Linux-audio-user December 2003

linux-audio-user@lists.linuxaudio.org

149 participants
190 discussions

[linux-audio-user] Re: some notes regarding sync (Jack, MTC) under Linux

by David J. Kuntz

> ------------------------------ > > Message: 4 > Date: Thu, 18 Dec 2003 08:53:05 -0500 > From: Dave Phillips <dlphilp(a)bright.net> > Subject: [linux-audio-user] some notes regarding sync (JACK, MTC) > under Linux > To: LAU Mail <linux-audio-user(a)music.columbia.edu> > Message-ID: <3FE1B141.30809(a)bright.net> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Greetings: > Snip . . . > In a similar vein, I tried recording Hydrogen to two channels in Ardour, > running Hydrogen as slave, Ardour as master. The first play-through of > the Song in Hydrogen records fine in Ardour, but then I get a terrible > distortion. I can supply a soundfile and screenshot that clearly > sounds/shows what's happening. Perhaps it's related to the first problem > above ? I got the same thing last week, but I haven't had the problem since and I haven't had a chance to try to duplicate it. I'll give it a shot tonight.

21 years

[linux-audio-user] linux kernel 2.6.0

by aguerrier

Hi What sort of improvements are we(linux-audio-users) to expect upon upgrading the kernel of our DAW to 2.6.0? I am asking the question to get some knowledge and start a nice discussion. I have read 'The Wonderful World of Linux 2.6' on http://www.kniggit.net/wwol26.html There is a nice paragraph on 'audio and multimedia'; it mentions ALSA's inclusion in the kernel and improvements in USB Audio and MIDI devices and some upgrade in Video4Linux subsystem, as well. What does it all mean to our day-to-day productivity? Should I now get the M-Audio Firewire 410, because its functionality might/probably have improved? Any thoughts? Adler

21 years

[linux-audio-user] Terratec EWS88MT (envy24) problem

by Ben Cochez

Hello, I have a Terratec EWS88MT soundcard, and I want to control it via a console interface. Many users with this card use the envy24control program (which does it job) but that's no option for me since X is not available on that machine... Alsamixer lists all the channels, but has some problems outputting sound to all the eight channels. If I send some signal to all the eight channels i'm only getting sound output on two or three of them... I'm using v0.9.8 of the libraries, drivers and utilities. I've tried aumix, but that mixer doesn't show the channels I need... Any advice what to do next? Thanks! Ben

21 years

[linux-audio-user] keyboard falls asleep

by Jaakko Prattala

Hi. I'm trying to get my multiface to work with my laptop again. I've gotten to a point where I can start jackd and it seems to run ok except that ~2 seconds after it starts, my keyboard goes numb with pc_keyb: controller jammed (0x15) or pc_keyb: controller jammed (0x35) This is not the only situation where this has happened. Things got a lot better when I switched to another driver for my graphics card. I know this is not strictly audio-related but maybe someone has similar experiences and can help? -- Jaakko

21 years

[linux-audio-user] The trouble with disks

by John Anderson

I'm using ardour to do around 8 tracks of audio, not all have regions active all the time. Playing a session through the first time, I get grrrtz every so often, usually but not always accompanied by an xrun report from jack. It's correlated with disk activity. Which is a Fujitsu MAN3367 on an Adaptec 29160 and according to hdparm can do around 50Mb/s. Although in ardour the disk throughput indicator shows anything from 9 to 14, depending on the number of regions being played, and the scheduler settings in use. I guess that's because the disk has to seek for the data for various different regions. Which are on a Reiserfs partition. I'm using an Athlon 2200+ on an MSI motherboard with 1Gb of memory. This is after my nice dual-athlon motherboard died, which had none of these problems. <sigh> I'm using 2.6.0-test11 kernel (with pre-emption), and I've tried the as scheduler (with various settings), the cfq scheduler and the deadline scheduler (which seemed to be the worst for this kind of low-latency work). It's subjectively better than 2.4.22 with low-latency and pre-emption patches. top shows that whenever there's a dropout, the CPU has just spent anything from 6 to 30% on io wait. It's definitely not a sound card issue - once the session has played through once and the audio files are cached, I get flawless playback with ardour showing disk throughput of 190Mb/s, even with a compile going in the background. I spent a few days playing with PCI latencies as well, but that didn't make a difference. Dropping the SCSI controller tagged queue depth to 4 makes recording more reliable, but doesn't really help otherwise. It also doesn't seem to make much of a difference if I run jack with buffer size of 1024 or 256. I haven't tried lower than that, and the card (Terratec EWS88MT) won't go higher that -n 2 -p 2048. Short of getting another dualie motherboard (which is a PITA in this country, and expensive), is there anything else I can try? low-latency patches for 2.6 kernels? thanks John

21 years

[linux-audio-user] Re:Changing ALSA driver.

by David Baron

Rmmod does (think it will) remove the driver. It will not, however, end the association of that driver with the sound card. Using the sound card configuring routine simply goes back to the erroneous maestro. If I manually change it, it exits complaining that the sndconfig entries are already there. All that is is an alias snd.... = maestro. I have two other devices around as well: 1. USB Roland MIDI. This appears to have been configured so I need some quick way of testing it out. Maybe I'll just start up rosegarden and see if it receives anything. 2. SW60XG ISA sound card. This uses no IRQ or DMA, just a settable port address. The card is supposed to be accessible using an mpu401 driver. How might I set this one up.

21 years

[linux-audio-user] sfc-0.013 Released.

by holborn

sfc (SoundFontCombi) is a midi router oriented to mix sounds of your sound devices, up to 8 sounds can be mixed or split, for do that has six midi out ports and two midi in ports, up to six different devices can be used to produce combinations of sounds like some synthesizers. The connection with your devices are automatized, then you can load/save your "mixes" in banks of sounds, and change it via Midi Program Change message or by the computer. sfc take the advantages of ALSA sequencer for do that an of course you can use any kind of device who recognizes midi messages to produce sound, like emu10k1 hardware shythesizer, Timidity. FluidSynth, ZynAddSubFX, external expanders o synthesizers .... anything you want. Then you only need put Ardour in record mode and play .. :-) == v0.0013 (17/12/2003) == ---------------------------------------------------------------------------- - Load bank by config settings. - Improved window settings. - Small bug fixes. - Solved bug changing programs. - Added ability to change programs in main window. - Solved bug in help command line. - Load GMPresetList.txt by default. - Removed graphic thread solving CPU time bug. - Use GNU/Autotools scripts. sfc is available in: http://personal.telefonica.terra.es/web/soudfontcombi/sfc-0.013.tar.gz http://www.telefonica.net/web/soudfontcombi/sfc-0.013.tar.gz Grettings Josep

21 years

[linux-audio-user] [ANN] AlsaModularSynth-1.7.1

by Matthias Nagorni

Hello, together with the latest release of MCP/REV/VCO-Plugins by Fons Adriaensen, AlsaModularSynth-1.7.1 can be considered as a major step forward in realistic virtual analogue modular synthesis. There are some new sound examples (.ogg) on alsamodular.sourceforge.net that give an impression of this. For a detailed list of what is new, check out the "News" section on the project page. Have fun ! Matthias -- Dr. Matthias Nagorni SuSE Linux AG Maxfeldstr. 5 phone: +49 911 74053375 D - 90409 Nuernberg fax : +49 911 74053483

21 years

[linux-audio-user] M-Audio or Terratec?

by lau＠hippie-online.de

Hello, now that I learned from you that my SB live does not support direct digital input I decided to buy a new card. So far I dither between: - M-Audio Delta Audiophile 2496 - Terratec EWX 24/96 Which one would you prefer? Ciao, HippiE

21 years

[linux-audio-user] Syncing Ardour and Rosegarden (or Muse)

by John Williams

I know that this is something of a FAQ, but I've been trawling the net for a couple of days and could not find an answer. So, apologies if I'm acting a bit clueless or lazy ... Anyway. I would like to set up synchronisation of ardour (ardour-0.9beta9-1.rhfc1.ccrma) and rosegarden (rosegarden4-0.9.5-1.rhfc1.ccrma) on Fedora. I have tried _many_ combinations of setting ardour and rosegarden as slave and master, and using MIDI or jack master/slave systems. No joy. It is possible? And if so, how? I am willing, once I find out how, to write it up and contribute it to some FAQ or WWW site, e.g. http://www.djcj.org/LAU/quicktoots/ TIA, John. John Williams Department of Marketing Otago University Dunedin, New Zealand

21 years

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Linux-audio-user December 2003