Linux-audio-user February 2005

linux-audio-user@lists.linuxaudio.org

173 participants
197 discussions

by Bengt Gördén

Hi, I'm using my laptop to make some music. At home I planning to buy a computer with enough power to host a lot of music software. But when I'm away from home I'd like to use my laptop. The thing is that according to the specification on my laptop it would be enough power to run lots of demanding software. But there is, for example, Rosegarden and I have problem with xruns when I try to run that. I have an ACER Ferrari 3000 (a damned hot bastard that makes me wonder if the ACER community doesn't have a fertility problem if they really have this thing in their lap ;-) that has an Athlon-XP-M 1800+. I had a lousy HD in it that i changed but that only boosted the memory-to-HD performance. I seem to have other problems. The graphic is one thing. I have done all the things for real time performance and other stuff to get down the latency but still there is performance problem. It seems to be connected to jack but I'm not really sure. It would be interesting to here about other people who have set up laptops for music production. If there's already a site or compiled list of systems and how they perform I would be delighted to be pointed to it. But if it's not it would be nice if we could start a thread with how laptops are performing as music stations. Here's my system Model: ACER Ferrari 3000 Soundcard: VT8233/A/8235/8237 (yeah I know. crap) OS: Linux/Gentoo Kernel: 2.6.10-gentoo-r4 Audio: ALSA Audio-server: Jack-0.99.0-r1 Measurements Latency: Haven't had time to test this yet. Disk capacity with a Hitachi 5400, HTS548080M9AT00 Output: 19.6Mbit/s (measured with bonnie++) Input: 34.7 Mbit/s (measured with bonnie++) Music related software and their versions ardour-0.9_beta23 ecasound-2.3.3 rosegarden-4.0.9.91 seq24-0.6.0 audacity-1.2.2 timidity++-2.13.2 fluidsynth-1.0.5 hydrogen-0.9.1 museseq-0.7.1 zynaddsubfx-2.1.1-r1 - Bengan -------------------------------------------------------------- - KTHNOC/SUNET/NORDUnet | http://www.sunet.se/~bengan | +46 8 7906586 -

21 years

[linux-audio-user] Converting w64 to wav

by Arnold Krille

Hi all, what is the best and easiest way to convert a w64-file (from timemachine) into a wav-file? I am trying "sndfile <w64-file> <wav-filename>" but except 100% CPU-usage for _really_ long time nothing happens. No new file, no changes, no stopping after a time. I know that one of [audacity|sweep] opens w64-files but loads them into memory fully and the file to convert is 2.5GB. Can anybody give me some hints? Arnold -- There is a theory which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another theory which states that this has already happened. -- Douglas Adams, The Restaurant at the End of the Universe

21 years

[linux-audio-user] problems when restarting mixxx in same session

by Shayne O'Connor

i've been using mixxx (http://mixxx.sourceforge.net) with no problems for some time, but recently - *around* the time i patched my alsa driver with emu10k1 multi-channel, and updated qjackctl to the latest - it's being weird: * it starts without any drama the first time in a session (by that, i mean the first time i start up mixxx after having booted my computer), but if i close it and try to start it again, it's ouputs show up in qjackctl, but there is no gui ... even if i stop jackd and start again, the same problem - outputs, but no gui ... * if i delete the .mixxcfg in my home directory, then it starts again, but this requires me to each time reconfigure mixxx :( * if i reboot the computer (without deleting mixxx's config file), then it starts properly with all configurations intact :) if i start mixxx from the command line when it doesn't show a gui, here's what output i get: > [mrmachine@localhost <mailto:mrmachine@localhost> mrmachine]$ mixxx > Debug: Starting up... > Debug: type signal > Debug: type marks > Debug: type signal > Debug: type marks > Debug: playlist name Default i haven't been able to discover any more detailed debug output ... if it's any help, this is how i start jack (from qjackctl): #jackd -T -R -P60 -u -dalsa -dhw:0,3 -r48000 -p256 -n2 -s -S -P -o16 any help appreciated. shayne

21 years

[linux-audio-user] Ardour and Linux Audio presentation

by Jon Morin

Hi all, I have been asked to give a mini-seminar and live demonstration later this year on Ardour and Linux audio applications to the audio engineering students at the university that I work for. I plan to do a general overview of Linux with some diagrams and web links for further reading, some info about applications available, and supported hardware. Next, I will give a live demo of a session in the recording studio at the university. I'll bring in my computer, and set it up next to the ProTools machine that they are used to using, connect it to the projector so they all can see what I'm doing, and basically do a simple recording and mixing session with Ardour. The point is these students work with nice, expensive hardware and ProTools on a nice fast Macintosh computer in the studio, but when the class ends, many will want to continue their work in the home studio environment, and the director there wants me to present Linux as an affordable and stable alternative for pro audio work (as opposed to students having to buy ProTools, Sonar, Reason, or whatever) to get some decent work done. I plan on having someone videorecord the presentation and demo, and if it comes out any good, I'll make up DVD's and distribute them to whomever wants one for the cost of the media and shipping. Any ideas on stuff to include, or how to make this a killer presentation? BTW, sorry to cross-post, but I felt that this pertained to both the Ardour group and the LAU folks (many who are on both lists). I'm just overjoyed that I will get to show this stuff and hopefully convert a few users :) I'm also thinking about burning off a bunch of copies of the various audio-focused distros to hand out at the seminar. Jon M.

21 years

[linux-audio-user] capture line or cd in

by vector

ok ill bite whilst playing with alsamixergui i worked out how to change what input I use for capture but it seems i cant record from cd in, mic and line in all at once? in fact only from one at a time! SB type on motherboard audio. as soon as i set line to capture it disables mic etc Your all going to tell me this is normall right ;(

21 years

Re: [linux-audio-user] ld10k1 - success stories?

by Peter Zubaj

And yes, -s doesn clear TRAM. I think, what is needed is to implement "zero reading from TRAM" - this is emu10k1 feature, for now not used in ld10k1. Peter Zubaj ____________________________________ >>> POZOR ZMENA - KONCERT PRESUNUTY NA 28.2.2005 RAMMSTEIN, 28.02.2005 o 20,00, Bratislava Incheba, Info: 0904 666 363, http://www.xl.sk

21 years

Re: [linux-audio-user] ld10k1 - success stories?

by Peter Zubaj

> maybe my old sblive has only 512 M TRAM is not in sb live, it is in system memory. I don't know how is allocated memory inside linux, but maximum TRAM size needs 2 MB continuous memory. Maybe memory is fragmented and there is not such big fragment. Peter Zubaj ____________________________________ >>> POZOR ZMENA - KONCERT PRESUNUTY NA 28.2.2005 RAMMSTEIN, 28.02.2005 o 20,00, Bratislava Incheba, Info: 0904 666 363, http://www.xl.sk

21 years

Re: [linux-audio-user] ld10k1 - success stories?

by Peter Zubaj

Hi, >Anyway the TRAM is not unlimited, i dont know why, but in ld10k1 1.0.8 version >i was need to reduce the chorus delay line because ld10k1 returns no free Did you try ld10k1 -t 8 this should give you max tram size. Yu can check actual tram size in /proc file - there is hex size in samples (1024 Mega is maximum) In alsa emu10k1 driver was bug in setting TRAM size. Previous -t 7 means 1024 M samples - now it means 512 M samples. This was fixed in 1.0.8 or litle sooner - I don't know exactly. Peter Zubaj ____________________________________ >>> POZOR ZMENA - KONCERT PRESUNUTY NA 28.2.2005 RAMMSTEIN, 28.02.2005 o 20,00, Bratislava Incheba, Info: 0904 666 363, http://www.xl.sk

21 years

[linux-audio-user] Quattro and JACK

by Jason Hanggi

I'm new to this whole linux sound thing, and I'd like to get my M-Audio Quattro USB working. sorry if this email is a little long, i just want to go ahead and put most of my information up now, so you all aren't asking for it later. so far, i can play from XMMS using it's ALSA driver, I can send/receive midi data. i can refer to it as quattro1, quattro2, etc, as outlined in the standard .asoundrc (which i'll put at the end). i haven't even touched recording yet there's two problems i'm having. 1) when i do a $ aplay --device quattro1 test.wav I can hear it, but it's choppy and it get this: Playing WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo underrun!!! (at least 0.079 ms long) underrun!!! (at least 0.038 ms long) underrun!!! (at least 0.046 ms long) underrun!!! (at least 0.039 ms long) ... same if i just use aplay --device hw:1 when I try --device quattro I get aplay: set_params:837: Channels count non available the second problem I'm having, is I can't get the Quattro to work under JACK. If I try duplex mode, I get this in my message window: 22:07:32.554 /usr/bin/jackstart -R -dalsa -dhw:1 -r48000 -p1024 -n2 -i2 -o2 22:07:32.627 JACK was started with PID=3974 (0xf86). back from read, ret = 1 errno == Success jackd 0.94.0 Copyright 2001-2003 Paul Davis and others. jackd comes with ABSOLUTELY NO WARRANTY This is free software, and you are welcome to redistribute it under certain conditions; see the file COPYING for details loading driver .. apparent rate = 48000 creating alsa driver ... hw:1|hw:1|1024|2|48000|2|2|nomon|swmeter|rt|32bit control device hw:1 configuring for 48000Hz, period = 1024 frames, buffer = 2 periods Couldn't open hw:1 for 32bit samples trying 24bit instead Couldn't open hw:1 for 32bit samples trying 24bit instead could not start playback (Broken pipe) DRIVER NT: could not start driver cannot start driver 22:07:33.937 JACK was stopped successfully. 22:07:35.861 Could not connect to JACK server as client. if I only set for playback, then I get a bunch of clicking and a bunch of XRUN callbacks. if anyone could help me out, I'd really appreciate it. thanks! here's some info: $ more /proc/asound/cards 0 [AudioPCI ]: ENS1371 - Ensoniq AudioPCI Ensoniq AudioPCI ENS1371 at 0x1080, irq 11 1 [Quattro ]: USB-Audio - USB Audio Quattro M Audio USB Audio Quattro at usb-00:07.2-2, full speed $ more .asoundrc # quattro1 is pcm0 which has a maximum sample rate of 44100 and 16 # bit stereo pcm.quattro1 { type hw card 1 device 0 } ctl.quattro1 { type hw card 1 } # quattro2 is pcm1 which has a maximum sample rate of 96000 and 24 # bit stereo pcm.quattro2 { type hw card 1 device 1 } ctl.quattro2 { type hw card 1 } #---- # # compose 4 channels from two channel x two devices, hw:2,1 and # hw:2,2 # assuming that hw:2,1 and hw:2,2 give the same condition, 24_3LE/96k # pcm.quattro { type multi; slaves.a.pcm "hw:1,0"; slaves.a.channels 2; slaves.b.pcm "hw:1,1"; slaves.b.channels 2; bindings.0.slave a; bindings.0.channel 0; bindings.1.slave a; bindings.1.channel 1; bindings.2.slave b; bindings.2.channel 0; bindings.3.slave b; bindings.3.channel 1; } ctl.quattro { type hw; card 1; } # # Remap 4 channels as interleaved. # Use plug instead of route here, since 24_3LE is unlikely supported # by applications. # # arecord -r 44100 -c 4 -f s16_le -D q4 -d 5 /home/xxx/q4.wav pcm.q4 { type plug; slave.pcm "quattro"; ttable.0.0 1; ttable.1.1 1; ttable.2.2 1; ttable.3.3 1; } ctl.q4 { type hw; card 1; } # # Use route plugin for applications that do support 24_3LE # This lowers latency which the plug plugin introduces due to # resampling. # # arecord -r 44100 -c 4 -f s16_le -D q4b -d 5 /home/xxx/q41.wav pcm.q4b { type route; slave.pcm "quattro"; ttable.0.0 1; ttable.1.1 1; ttable.2.2 1; ttable.3.3 1; } ctl.q4b { type hw; card 1; }

21 years

[linux-audio-user] [ANN] QjackCtl 0.2.15a (fix) released!

by Rui Nuno Capela

Hi, QjackCtl 0.2.15a has been released! This is just a fix release, update highly recommended. As from the change log: - Regression from 0.2.13, of the not so stupid pseudo-mutex guards on the connections management framework, after fixing some crash reports from Fernando Pablo Lopez-Lezcano and Dave Phillips (thanks!); it pays to be such a paranoid after all :). Check it out from the usual place: http://qjackctl.sourceforge.net Enjoy. -- rncbc aka Rui Nuno Capela rncbc(a)rncbc.org

21 years

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Linux-audio-user February 2005