Linux-audio-user October 2007

linux-audio-user@lists.linuxaudio.org

147 participants
141 discussions

by holborn

Due some live things I decided to release horgand-1.14. http://horgand.berlios.de Also you can try the DSSI plugin available on the website. NEWS ---------- Hundreds of new presets (Strings, Brass, ... ) availables on the website. Five new waveforms. All the waveforms are available for LFO and DSP effects. Back to ALSA if JACK is not available. Code improved for less CPU usage. Some minor bugs fixed. ---------- Thanks. Josep

17 years, 10 months

unable to set scheduling priority with rt kernel

by Chuckk Hubbard

Hallo. I posted to the jackit-devel list too, so apologies if you're seeing this again. No luck there... jackd version 0.103.0 tmpdir /dev/shm protocol 16 2.6.22.1-rt9 Debian testing I've just noticed that I am unable to set jackd priority on the command line. I have a script set up to use "sudo chrt" to change it, but when I comment out that line in the script, jackd runs at 0 with schedule "other". My script: sudo chrt -fp 82 `pidof "IRQ-16"` jackd --realtime -P 70 -dalsa -P -p256 -n2 -r44100 & sudo chrt -fp 70 `pidof "jackd"` chrt -p `pidof "IRQ-16"` chrt -p `pidof "jackd"` exit If I comment out the second sudo chrt line, the last line returns: pid 5032's current scheduling policy: SCHED_OTHER pid 5032's current scheduling priority: 0 otherwise it is SCHED_FF and 70. My kernel has: # 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_CLASSIC_RCU is not set CONFIG_PREEMPT_RCU=y /etc/security/limits.conf has: @audio - nice -10 @audio - rtprio 99 @audio - memlock 4000000 (someone on the jack list suggested that my previous value "unlimited" was not recognized, so I stuck this in but no change) and user "chuckk" is in group "audio". Lastly, the output from my script when the second sudo chrt line is commented out: ------------------------------ pid 684's current scheduling policy: SCHED_FIFO pid 684's current scheduling priority: 82 jackd 0.103.0 Copyright 2001-2005 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 JACK compiled with System V SHM support. pid 5132's current scheduling policy: SCHED_OTHER pid 5132's current scheduling priority: 0 loading driver .. Enhanced3DNow! detected SSE2 detected apparent rate = 44100 creating alsa driver ... hw:0|-|256|2|44100|0|0|nomon|swmeter|-|32bit control device hw:0 configuring for 44100Hz, period = 256 frames, buffer = 2 periods ALSA: final selected sample format for playback: 32bit little-endian ALSA: use 2 periods for playback -------------------------------------- Any ideas what I may have missed or misconfigured? Thanks! -Chuckk -- http://www.badmuthahubbard.com

17 years, 10 months

Added E-Mu Midi1x1 adapter, now entire sound system doesn't work!

by david

Yesterday it worked - could read and play MIDI through my keyboard, or fluidsynth, and play regular audio stuff. Today, when I started up the system, KDE tells me: > Sound server informational message: > Error while initializing the sound driver: > device: default can't be opened for playback (No such file or directory) > The sound server will continue, using the null output device. I use ALSA and the system is usually set for Autodetect, but get the same results if I select ALSA. I should have known that nothing really works "out of the box" with Linux ;-) What the hey happened and how can I fix it? Running Debian testing. Did not update anything between the time it worked and now. -- David gnome(a)hawaii.rr.com authenticity, honesty, community

17 years, 10 months

BCF2000

by Kevin Cosgrove

Hi, A bit over a month ago my BCF2000 was working just fine. I didn't have to do much special with it, just plug it in via USB, turn it on, and put it into "Logic Control" mode. Then it would show up in /proc/asound as card3. But, now it doesn't show up in /proc/asound. No messages appear in /var/log/messages. Where should I start to troubleshoot this? Thanks.... -- Kevin

17 years, 10 months

Digital Audio Interface

by Ricardo Lobo

Hi People, I'm trying to buy a Digital Audio Interface that works on Linux (Ubuntustudio). I just came from the freeBoB site and I'm thinking in buying the Edirol FA-101, who thinks this is the best option? thanks, Lobo

17 years, 10 months

Horgand 1.14

by David Baron

On my Debian Sid box, the program fails to start: Jackd not running: horgand 1.14 - Copyright (c) 2003-2007 Josep Andreu (Holborn) Try 'horgand --help' for command-line options. mkdir: cannot create directory `/home/david/.horgand': File exists horgand: interval_inline.h:52: snd_interval_single: Assertion `!snd_interval_empty(i)' failed. Aborted Jackd running: horgand 1.14 - Copyright (c) 2003-2007 Josep Andreu (Holborn) Try 'horgand --help' for command-line options. mkdir: cannot create directory `/home/david/.horgand': File exists cannot open audio device plughw:0,0 david@d_baron:~$ horgand That preexisting .horgand directory has a few .wav files, a rhythm list and those .horeb banks.

17 years, 10 months

Black/Death Metal vocals

by leslie.polzer＠gmx.net

Hello again folks, has anyone got some tips on Vocal F/X to achieve the voice typical to Black/Death Metal music? I'm interested in performing them, but don't want to ruin my voice. So perhaps there's a nice vocoder carrier for this, or a certain plugin chain? Lots of thanks. Leslie -- Personal homepage: https://viridian.dnsalias.net/~sky/homepage/ gpg --keyserver pgp.mit.edu --recv-keys DD4EBF83

17 years, 10 months

Re: [LAU] recorded using arecord, plaback seems a bit fast

by H. S.

On 10/23/07, Peter Hartmann <peter(a)hartmanncomputer.com> wrote: > > Sounds like you recorded at 44.1 and are trying to playback at 48. > Have you tried changing the project sample rate in audacity? (at the > bottom left) > > > Peter Yes, that is what I thought too. But I used the "-f dat" option while recording, which according to arecord's manpage should have given me 48000 Hz sampling rate. Based on this, I had converted au->flac by specifying 48KHz sampling rate. In audacity I had to reduce the speed (Effects menu) by around 8% to make the audio replay properly ... this corresponds to 44.1 KHz. (If I forced audacity to 44.1 KHz from its GUI (lower left), it wouldn't play the track at all) So the "-f dat" option of arecord actually recorded at 44.1 KHz and not at 48 KHz !? Here is the exact command that I used: $> arecord -D plug:hw:1 --duration=6300 --file-type au --format=dat --nonblock `date +%Y%m%d%H%m%S`.au thanks, ->HS

17 years, 10 months

[ANN] a2jmidid version 2 released

by Nedko Arnaudov

a2jmidid is daemon for exposing legacy ALSA sequencer applications in JACK MIDI system. It is based on jack-alsamidi-0.5 (jackd alsa seq midi backend) by Dmitry Baikov. The main purpose is to ease usage of legacy, not JACK-ified apps, in JACK MIDI enabled systems. New in this release is addition of configure script (autotools) that enables compatibility with different JACK MIDI API variants. Planned features/improvements: * One JACK client per ALSA sequencer client * More control on what ports to bridge (currently bridging is fixed to non-hardware ports). * Real daemonization with log file, init.d script, etc. If someone wants to contribute please, contact me, or send patches, or request inclusion (Gna! a2jmidid project). As usual, packagers are more than welcome too. Homepage with screenshots: http://home.gna.org/a2jmidid/ Tarball download: http://download.gna.org/a2jmidid/ -- Nedko Arnaudov <GnuPG KeyID: DE1716B0>

17 years, 10 months

Persichetti MIDs

by Dave Phillips

Greetings: http://linux-sound.org/midfiles/persiket.tar.gz The README describes the package. It fails to mention that the MIDI files are all Type 1. Best, dp

17 years, 10 months

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Linux-audio-user October 2007