Linux-audio-user September 2009

linux-audio-user@lists.linuxaudio.org

143 participants
148 discussions

[LAU] Ext3 or JFS (or other) for linux audio?

by Ken Restivo

I enjoyed this article about building a monster storage box: http://blog.backblaze.com/2009/09/01/petabytes-on-a-budget-how-to-build-che… It recommends using JFS for a file system. Wikipedia says the advantage of JFS is that it is good for a variety of sizes of files, from very small to very large. For Linux Audio use, what filesystem do you recommend? I'll be storing mostly WAV files, lots of little XML, gzipped-XML, and text files, teeny MIDI files, and some massive MPEG videos. I've been using ext3 for years, just because it's the default and I'm used to it. But I'm formatting a new 1TB drive for linux audio use, and wondered if I might should explore some of the other options out there. Advantages/disadvantages of using a non-ext3 filesystem for linux audio? -ken

16 years, 4 months

[LAU] Command-line midi player with fast forward, pause, rewind?

by Ken Restivo

I'd love to find a command-line MIDI file player that will use ALSA MIDI (not its own internal synth), and also will accept arrow keys or some other key commands on stdin to fastforward, rewind, pause, play, etc. There seem to be a ton of MIDI players for the command line, but they all seem to not be interactive. I can't seem to figure out if ecasound can do the fast forward and rewind stuff, and I find Timidity to bewildering to contemplate. -ken

16 years, 4 months

[LAU] Rui Gui questions...

by Grammostola Rosea

Hi, Just a little thing. When using qjackctl or qsynth, the app always asked if I am sure, to restart or quit. For example: New settings will be effective after restarting the fluidsynth engine: Qsynth1 Please note that this operation may cause temporary MIDI and Audio disruption. Do you want to restart the engine now? In Kde4 apps you often got also an option box 'don't ask me again' or something like that. Wouldn't that be handy for qjackctl and qsynth etc. too? \r

16 years, 4 months

[LAU] Big_Ideas_for_a_Small_Planet - music industry power consumption

by Mark Knecht

Hi, Not Linux specific but it may be of interest to some. If you are a NetFlix subscriber and have access to the Watch Instantly feature then check out the link below to catch a 30 minute episode concerning power consumption and overall carbon footprint of the music industry as well as some things being done by recording studios and live concert companies. Cheers, Mark http://www.netflix.com/WiMovie/Big_Ideas_for_a_Small_Planet_Season_3/701213… Specifically the first episode...

16 years, 4 months

[LAU] rtirq usage

by Patrick Shirkey

Hi, If I'm running rtirq from /usr/src/rtirq folder will it pick up the conf file in the same folder or does it have to be in the /etc/ folder? Also how can I check the existing irq prios for the devices prior and after running the script? Cheers. -- Patrick Shirkey Boost Hardware Ltd

16 years, 4 months

Re: [LAU] Please listen and comment: Ajuda Gardens on AVLinux

by Kim Cascone

I love how the main melody creates tension against the harmonic structure which is made even more interesting by the odd time signature -- nice! I am reminded of an 80's art rock band from LA known as the Fibonacci's who set one of Wallace Stevens poems to music and which remains one of my all time favorite songs http://en.wikipedia.org/wiki/The_Fibonaccis

16 years, 5 months

Re: [LAU] Compression settings for speech leveling

by Ricardus Vincente

On Sat, 2009-09-05 at 05:14 +0000, Joel Roth wrote: I am here to serve. Ten years of professional engineering has gotta count for somethin. :-) Rich... > > 4:1 ratio, fast attack, medium release, and set threshold so that you > > get maybe 6 dB of gain reduction. Try that for starters. > > Thanks Ricardus, I'll experiment with this. > > > Rinse and repeat. Your mileage may vary. > > Yeah, that's how it usually goes... I think the only > way from here is up. > > Joel > > > > Ricardus. > > > > > > > Hi Audioists, > > > > > > I have some speech recorded from a lapel microphone. > > > > > > A problem is that the level rises and falls as the speaker > > > turned her face toward and away from her lapel. > > > > > > Can anyone suggest a starting point for LADSPA compressor > > > settings to even out this variation? I'm willing to > > > compromise with some pumping or wheezing artifacts. > > > > > > Regards, > > > >

16 years, 5 months

[LAU] Compression settings for speech leveling

by Joel Roth

Hi Audioists, I have some speech recorded from a lapel microphone. A problem is that the level rises and falls as the speaker turned her face toward and away from her lapel. Can anyone suggest a starting point for LADSPA compressor settings to even out this variation? I'm willing to compromise with some pumping or wheezing artifacts. Regards, -- Joel Roth

16 years, 5 months

[LAU] Using USB keyboard knobs and sliders in linux

by Matt Henley

I recently got access (on loan) to a Edirol PCR-300 USB midi keyboard. When I plug it into the computer it shows up under QJackCtl and is quite usable as a midi keyboard for the Synths that I use (ZynAddSubFX and AmSynth). The question that I have is that the keyboard has a full compliment of sliders, pads and rotary knobs which I don't know how to use for anything. Is there documentation on how to set these up to control parameters on software such as Ardour/Rosegarden/LMMS/Ingen? If so where would i find it? Do these controls go to midi channels and can they be assigned to OSC controls? Sorry for my ignorance, I just didn't know where to start. Thanks Matt

16 years, 5 months

[LAU] No work for me today :)

by Folderol

... so I'm playing about here instead. Actually I've been digging through my past work, and there is a piece I don't think I've put up here. If I'm wrong, apologies - put it down to a 'senior' moment. It is very unusual for me to cover other compositions, as I always seem to be making comparisons with the original and end up dissatified. However this one is such a well covered classic I'm not even sure what the original sounds like. So, here is my arrangement of 'Summertime' I do hope you like it. I produced this entirely with ZynAddSubFX, Rosegarden and a dumb MIDI keyboard. http://www.musically.me.uk/music/Summertime.ogg -- Will J Godfrey http://www.musically.me.uk

16 years, 5 months

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Linux-audio-user September 2009