Linux-audio-user September 2010

linux-audio-user@lists.linuxaudio.org

150 participants
121 discussions

by hermann

Hi guitarix user "funkmuscle" points me to some high quality IR-files, witch can be used with guitarix or Rakarrack for example, to emulate a nice Marshal sound. I'm really impressed by the quality of this files. Redwirez gives away for free a set of the Marshall 1960A, only a Registration is needed. http://www.redwirez.com/free1960g12m25s.jsp greats hermann

14 years, 3 months

Csound, AlgoScore, athenaCL, cabel, smasher, QuteCsound, cecilia Gentoo ebuilds

by Jouni Rinne

Hi all fellow Gentoo audio users! I have made a Gentoo overlay consisting mainly of csound-related programs: csound frontends AlgoScore, athenaCL, cabel, smasher, QuteCsound and cecilia are all there, as is csound-5.12.1 itself (well, cecilia isn't really working ...yet :P ). Please see here: http://diesel.punk.dy.fi/viewgit/ (overlay installation instructions are here: http://diesel.punk.dy.fi/viewgit/?a=viewblob&p=Csound-Wii&h=5df91e31a931b0b… Enjoy! Jouni Rinne -- | me@home ~$whoami ^ ^ | "Trust me, I know what I'm doing!" | | Jouni 'Mad Max' Rinne ('x') | - Sledge Hammer | | me@home ~$man woman C " " | -------[ph34r t3h p3Ngu1n]-------- | | Segmentation fault (core dumped) | :: Last.fm user ID: l33tmmx :: |

14 years, 3 months

jack2, -c hpet ?

by Jonathan E. Brickman

I have stabilized and accelerated things a lot with clocksource=hpet on the kernel line; but I am wondering if I could get rid of my very very few remaining xruns with "-c hpet" in the jackd command line. Only thing is, jackd is reporting hpet as unsupported / not implemented. Thoughts, anyone? J.E.B.

14 years, 3 months

A performance step for Fedora 13, instead of cpufreq

by Jonathan E. Brickman

CPU frequency tuning facilities common in other distros, generally around the keyword “cpufreq”, weren’t working in Fedora 13. The ‘performance’ modules simply were not there in the standard Fedora kernels, though a few others were; but even those were not willing to run. I found this document: http://docs.fedoraproject.org/en-US/Fedora_Draft_Documentation/0.1/pdf/Powe… which led to a very different method. I don’t know some of the details; especially, I don’t know whether it actually uses the cpufreq bits which are still there in stock kernels. But it appears to serve the same function and much better, when checking parameters for CPU, hard drive, and (of course) jackd usage percentage, the advantage was glaring. The command line I used (from root) is: tuned-adm profile latency-performance Shockingly, and most happily, this setting stays put through a reboot, it simply sets a large number of lower-level items to modes for minimum latency and maximum related performance. My jackd percent-usage at rest went from 4% to 0.4%; with all apps fired up, from 15% to 10%. J.E.B.

14 years, 3 months

jack1 and jack2 (jackmp)

by Julien Claassen

Hello everyone! I was wondering: Since I had some troubles of late with my jack1, I'd like to instal jack2. But: Are they API and binary compatible? So would I have to rebuild all my JACK apps or will it still work? Kindly 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

14 years, 3 months

No sound after reinstall of libsdl1.2debian-alsa

by Louigi Verona

Hey guys! Had choppy sound in Virtual Box. Read somewhere on forums that the solution is to install libsdl1.2debian-pulseaudio. Did that (it uninstalled libsdl1.2debian-alsa). It did not help the chopping issue, plus sound from firefox disappeared. The rest of the sound seems fine. Okay, uninstalled libsdl1.2debian-pulseaudio, installed alsa package back. However, sound to firefox did not return. Can anyone please help? -- Louigi Verona http://www.louigiverona.ru/

14 years, 3 months

audacity and manychannel export

by Peter Plessas

Dear List, did anyone else encounter manychannel wav-file export in Audacity being limited to 32 channels? thanks, P

14 years, 3 months

Does the link of 2 units decrease the DSP load? (and more questions about DSP under GNU/Linux)

by Aurelien

Hello, My question is in the subject: Do the use of 2 units linked decrease the DSP load? I'm currently using a Focusrite Saffire Pro 40 with FFADO 2.1 and jackdmp on a Core2Quad Q6600 processed machine with 8 Gb RAM. The setup I use loads the DSP at 65%. If I add a new Focusrite Saffire Pro 40, chained to the first one, will the DSP load decrease? *Discussion you may not want to read* I'm at a point where I must increase the performance of my machine, as I will pass from 8 analog ins and 10 analog outs to 24 ins and 8 outs. I've tried my current setup (same softs, same machine) with a RME HDSP 9652, and came to a DSP load of 35%. I now have two options: 1. buy a RME HDSP 9652, use my Focusrite Saffire Pro 40 as a 8-Pres unit coming through ADAT to the RME, and buy 2 more Octopre or Saffire Pro 40. + : DSP load is lower + : RME clock is better than the Focusrite one + : use of a PCI device => no use of FireWire, less cables, use of stable drivers (already packaged in Debian) - : more expensive (about 1250 €) - : this setup is limited to 24 analog ins, and cannot be raised easily[1] 2. buy another Saffire Pro 40, linked to the first one, and then buying only one OctoPre. + : cheaper (about 850 €) + : this setup can be easily upgraded to a 32 analog ins[1] + : more outs and more S/PDIF ins +/- ? : DSP load decreased with link of the unit? - : DSP load for one unit is higher [1] One of my jobs is to make live sounds, and with such a system, I'm able to replace a analog mixer for FOH, coming to a solution looking like LS-9 (with better pres) and other digital mixers. Last but not least, last time I wondered about the use of DSP in GNU/Linux, I finally understood that the DSP of audio interfaces weren't use under GNU/Linux. Am I wrong? Is it always true? If yes, how does it come that for a very same PC/software setup the RME (PCI, so alsa driver) DSP load is twice lower than the Focusrite (FireWire so FFADO) one? Thanks a lot. -- Aurélien

14 years, 3 months

A Live Musician's Guide to Ardour (a beginning)

by Jonathan E. Brickman

Soliciting all input: http://linuxlive.ponderworthy.org/a-live-musicians-guide-to-ardour/ J.E.B.

14 years, 3 months

New Early Music made with Linux

by Giso Grimm

A new Early Music CD has been produced using FLOSS on Linux, mainly Ardour: Sound out my voice - Italian madrigals and bastarda music for viol consort The CD is played by the viol [1] consort "ORLANDOviols". It is available via http://www.orlandoviols.de/. A video, more or less the making of the CD, is on youtube: http://www.youtube.com/watch?v=PUx_UIcht2Y The video is completely made with Blender on Linux. Thanks to all the creative people around the Linux Audio World! Giso [1] http://en.wikipedia.org/wiki/Viol

14 years, 3 months

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Linux-audio-user September 2010