Linux-audio-user July 2009

linux-audio-user@lists.linuxaudio.org

124 participants
114 discussions

by Bill Allen

Here are a couple of new songs that I've done recently with Ardour, Hydrogen, ZynAddSubFX, AMS, and some ladspa plugins. They are pretty different from each other so if you don't like the first try the other :) http://www.k2bea.org/Home/The_Tree_of_Life.ogg http://www.k2bea.org/Home/Reflections-Apples-low.ogg Best regards, Bill

14 years, 9 months

Udev error with CCRMA rt23 kernel

by M Watts

On a fresh Fedora 11 install (HP nc8000 laptop, 1.6 Ghz Pentium M), the Planet CCRMA kernel-rt-2.6.29.6-1.rt23.2.fc11.ccrma.i546.rt freezes on boot with: Starting udev: end_request: I/O error, dev fd0, sector 0 Buffer I/O error on device fd0, logical block 0 Isn't fd0 a floppy drive? There isn't one in this machine. There /is/ one across the room on a shelf -- maybe rt23 doesn't like that ;) I disconnected all usb drives and peripheries, but no luck. It's not a major drama, as 2.6.29.5-1.rt22.1.fc11.ccrma.i586.rt works perfectly, as does stock Fedora kernel 2.6.29.5-191.fc11.i586.

14 years, 9 months

Julien Claassen New world

by Paul Neaveill

Sorry for the negative review here on the New World. Strengths: The layering was fantastic for the most part. The second minute or so and following of the layered brasses had plenty of potential for something even bigger. Weaknesses: Was not sure if those were supposed to be water waves or static or what it was, but found it distracting. Saw quite a bit of potential with that. Then, when vocals kicked in, kinda lost me from there. The first 2-3 minutes of the song seemed to lack cohesiveness. Possible Improvements: Assuming those are waves in the first part of the song there, having them pan back and forth would be great. From there, having that either form the backdrop (sound canvas) or fade into the the real sound canvas. Part of that canvas needs to stem from the purpose or aim of the song. Following that, tie together the various parts. For example, that noise in the beginning could be formed better into waves and fading in those brasses. Then build the vocals on top of that. Hope the critique was not too harsh. Would love to hear a "re-mix" of it. The "other" Paul N.

14 years, 9 months

Hello LAU-world

by Carlos Sanchiavedraz

Hi all. It's been a long long time (years) since I suscribed to this list (in addition to following your articles, blogs and music and using apps and plugins), and I always thought that one day I should, not only reading and learning "in the dark", but also contribute with my two cents, at least with what I can. But you know, it's hard to take that step with such a level of knowledge and experience in here, given that DSP development and kernel aren't my area of expertise. Maybe, some might know me for any of the projects I am/have been involved (hi "Packet-In-ers" friends), but that's not the point now (and I don't like talking about myself). So, in short, I just decided to say hello, express somehow my admiration and gratitud, and thank you all for helping me to go to bed with something more learned ;). -- Carlos "Sanchiavedraz" * Musix GNU+Linux (Musix 2.0 beta) * http://www.musix.es

14 years, 9 months

blog post: stable linux audio

by Josh Lawrence

Hi everyone, I've written a blog post about my efforts to get an easy-to-maintain stable Linux system up-and-running, you can find the post here: http://hardbop200.blogspot.com/2009/07/stable-linux-audio-finally.html No surprises here, just some simple instructions on how to turn Ubuntu Hardy into a multimedia studio, aimed at those who don't know where to start. I would appreciate any criticism you might have, comments, etc. -- Josh Lawrence http://www.hardbop200.com

14 years, 9 months

jackd version 0.116.1 - sampling rate of 44099 hz?

by Justin Smith

I have an ensoniq audiopci card that I have been using successfully at 48000 hz for a while now. I have just started working on a project with prerecorded material at 44100 hz, so I reconfigured jack in order to avoid needless sample rate conversion. Somehow jack thinks that my card is running at 44099 hz, so it is resampling the source material anyway. Why would my card be running at 44099 hz, is this a software or hardware problem? I am going to just edit the wav headers to say 44099 so they agree with the engine sample rate for now, but would be interested to know what the source of this weirdness would be.

14 years, 9 months

Does the Edirol UA-101 work well at 192 kHz/24 bit?

by HamRadio

Hi, I'm looking for an external soundcard capable of recording and/or playing at 192 kHz and 24 bit, well supported by linux/alsa drivers, to be connected to my laptop, which has both usb-2.0 and firewire. Since I'm an ham radio, my call is ik7tad, I need this high sampling frequency because I'd like to use this card mainly for the "software defined radio". Googling on the web and looking in the source tree of recent kernels, I'm not sure if the Roland/Edirol UA-101 is *well* supported. Anyone here can tell me if this card works well at 192kHz/24bit with Linux? Perhaps can you also suggest me another card with these specifications? Can firewire soundcards be considered too? Many thanks for your opinions, experiences and comments.

14 years, 9 months

New film: This is Art..

by Norval Watson

Hi there, Here is my new film - "This is Art.." A nine minute rollercoaster ride through the great museums of Paris. Streaming on Vimeo: http://vimeo.com/5586288 Streaming on YouTube: http://www.youtube.com/watch?v=-jEu3uWAdcg&feature=player_profilepage And for better quality.... Free .ogg download: http://www.longforest.com/video/art_3.ogg Free ..mp4 download: http://www.longforest.com/video/art_3.mp4 Music done with Freewheeling, Fluidsynth, Hexter, WhySynth, and Phasex. Edited with Cinelerra. Cheers, Norv ____________________________________________________________________________________ Access Yahoo!7 Mail on your mobile. Anytime. Anywhere. Show me how: http://au.mobile.yahoo.com/mail

14 years, 9 months

Frequency-response analyzer for Linux?

by Ken Restivo

I have a couple DSP-for-dummies questions. I'm still intrigued by the idea of getting a proper Auto Wah-Wah sound going. I like the approach of building one out of LADSPA plugins. My question is this: what tools would I use on Linux to analyze the frequency response and characteristics of the many, many LADSPA filter plugins, so as to decide which has the response closest to a real wah circuit (i.e. a lowpass with a resonant peak just above the rolloff point)? What I'm going for is this: http://www.geofex.com/Article_Folders/wahpedl/wahped.htm I don't know squat about DSP, otherwise I might just try coding something up; the LADSPA spec looks pretty straightforward. -ken

14 years, 9 months

Re: [LAU] Jack, Ardour, and the Gentoo Pro-Audio Overlay

by sonofzev＠iinet.net.au

>All this will hopefully change in future and was discussed in some >length on the LAD list some time ago. Until that changes I personally >recommend to compile jack without dbus unless you want to use laditools. > I use Gentoo pro audio overlay, I have found if using FFADO i seem to need to have the dbus USE flag turned on. > >> Also, I'm new to the whole live ebuilds thing. I see that the >> overlay offers Ardour, Jack, and many other things in the form of >> direct CVS snapshots. It seems that these are prefered, however, it >> looks like they often require unmasked versions of dependency >> programs. Should I be afraid of that? For example, the live ebuild >> for Ardour seems to be trying to pull in a version of aubio that is >> masked for amd64, though I didn't see a bug in the bug database >> explaining why. Should I simply unmask any package that is demanded >> of a program in the overlay on the basis that overlay programs are >> basically bleeding edge anyway? > >I can't help you with that specifically since I never used gentoo but >as a general guideline: stay away from it if you don't know what you're >doing. A CVS (or any version control system for that matter) checkout >might be totally broken and there's no guarantee that it will even >compile. > Live ebuilds are always masked for this very reason. However you may find that some things are worth unmasking. (I have found that for my hardware I need to use the live ebuild for FFADO and Jack to get the best results.. You won't find reported bugs on Gentoo for live ebuilds as they aren't really supported but the bug you find may be worth checking for and reporting upstream (if you intend to help the particular project)... BTW Ardour 2.x live ebuild is relatively stable but not 3.x.... I highly recommend you join the pro-audio overlay mailing list for specific discussion around this overlay... (We won't bite :)

14 years, 9 months

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Linux-audio-user July 2009