Linux-audio-user June 2010

linux-audio-user@lists.linuxaudio.org

143 participants
146 discussions

by fons＠kokkinizita.net

Jnoisemeter-0.1.0 This is a small Jack/GUI app which you can use to measure noise levels to various standards, e.g to check the S/N, EIN or equivalent noise levels of soundcards, mic preamps and microphones. Filters: DC, Flat, 20kHz, A, C, ITU-R468, ITU-A. Detectors: ITU-R468, RMS, VU. More technical info in the README. As usual on <http://www.kokkinizita.net/linuxaudio/downloads> Enjoy ! -- FA O tu, che porte, correndo si ? E guerra e morte !

15 years, 7 months

[LAU] chino session scripting tool, version 0.03

by David Adler

chino is mainly a bash script generating scripted sessions around Seq24, pd and Ardour, along with instruments/synthesisers for sound generation. Currently supported instruments are yoshimi, amSynth and some DSSI plugins via ghostess (hexter, fluidsynth-dssi, nekobee, trivial_synth and less_trivial_synth). The user assigns any of the supported instruments to Midi channels, chino should then do the rest - i.e. start a ready-to-play session accordingly and write a script for later recovering it. Be warned, this is my first program and it is still pretty much ALPHA. Any kind of helpful feedback is very much appreciated. Tested with jack1/2 and ardour2, 32 and 64 bit. When time permits, support for more instruments will be added. This is not equally easy for all apps, they for instance need to provide a method for setting the Midi channel without user interaction. url: http://chino.tuxfamily.org tarball: http://download.tuxfamily.org/chino/chino-0.03.tar.bz2 AUR package: http://aur.archlinux.org/packages.php?ID=37192 greetings, d

15 years, 7 months

[LAU] Recording Beethoven's "Heroic"

by Giorgio - Audiophilo

Hi everybody, i just wanted to share some pictures from "Verdi" theatre in Como (Italy) where i've recently recorded Ludwig Van Beethoven's "Heroic". There were about 35 musicians, and 9 microphones, 6 on the stage to catch the "sections", 2 far from the stage to catch the natural sound of the orchestra and one dedicated to the natural reverb of the theatre. Obviously i've used Ardour on GNU/Linux :-) Hope you'll enjoy the pictures http://ubuntuone.com/p/776/ http://ubuntuone.com/p/775/ http://ubuntuone.com/p/777/ http://ubuntuone.com/p/778/ http://ubuntuone.com/p/7FG/ http://ubuntuone.com/p/7FK/ -> This is me ;-P -- Giorgio Baù Sound engineer giorgio(a)kubistudio.it www.kubistudio.it www.myspace.com/kubistudio

15 years, 7 months

[LAU] [ANN] Virtual MIDI Piano Keyboard 0.3.2 released

by Pedro Lopez-Cabanillas

Virtual MIDI Piano Keyboard is a MIDI events generator and receiver. It doesn't produce any sound by itself, but can be used to drive a MIDI synthesizer (either hardware or software, internal or external). You can use the computer's keyboard to play MIDI notes, and also the mouse. You can use the Virtual MIDI Piano Keyboard to display the played MIDI notes from another instrument or MIDI file player. Changelog 2010-06-18 0.3.2 * New D-Bus interface exposing many program features to other D-Bus clients * New Simplified Chinese language translation. Thanks to Rui Fan * German translation updates, including the program online help. Thanks to Philip Edelmann and Frank Kober * Larger shapes for switch-type extra controls, when using the custom style Copyright (C) 2008-2010, Pedro Lopez-Cabanillas License: GPL v3 More info http://vmpk.sourceforge.net Downloads http://sourceforge.net/projects/vmpk/files Regards, Pedro

15 years, 7 months

[LAU] Lucid Lynx and RT Kernels

by Jean-Yves Poilleux

Hi everyone I have a question about Ubuntu 10.04 Lucid Lynx and RT kernels. Well all kernels actually but I'm most interested in the RT ones for music. I've noticed when using my 2.6.31-10 RT kernel an error message appears on booting : "mount : mounting none on /dev failed" then everything is quite slow. This error doesn't occur when using a 2.6.32 generic kernel. Apparently, it has something to do with a new filesystem and kernel versions prior or older than 2.6.32. Does anyone know about this ? I've been searching through the internet but didn't any *good* explanation. Just bits. Thanks ! jy

15 years, 7 months

Re: [LAU] playing ogg.m3u

by Gwenhwyfaer

On 18/06/2010, Thorsten Wilms <t_w_(a)freenet.de> wrote: > On Fri, 2010-06-18 at 09:07 +0100, James Morris wrote: >> What will play ogg.m3u streams? > > mplayer. Though you might have to leave the .m3u out. You just need the playlist switch: mplayer -playlist ogg.m3u Indeed, loading it as a playlist in a GUI player might also work. Or you could try extracting the URL from it and sticking it into a "play URL" field.

15 years, 7 months

[LAU] New Bach from Aeolus and me

by Julien Claassen

Hello everyone! So , it has been too long, since I recorded the last Bach. The only solution was to finally record the prelude in G minor from the Well-Tempered Clavier Book I: http://juliencoder.de/nama/j_s_bach-g_minor_prelude.ogg and for the ogg-deficient: http://juliencoder.de/nama/j_s_bach-g_minor_prelude.mp3 This is done completely with Aeolus as the instrument and Nama as the recording executor. :-) Thanks to the most Utter Kevin I know for educating me about organ registrations. and I don't know how to express my gratitude to Fons for this beautiful instrument. I hope you like it, if that your kind of music and I'm your kind of player. :-) Warmly yours Julien -------- Music was my first love and it will be my last (John Miles) ======== FIND MY WEB-PROJECT AT: ======== http://ltsb.sourceforge.net the Linux TextBased Studio guide ======= AND MY PERSONAL PAGES AT: ======= http://www.juliencoder.de

15 years, 7 months

[LAU] playing ogg.m3u

by James Morris

Hi, What will play ogg.m3u streams? I like Aqualung at the moment, but it doesn't seem to want to play these. Cheers, James.

15 years, 7 months

[LAU] Weird level issues in MonoSynth, adding LFO?

by Ken Restivo

I've been using Monosynth DSSI synth live lately. It's a fun and low-CPU-usage solo synth. There are two problems though: 1) The level of MonoSynth is INSANELY loud, like 10dB louder than the Fluidsynths and Beatrice that make up the rest of my setup. The only hack I could find around this is to put a LADSPA amplifier effect after the MonoSynth and before the system outs, and set it to ZERO gain! In other words, just putting an amp there acts to normalize the levels, even if it has no positive or negative gain. This tells me there's some problem with Monosynth. I'd rather like to fix it in Monosynth than to do hacks like putting useless amps into the signal chain. Unfortunately I know nothing of DSP. Any idea where in the code I would look for this. 2) I really wish Monosynth had an LFO or two, assignable to the oscillators and/or VCF's. I'd be happy to add it if it were something I could understand how to do. If anyone has any pointers or advice on how to add an LFO to this synth, I'd love to hear it. Thanks. -ken

15 years, 7 months

Re: [LAU] [Alsa-user] [alsa-devel] Crash 2.6.32.x, Echo 3G, Alsa, SCSI

by F. Heitkamp

On 06/02/10 18:08, Giuliano Pochini wrote: > On Tue, 01 Jun 2010 08:25:35 -0400 > "F. Heitkamp"<heitkamp(a)ameritech.net> wrote: > >>>> I've tried some newer kernels. Still having problems with the echo 3G. >>>> This is kernel version: >>>> 2.6.32.13. The above patches posted to the linux kernel list seemed to >>>> get rid of the crashes, but evidently did not go into the main kernel tree. >>>> >>> Indeed. I've just checked 2.6.33 and the patch isn't there. It's in 2.6.34. >>> >>> If you need 2.6.32.13 you can apply the above patch to the kernel tree or >>> download ftp://ftp.alsa-project.org/pub/driver/alsa-driver-1.0.23.tar.bz2, >>> otherwise just use the latest kernel. >>> >> I tried 2.6.34. I have jack 1.9..5 installed. I was able to use >> rhythmbox to play mp3s. I could not use the echomixer app. It complained >> about a channels mismatch. > I'm running 2.6.34 now. Both a very old version of echomixer (2005!) and > the latest version I just compiled from alsa-tools-1.0.23 work fine with my > Gina3G. Please quote the error message. > > >> My goal is to be able to plug in a MIDI keyboard, or USB guitar >> interface and play along with songs etc. >> >> I plugged in a MIDI keyboard, "/proc/asound/cards" showed the keyboard >> was recognized. The keyboard has a USB and MIDI interface. >> I am not sure if they both work at the same time. I had the MIDI cable >> plugged into the Gina3G, but I could not tell if the keyboard was >> recognized. >> I compiled csound5. When I engaged it the system immediately froze and >> started spitting out: >> [...] > Ok, I compiled csound, but I don't know how to use it. How can I reproduce > the problem ? > Sorry I took so long to get back to you. It turns out Csound is not related to the problem. In this case I am only using kernel 2.6.33.5-rt23-amd64, alsa lib 1.0.2, but 2.6.34 does it too. I bring up firefox. Web pages attempt to play sound. The kernel begans doing: [ 2879.766331] allocate_pipes: ch=1 int=2 [ 2879.766332] allocate_pipes: channel already open [ 2879.766333] allocate_pipes(1) err=-11 [ 2879.766334] pcm_hw_freed [ 2.821190] pcm_analog_out_open cs=0 oc=2 r=44100 [ 2879.821266] allocate_pipes: ch=1 int=2 [ 2879.821267] allocate_pipes: channel already open ,infinitely. The system is unusable at this point and I have to Alt-SysRq-k to get back in. Let me know what other information to provide. Here is hwinfo on the system: cpu: Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz, 2400 MHz Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz, 2400 MHz keyboard: /dev/input/input0 EzKEY USB-compliant keyboard printer: HP deskjet 5600 graphics card: PC Partner VGA compatible controller sound: PC Partner Audio device storage: LSI Logic / Symbios Logic 53c1030 PCI-X Fusion-MPT Dual Ultra320 SCSI LSI Logic / Symbios Logic 53c1030 PCI-X Fusion-MPT Dual Ultra320 SCSI Intel 82801G (ICH7 Family) IDE Controller network: eth1 Tyan 82573E Gigabit Ethernet Controller (Copper) eth0 Tyan 82573E Gigabit Ethernet Controller (Copper) network interface: eth1 Ethernet network interface eth0 Ethernet network interface lo Loopback network interface usb controller: Intel 82801G (ICH7 Family) USB2 EHCI Controller Intel 82801G (ICH7 Family) USB UHCI #4 Intel 82801G (ICH7 Family) USB UHCI #3 Intel 82801G (ICH7 Family) USB UHCI #2 Intel 82801G (ICH7 Family) USB UHCI #1 bios: BIOS bridge: Texas Instruments PCI bridge Intel 6702PXH PCI Express-to-PCI Bridge A Intel 82801GB/GR (ICH7 Family) LPC Interface Bridge Intel 82801 PCI Bridge Intel 82801GR/GH/GHM (ICH7 Family) PCI Express Port 6 Intel 82801GR/GH/GHM (ICH7 Family) PCI Express Port 5 Intel 82801G (ICH7 Family) PCI Express Port 1 Intel 975X Express PCI Express Root Port Intel E7230 PCI Express Root Port Intel E7230 Memory Controller Hub hub: ATEN International Hub Linux 2.6.33.5-rt23-amd64 uhci_hcd UHCI Host Controller Linux 2.6.33.5-rt23-amd64 uhci_hcd UHCI Host Controller Linux 2.6.33.5-rt23-amd64 uhci_hcd UHCI Host Controller Linux 2.6.33.5-rt23-amd64 uhci_hcd UHCI Host Controller Linux 2.6.33.5-rt23-amd64 ehci_hcd EHCI Host Controller memory: Main Memory firewire controller: Timedia TSB82AA2 IEEE-1394b Link Layer Controller unknown: FPU DMA controller PIC Timer Keyboard controller /dev/lp0 Parallel controller Echo Digital Audio 3G Intel 82801G (ICH7 Family) SMBus Controller PnP Unclassified device PnP Unclassified device PnP Unclassified device Unclassified device PnP Unclassified device PnP Unclassified device PnP Unclassified device PnP Unclassified device PnP Unclassified device PnP Unclassified device PnP Unclassified device PnP Unclassified device Serial controller /dev/input/input2 Logitech Trackball /dev/input/input1 EzKEY USB-compliant keyboard Belkin UPS

15 years, 7 months

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Linux-audio-user June 2010