Linux-audio-user August 2006

linux-audio-user@lists.linuxaudio.org

146 participants
124 discussions

[linux-audio-user] X events making noise through soundcard.

by Gian Paolo Mureddu

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi everyone! I have noticed this for a long time, but did not actually thought about it until recently. It so happens that apparently a lot of X events produce some sort of noise ranging also from what I am doing. First of all, here are my system's specs: * AMD Athlon 2800+ (S754) * VIA-based motherboard with K8TMM chipset. VIA VT8235 southbridge (the box says VT8237R, but it actually is a VT8235) * 2x 512Mb RAM DIMM sticks DDR PC-2700 * 2x 80 Gb ATA-100 HDDs; one Western Digital, one Seagate. Attached to primary IDE channel. * 1x 40 Gb ATA-133 Maxtor HDD, connected through add-on IDE card. * 1x 10 Gb ATA-66/100 Seagate HDD (used mainly for storing .ogg files), connected through the IDE add-on card * 1x LG CD-RW 52x32x52, secondary IDE master. * 1x LG 16x DVD-RW , secondary IDE slave. * 1x generic brand Floppy disk drive. * 1x GeForce 5900, 128Mb VRAM. Using nVidia's proprietary driver. * 1x Sound Blaster Live! Value, the primary sound card. Using ALSA 1.0.11 emu10k1 driver... This has been my trusty sound card for so many years now. So this noise happens whenever there are events, from dragging the mouse, to cliking on windows, to scrolling a window or even typing some text. The noise is not very audible, only if I crank the volume really high, and it is composed primarily of low frequency sounds. These noises even vary from application to application. They're like clicks in Thunderbird, with a rather low repetition frequency, and a much more rapid succession in Firefox, for instance. When changing focus of windows, or when changing from one virtual desktop with some windows to another (despite if the other has or no windows) the sound I can only describe it as "similar to that sound in Diablo II when you changed tabs or clicked the close button of any other "window", like the Inventory"... I can't really describe it better than that. I will try to see if I can record some these sounds. There's a "base humming" sound in the background if I crank all the way up the volume either on my speakers or headphones. Anyway, my question is what are these, and why are these produced? I know they respond to activity in the computer, mainly from X, or the video card, but why? Another thing that I think I read somewhere a while back. I have optical drives connected to the sound card through analog cables... Is it possible that these are working as "antennas" and what I hear is actually the the activity of the PSU/CPU/Memroy, etc? -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iD8DBQFEyHrVXM+XOp70dwoRAsj5AJ4xXaDY42LzDVqHODDortO3YK7gjwCdGQsT 3RrbKGGkvr+Sn3/fI6yEWq0= =52/R -----END PGP SIGNATURE-----

17 years, 8 months

[linux-audio-user] Bass V-amp vs V-amp

by Loki Davison

I'm currently playing my bass through my v-amp but i find it a little lacking in vibe. I'm wondering how much different the bass v-amp sounds for bass compared to the guitar v-amp. Is it worth while getting one? Has anyone played a bass through both? I really don't have room in my place for a decent sized practice amp, so either it's buy an amp and move apartments, buy a bass v-amp or live with what i have. I mostly listen through headphones anyway... it keeps my gf happier. So should i go for a bass v-amp? Loki

17 years, 8 months

[linux-audio-user] specimen takes 98% cpu

by Atte André Jensen

Hi I installed specimen on my Pentium M 1.6 laptop. It eats up 98% (or whatever is left) of the cpu just sitting there, nothing loaded, nothing playing. Threw a few samples at it, and it seems to run just fine, the system isn't slowed down or anything. But is this really normal? Anyway to avoid it? -- peace, love & harmony Atte

17 years, 8 months

[linux-audio-user] realtime problems

by Atte André Jensen

Hi I just installed xubuntu 6.06 on my T41 laptop. When I start jack like this: "jackstart -R -d alsa -p 64" I get: jackstart: cannot get realtime capabilities, current capabilities are: =ep cap_setpcap-e probably running under a kernel with capabilities disabled, a suitable kernel would have printed something like "=eip" This is both with the stock kernel (2.6.15) and a 2.6.17 patched with http://people.redhat.com/mingo/realtime-preempt/ Here's something from my .config: atte@ajstrup:~$ grep PREEMPT /usr/src/linux/.config # CONFIG_PREEMPT_NONE is not set # CONFIG_PREEMPT_VOLUNTARY is not set # CONFIG_PREEMPT_DESKTOP is not set CONFIG_PREEMPT_RT=y CONFIG_PREEMPT=y CONFIG_PREEMPT_SOFTIRQS=y CONFIG_PREEMPT_HARDIRQS=y CONFIG_PREEMPT_BKL=y CONFIG_PREEMPT_RCU=y # CONFIG_DEBUG_PREEMPT is not set # CONFIG_CRITICAL_PREEMPT_TIMING is not set Another thing: Supposed I get the realtime kernel running, one of my usb keyboards (evolution mk-449c) is not recognized (tried both vanilla 2.6.17 and with the patch applied + the 2.6.17.7 w/wout patch). When I plug it in I get this in dmesg: [ 500.792000] usb 2-2.1: new full speed USB device using uhci_hcd and address 4 [ 500.916000] usb 2-2.1: no configuration chosen from 1 choice Needless to say, my alsa configuration is exactly the same with all kernels, here's my /etc/modprobe.d/alsa-base: atte@ajstrup:~$ cat /etc/modprobe.d/alsa-base # autoloader aliases install sound-slot-0 modprobe snd-card-0 install sound-slot-1 modprobe snd-card-1 install sound-slot-2 modprobe snd-card-2 install sound-slot-3 modprobe snd-card-3 install sound-slot-4 modprobe snd-card-4 install sound-slot-5 modprobe snd-card-5 install sound-slot-6 modprobe snd-card-6 install sound-slot-7 modprobe snd-card-7 # Cause optional modules to be loaded above generic modules install snd modprobe --ignore-install snd $CMDLINE_OPTS && { modprobe -Qb snd-ioctl32 ; : ; } install snd-pcm modprobe --ignore-install snd-pcm $CMDLINE_OPTS && { modprobe -Qb snd-pcm-oss ; : ; } install snd-mixer modprobe --ignore-install snd-mixer $CMDLINE_OPTS && { modprobe -Qb snd-mixer-oss ; : ; } install snd-seq modprobe --ignore-install snd-seq $CMDLINE_OPTS && { modprobe -Qba snd-seq-midi snd-seq-oss ; : ; } # Cause optional modules to be loaded above sound card driver modules install snd-emu10k1 modprobe --ignore-install snd-emu10k1 $CMDLINE_OPTS && { modprobe -Qb snd-emu10k1-synth ; } install snd-via82xx modprobe --ignore-install snd-via82xx $CMDLINE_OPTS && { modprobe -Qb snd-seq ; } # Load saa7134-alsa instead of saa7134 (which gets dragged in by it anyway) install saa7134 modprobe --ignore-install saa7134 $CMDLINE_OPTS && { modprobe -Qb saa7134-alsa ; : ; } # Prevent abnormal drivers from grabbing index 0 options snd-bt87x index=-2 options snd-atiixp-modem index=-2 options snd-intel8x0m index=-2 options snd-via82xx-modem index=-2 # i810 alias sound-service-0-0 snd-mixer-oss alias sound-service-0-1 snd-seq-oss alias sound-service-0-3 snd-pcm-oss alias sound-service-0-8 snd-seq-oss alias sound-service-0-12 snd-pcm-oss alias snd-card-0 snd-intel8x0 alias sound-slot-0 snd-card-0 # ua-1a alias sound-service-1-0 snd-mixer-oss alias sound-service-1-3 snd-pcm-oss alias sound-service-1-8 snd-seq-oss alias sound-service-1-12 snd-pcm-oss alias snd-card-1 snd-usb-audio alias sound-slot-1 snd-card-1 #evolution 1 alias snd-card-2 snd-usb-audio alias sound-slot-2 snd-card-2 #evolution 2 alias snd-card-3 snd-usb-audio alias sound-slot-3 snd-card-3 #evolution 2 alias snd-card-4 snd-usb-audio alias sound-slot-4 snd-card-4 options snd-intel8x0 index=0 options snd-usb-audio index=1,2,3,4 vid=0x0582,0x0a4d,0x0a4d,0x0a4d pid=0x0018,0x008e,0x008e,0x008f nrpacks=1 -- peace, love & harmony Atte

17 years, 8 months

[linux-audio-user] Tango Improvisation with some midi synths.

by Juan Marcelo Rodríguez

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello people, Here is an improvisation mine of the Tango called "Sur". This version is free, and isn't tango at all in the concept of the interpretation. However, it's a kind of new project I'm going to perform. I recorded four synth lines, without modify them after their first recording, so there are some mistakes... But I want to hear opinions about it. Tango, if you don't know, it's a very popular and well performed music in Argentina. The song was made with free vst plugins recorded with Ardour 1, using qjackctl, and fst. Four stereo tracks, in Slackware 10.2/Current with - -rt kernel 2.6.16 and Fluxbox. I just modified the volume and added little stereo tricks, not more. Enjoy or don't enjoy it!, but feel free to suggest ideas to improve my work!.. Best wishes. http://www.nixbox.com.ar/sur.mp3 Juan -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFE25IZwWB8GXdhYbcRAhPbAJ4ixAST/L2ZVx0lUQBdBN5QbvYb6gCfVU6S ZVwsAiskYxxr/OGLNQ8qiZU= =1DOi -----END PGP SIGNATURE-----

17 years, 8 months

[linux-audio-user] unsteady seq24

by Atte André Jensen

Hi I feel my seq24 is a bit untight. I thought it was due to my clock resolution was set to 250 hz (std ubuntu setting) so I grabbed a new kernel, patched it with http://people.redhat.com/mingo/realtime-preempt/ and switched clock resolution to 1000 hz. However the (slight) untightness is still there, so it must be something else. What should I look for? I run xubuntu 6.06 and the problem is observed when seq24 drives hydrogen. It's worse when theres activity on the machine. -- peace, love & harmony Atte

17 years, 8 months

[linux-audio-user] zynaddsubfx save/load

by Atte André Jensen

Hi I guess there are quite a few zynaddsubfx-users here, so here goes: How do I save/load a whole "setup" of zynaddsubfx? This should be handled in one go, and should (at least) include patches for the 16 slots, their volume + fx settings. -- peace, love & harmony Atte

17 years, 8 months

[linux-audio-user] Intersting requirement.

by Jonty Needham

Dear Guys, Having searched without success, I'm trying to find a command line piece of software which allows me to listen to a track, and, using command line interface, cut the start of the track off, up to an arbitrary point, and do the same with the end of the track. It is intended for someone who is blind to be able to edit the start and ends of mp3 lecture files. Can anyone help with this? Many Thanks God Bless -- Jonty Needham <jmn20(a)bath.ac.uk>

17 years, 8 months

[linux-audio-user] further success with tascam us-122

by Dan Easley

just an update, and a reminder to tascam us-122 users: make sure acpi is turned off. i've struggled (off and on) for about half a year to get stable low-latency performance out of this device (connected to a dell inspiron 1150). it's been quite frustrating at times - semi-stable high latency performance, with maddeningly random alsa timeouts - terribly unstable low latency performance, with jack losing connection to alsa around 2 minutes after starting. with acpi and cpuspeed turned off, rtirq and permissions set, snd-usb-usx2y module loaded with nrpacks=1 parameter set, and using the hwX,2 hwdep experimental alsa interface, i've been running at 256x2 (11.6 msec) with zero overruns and no audio glitches for about 10 hours now, and am confident enough in the system to take it on stage. acpi was the real dealbreaker. based on google searches it's the same story on windows. thanks much for all the archived advice i used to get to this point. i don't recommend the interface, by the way. far cry from the m-audio pci stuff i'm accustomed to, where i could install the programs and leave them running for weeks at a time, and everything just worked. and i never would've bought the thing had i done enough research to see it only has RCA outputs. still, getting the thing running stably is a huge step for me - you've no idea how excited i was to get home from work and see qjackctl's start button still grayed out. back to learning ardour. pd at some point. -- daneasley(a)gmail.com dan(a)towndowner.com dan(a)burntpossum.com http://towndowner.com http://burntpossum.com

17 years, 8 months

[linux-audio-user] Jack won't start on OpenSuSE 10.0 running KDE

by kenquad

Hi all: I'm running an OpenSuSE 10.0 machine with KDE and trying to get JACK .99 / Ardour working. I'm using qtJackctrl to try and start the server. Here's what it outputs: 20:00:46.917 Startup script… 20:00:46.917 artsshell -q terminate unix_connect: can’t connect to server (unix:/tmp/ksocket-user/linux.site-3114-44d6631f) 20:00:47.235 Startup script terminated with exit status=256. 20:00:47.235 JACK is starting… 20:00:47.235 /usr/bin/jackd -R -m -dalsa -dhw:0 -r48000 -p1024 -n2 -H 20:00:47.252 JACK was started with PID=5337 (0x14d9). jackd 0.99.0 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:0|hw:0|1024|2|48000|0|0|hwmon|swmeter|-|32bit control device hw:0 configuring for 48000Hz, period = 1024 frames, buffer = 2 periods 20:00:47.262 JACK was stopped successfully. 20:00:49.359 Could not connect to JACK server as client. My soundcard, an SB0410, seems to be properly recognized by SuSE. I tried going into kControl and turning off the KDE sound system, with no effect. Any ideas would be greatly appreciated. -- View this message in context: http://www.nabble.com/Jack-won%27t-start-on-OpenSuSE-10.0-running-KDE-tf208… Sent from the linux-audio-user forum at Nabble.com.

17 years, 8 months

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Linux-audio-user August 2006