the band was to write and record the music for two albums in one session and that each song must be a different style of music. We did not record any previously written ideas. I hired my studio partner Bill Bailey to produce and engineer the album. We designed an itenerary that started the recording session with drums. We worked with the drummer for about an hour to warm him up, judge his capabilities and get tones. About every hour there after we added the next logical instrument; bass, guitar, keyboard, second guitar, percussion, second bass, etc until we reached the finale where everyone achieved euphoric stupidity. There were about a dozen players involved. Everyone had a specific time that they were expected to arrive and we asked them to not show up early. Think of it as mahem by design. Everyone involved agreed that it was the most fun they ever had in a studio. After 18 hours we had enough music for two albums and we began writing lyrics and producing vocals. It took about four sessions to complete the vocal tracks and a couple more to mix 11 or 12 of the songs. Production Details The music was orginally recorded to 16bit blackface ADAT. A couple years ago I transfered the multitracks to Ardour for remixing. I mastered this song today using Ardour and JAMin. There were transient spikes on the snare hits that caused distortion and a short loss of audio immediately following many of the snare hits. I put the TAP limiter post fader to hold the spikes down by -5db or there abouts which corrected that problem. Total mix and master time for this song is definitely less than 60 minutes. I've never released this album although half the songs ended up in an indie film that starred one of the Saturday Nite Live writers. The movie was titled Jack Halloween. I appreciate bad movies as much as anyone but this movie sucked so bad I couldn't even watch it. After agreeing to let the producers, City Lights Media of NYC, "use my crappy songs in your no budget movie" i informed them that they had thrown their money in the toilet and that the movie wasnt' worthy of releas. They agreed about the quality of the movie and I don't think it ever saw the light of day. I guess this album is about four years old and it's time to start releasing it one song at a time. One of the bass players was murdered in a domestic assault, and the flute player died of a herione overdose. The rest of us are just getting older, fatter and losing our teeth. Damned it all! After much TODO: http://www.multitrack.us/~parker/music/mp3dotcom.ogg Long live The Who, ron __________________________________ Do you Yahoo!? Yahoo! Mail - Helps protect you from nasty viruses. http://promotions.yahoo.com/new_mail

20 years

[linux-audio-user] Music made on linux on AGNULA Libre Music

by Davide Fugazza

Hello, as the maintainer of AGNULA Libre Music (http://muzik.agnula.org) I've been ehm... lurking the thread about collecting music made with linux. AGNULA Libre Music is basically a web site where te registered user can upload his own music, choose a license, write metatag and have it displayed into the directory. Very straightforward. So, as you probably know, the ALM archive was born with some kind of licenses in mind rather than tools, but I admit I like the idea to promote music composed/performed/recorded with free software. We have some ideas, such as displaying a logo for linux-made tracks - maybe this can be done better :) Of course, we don't want to compete with similar services or tools, just let us know your comments, ideas and feelings. Thank you, Davide -- http://muzik.agnula.org davide.fugazza(a)agnula.org

20 years

[linux-audio-user] Two sound cards - module loading and signal routing

by Kevin Cosgrove

Two questions... First, I've got two sound cards in my system: ICH4 845G/GL Chipset AC'97 Audio Controller 0 [I82801DBICH4 ]: ICH - Intel 82801DB-ICH4 Intel 82801DB-ICH4 at 0xffaff800, irq 17 Module: snd-intel8x0 Sound Blaster AudioPCI64V/AudioPCI128 1 [AudioPCI ]: ENS1371 - Ensoniq AudioPCI Ensoniq AudioPCI ENS1371 at 0xdc00, irq 18 Module: snd-ens1371 The first "sound card", number 0, is on the motherboard. I can't get it to load as card number 1. /etc/modules.conf makes no difference in this regard. "snd-card-0" and "sound-slot-0" seem to be ignored. I've tried lots of variants in modules.conf to get this to work, and tried various orders. Here's a simple case: alias snd-card-1 snd-intel8x0 alias snd-card-0 snd-ens1371 Is there a way to get this to work? My second question might be related to the first. If I disable the on-board sound card, then all but one sound related thing works for me. Audio in/out works, MIDI in/out works, speakers work. Playing a CD does not produce sound no matter what the application (cdp, Kscd, xmcd). If I enable the on-board sound, then I can play CDs fine, but the output comes out of the on-board sound card. I'd like to reroute the CD sound to come out of the SoundBlaster PCI sound card. How can I do this? Thanks.... FWIW, my loaded sound related modules are these: snd-seq-midi 6176 0 snd-seq-oss 27648 0 snd-seq-midi-event 4480 2 snd-seq-midi,snd-seq-oss snd-seq 40592 5 snd-seq-midi,snd-seq-oss,snd-seq-midi-event snd-ens1371 17508 0 snd-pcm-oss 45992 0 snd-mixer-oss 16384 1 snd-pcm-oss snd-intel8x0 26572 0 snd-ac97-codec 57936 2 snd-ens1371,snd-intel8x0 snd-pcm 68360 3 snd-ens1371,snd-pcm-oss,snd-intel8x0 snd-timer 19204 2 snd-seq,snd-pcm snd-page-alloc 6408 2 snd-intel8x0,snd-pcm gameport 2176 2 snd-ens1371,snd-intel8x0 snd-mpu401-uart 5504 1 snd-intel8x0 snd-rawmidi 17700 3 snd-seq-midi,snd-ens1371,snd-mpu401-uart snd-seq-device 5640 4 snd-seq-midi,snd-seq-oss,snd-seq,snd-rawmidi snd 38244 12 snd-seq-oss,snd-seq,snd-ens1371,snd-pcm-oss,\ snd-mixer-oss,snd-intel8x0,snd-ac97-codec,\ snd-pcm,snd-timer,snd-mpu401-uart,snd-rawmidi,\ snd-seq-device soundcore 6112 2 snd,bttv -- Kevin

20 years

Re: [linux-audio-user] live moog madness

by John Check

On Saturday 16 October 2004 12:15 am, §t3 wrote: > Portamento is a just a parameter, not the Moog itself. > By this way you'll never get Moog-like sounsd. > Sorry. > > On Fri, 2004-10-15 at 23:17 -0400, Austin wrote: > > It's time to ask for advice. :-) > > > > I'm playing a show next weekend with a rock band. I'm using a MIDI > > controller and a Roland Sound Canvas for almost everything, but there > > are two songs that need typical "Moog" sounds... highly distorted and > > heavy portamento (think Weezer or The Rentals). This the Sound Canvas > > cannot do (AFAIK). > > > > Without buying an old Moog, what are my options, and what do you > > suggest... looking for cheap, and flawless on-stage? > > > > Ideas: > > 1. Look for a cheap used MIDI sound module with great portamento. I've > > never seen one. > > 2. Alsa Modular Synth. I really like the portamento effect, but I've > > yet to find any great moog sounds, and I'm not good at making my own. > > It's quite stable, but gives me "clicky" artifacts sometimes. > > 3. ZynAddSubFX. Has some great synth sounds, but the portamento is too > > "over the top". Over dramatic. adjust the glide time. > > 4. VST. I have some *amazing* Moogy VST plugins, but no idea how to > > use them with linux. I'm aware of the wine/vst libraries, but though > > they were mainly for effects, not instruments. > > 5. Better ideas are welcome. Remember that simple and reliable is more > > important than sound. > > > > Thanks, > > Austin

20 years, 1 month

[linux-audio-user] TAKE ACTION - RME customers and linux audio users please read

by Marek Peteraj

Hi all, following the conclusion of a very long discussion on both LAD and LAU mailinglists, i would like to invite you all to participate in an event that should take place on RME's official forum. The goal is to run a thread on linux audio and RME support. Not a discussion, but rather just raising your hand if you are a customer and letting them know what hardware you are using, or whether you are interested in their products or plan to purchase one if you are not a customer of RME todate. Please, if you are a RME customer, let them at least know what hardware you are using. You are free to express your feelings and you are free to express no feelings if you do not wish. Please avoid using swearwords. In case you haven't found the thread, feel free to start it. "Hi, i'm a linux audio user and i'm using your prod. X with linux audio and i plan to continue using your products in the future (upgrades, new products) if there will be future support from RME by providing specifications" or something along these lines. We need to agree on the topic so that people can easily find it: "Linux audio, ALSA and RME support" In case you are not satisfied with the topic, let us know so that we can agree upon another one. Please be sure to post in that thread. In case you have friends that use linux audio with RME and are not LAD or LAU subscribers, please let them know. The forum can be found here: News server: news.x-networks.de Forum: rme-audio.forum In case you have troubles finding the right software in order to reach the forum, here are some suggestions: Mozilla www.mozilla.org Pan http://pan.rebelbase.com/ Pine http://www.washington.edu/pine/ In case somebody knows of other newsreader software please let us know. Ok, let's go! :) thanks Marek

20 years, 1 month

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Linux-audio-user December 2004