Linux-audio-user February 2005

linux-audio-user@lists.linuxaudio.org

173 participants
197 discussions

[linux-audio-user] Re: Building a Multitrack home studio

by Timo

> From: Florian Blaser <florian(a)becool.ch> > This is quite a big setup and I don't think it will fit in our budget, so if > we could find a solution to buy it partially and then complete it aftewards, > it would be perfect.(2 inputs would be fine as a start, since we can just use > two SM57 to record all the instruments and use our existing analog system to > amplify the instruments that need it). Also, a physical control surface would > be a plus... Have a look at my "el-cheapo howto", that presents a way to get into multitrack recording very cheaply. http://www.djcj.org/LAU/quicktoots/toots/el-cheapo/ I am using this to record my drumkit with Ardour with 6 simultaneous channels. El-cheapo should give you a good and affordable start, and it will give you flexibility to postpone the investement on the multitrack soundcard until later. br, Timo Timo

19 years, 10 months

[linux-audio-user] Building a Multitrack home studio

by Florian Blaser

Hi everyone, I'm currently thinking about setting up a small multitrack recording environment in order to record my band's rehearsals and apply some effects. Since I use linux as my main (and only... beside a little bit of MacOS X) operating system since a few years, I want to do this under linux and found out quite a lot of information about what software can be used. However, I wasn't able to find good and reliable information about which hardware to use. Here are our requirements : - 16 analog inputs (with a phantom power-supply and reasonable preamps) - 8 output channels (5 "feedbacks" to the musicians, 1 stereo main output) This is quite a big setup and I don't think it will fit in our budget, so if we could find a solution to buy it partially and then complete it aftewards, it would be perfect.(2 inputs would be fine as a start, since we can just use two SM57 to record all the instruments and use our existing analog system to amplify the instruments that need it). Also, a physical control surface would be a plus... So, with what kind of hardware would you go in order to fullfill our requirements ? Also, is there a possibility to have some pedals connected to the computer in order to switch effects on and off while playing ? Many thanks for your answers. Best regards, Florian Blaser

19 years, 10 months

[linux-audio-user] aplay+pcmplugins as a soundfile convertor

by Maarten de Boer

Hello, I was asked to convert some audio files that we got sent on cd. The files had the extension .sd2, and a description saying "44100 stereo 24 bit". Obviously the files were just the data fork of sound designer 2 files. I could reproduce them perfectly with aplay -r 44100 -f S24_3BE -c 2, but when I wanted to convert the files, I found sox could not deal with 24 bit, and sndfile-convert needs files with a header (as far as I understand). So I used an approach that you might find useful. I thought, if aplay can play them, and alsa pcm plugins can do format conversion.. why not use those? The asoundrc below creates a device called cdaudiofile, of type plug, that takes care of the format conversion. It's slave is a device of type file, called stdoutfile, that writes to the standard out and has a snd-dummy device as slave. (Is there another way to do that without loading snd-dummy? I tried plug: null, but that didn't work) The result is clear: using device cdaudiofile for playback, will do the format conversion, and write the audio to the stdout: (create card 1, which is dummy) $ modprobe snd-dummy (convert to raw S16LE) $ aplay -D cdaudiofile -r 44100 -f S24_3BE -c 2 file.raw > cdaudiofile.raw (convert and pipe through sox to create a wav file) $ aplay -D cdaudiofile -r 44100 -f S24_3BE -c 2 file.raw | sox -r 44100 -c 2 -s -w -t raw - cdaudiofile.wav It made me really appreciate the flexibility and elegance of alsa. maarten ----/etc/asound.conf---- pcm.stdoutfile { type file slave { pcm "hw:1,0" } file 1 } pcm.cdaudiofile { type plug slave { pcm "stdoutfile" format S16_LE rate 44100 channels 2 } }

19 years, 10 months

[linux-audio-user] midi input

by Noah Roberts

I got pmidi to play out to my keyboard, but I can't figure out how to get input. When I open rosegarden and go to manage midi devices I add a new one and get a "No Connections". When I select the "64:0" port that pmidi used it just goes back to "No Connection". It won't select that port. I think maybe rosegarden is buggy. Doesn't help that I am using amd64. Is there a different program I can use to try and record midi from the keyboard? Is there maybe a module I am not loading? pmidi -l: Port Client name Port name 64:0 ES1371 - Rawmidi 0 ES1371 lsmod: snd_seq_midi 8192 0 snd_seq_midi_event 7168 1 snd_seq_midi snd_seq 55232 2 snd_seq_midi,snd_seq_midi_event snd_pcm_oss 60836 0 snd_mixer_oss 19648 1 snd_pcm_oss snd_ens1371 23108 5 snd_rawmidi 23136 2 snd_seq_midi,snd_ens1371 snd_seq_device 7884 3 snd_seq_midi,snd_seq,snd_rawmidi snd_pcm 100964 2 snd_pcm_oss,snd_ens1371 snd_page_alloc 10760 1 snd_pcm snd_timer 24008 2 snd_seq,snd_pcm snd_ac97_codec 68740 1 snd_ens1371 snd 58120 21 snd_seq_midi,snd_seq_midi_event,snd_seq,snd_pcm_oss,snd_mixer_oss,snd_ens1371,snd_rawmidi,snd_seq_device,snd_pcm,snd_timer,snd_ac97_codec -- Our enemies are innovative and resourceful - and so are we They never stop thinking about new ways to harm our country and our people - and neither do we. -- George W. Bush

19 years, 10 months

[linux-audio-user] aRts problem

by Yev Krupetsky

Hello, I´m having a problem when playing music with programs that use aRts. The way i checked that the problem is aRts itself is by running xmms, which uses alsa directly, and the sound was fine. Also the CD player works fine. When i tried to play music using the aRts player(#artsplay) the sound was jumping. I configured aRts to use default settings through the KDE sound-system GUI application. I also followed some basic procedures in the aRts handbook such as: 1. Setting RW permissions to everyone on: 1. /dev/dsp 2. /dev/sequencer 3. /dev/mixer 2. Deleting files from the /tmp/mcop-<user> directory 3. Running aRts manually: #artsd -F 10 -S 4096 At some point of doing all that #artsplay worked fine! But later it went back to play jumping sound. Can anyone help me with that or direct me to a site where i can find an answer to this problem. Thanks, Yev

19 years, 10 months

[linux-audio-user] Thac's RPMs on PCLOS (PClinuxOS by Texstar)

by Russell Hanaghan

Been testing this out. Nice distro modelled mostly from Mandrake but comes as LiveCD. Optin to install is also present from LiveCD. It's a snappy distro! They use Apt and Synaptic for package management. Cooker, Contrib and Main mirrors can be set to be accessed by Apt but can't seem to get it to work on Thac's site.... Thac? Are you out there? Perhaps you can check this thread and provide comment? http://www.pclinuxonline.com/modules.php?mop=modload&name=Splatt_Forums&fil… Thanks...

19 years, 10 months

[linux-audio-user] Re: [linux-audio-dev] realtime-lsm in Andrew Morton's latest kernel patchset

by Luke Yelavich

On Sun, Feb 13, 2005 at 02:00:38PM EST, Cal wrote: > Luke Yelavich wrote: > >Is the patch that is in the mm tree available anywhere? I would like to > >build some test kernels for Slackware but don't want to build mm > >kernels, so the patch would be great in this instance. > > http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.11-rc3/2… > > Seems to fit well against 2.6.11-rc3-bk9 too. Thanks. -- Luke Yelavich http://www.audioslack.com luke(a)audioslack.com

19 years, 10 months

[linux-audio-user] What are Master, PCM and AC97?

by Hillel

Hi all, I have little idea about audio terms, and the following always intrigues me: When I open KMix, the KDE Mixer, I can change the volume of both "Master" and "PCM" which both change the music volume. I can also control the volume of "AC97" but that has no effect while playing music. Can someone please explain what are those settings and what are the differences between them. This is my sound card: [xxx@localhost xxx]$ lspci | grep -i audio 00:1f.5 Multimedia audio controller: Intel Corp. 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 03) Regards, Hillel.

19 years, 10 months

[linux-audio-user] aRts problem

by Yev Krupetsky

Hello, I´m having a problem when playing music with programs that use aRts. The way i checked that the problem is aRts itself is by running xmms, which uses alsa directly, and the sound was fine. Also the CD player works fine. When i tried to play music using the aRts player(#artsplay) the sound was jumping. I configured aRts to use default settings through the KDE sound-system GUI application. I also followed some basic procedures in the aRts handbook such as: 1. Setting RW permissions to everyone on: 1. /dev/dsp 2. /dev/seqencer 3. /dev/mixer 2. Deleting files from the /tmp/mcop-<user> directory 3. Running aRts manually: #artsd -F 10 -S 4096 At some point of doing all that #artsplay worked fine! But later it went back to play jumping sound. Can anyone help me with that or direct me to a site where i can find an answer to this problem. Thanks, Yev

19 years, 10 months

[linux-audio-user] WA State: oly, tac, seatle

by Noah Roberts

Does anyone that is pretty good with this linux audio stuff live in the pac nw? I live in Yelm, 20 miles south of Olympia Washington. I would very much like to see some of the stuff done with ardour, jamin, etc. by someone that knows what they are doing. I know linux really well, but not audio stuff...I can play a couple instruments is all. So if someone lives relatively near me and would be willing to give me a tour of their linux and explain how some of these tools are used it would be really cool. -- Our enemies are innovative and resourceful - and so are we They never stop thinking about new ways to harm our country and our people - and neither do we. -- George W. Bush

19 years, 10 months

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Linux-audio-user February 2005