Linux-audio-user March 2009

linux-audio-user@lists.linuxaudio.org

120 participants
123 discussions

by Josh Lawrence

Hi all, (I'm away from my machine now, so please let me know if I'm not giving enough information and I will correct later...) I have a UA-25EX that I am trying to use with Ubuntu Hoary. jack loads just fine, but I cannot see any reference to the MIDI ports under the "ALSA" tab. I've found that the device itself only works with the Advanced switched to "on"; I've also made sure that the module snd-seq is loaded. Is there anything else I need to check, something I'm overlooking, etc? -- Josh Lawrence http://www.hardbop200.com

15 years, 8 months

ambdec

by alex stone

I'm having a journey of discovery here with Ambdec, and i've made some presets of sorts, that are at least....unique (Humour to the fore.) A quick question. For a medium orchestra template driven by Lsampler, with 60 outs (30 stereo pairs), will i need multiple instances of Ambdec? (As a coarse experiment, 10) Or am i approaching this from the wrong direction? I've been poring over the manual, and some online reference material, and get the impression, for a complete orchestral template, that i'll need more than one app/preset/image, as part of building a complete orchestral soundscape. Alex. -- Parchment Studios (It started as a joke...)

15 years, 8 months

jkmeter user man or a simply guide?

by Leonardo Palomares

I'm using sidux pontos, and after a small battle finally could install jkmeter using a deb from here: http://archive.ematech.fr/dists/hardy/others/ before that, tried using the files at: http://www.kokkinizita.net/linuxaudio/downloads/index.html but no luck. ok, README file got this examples: jkmeter -type k14 : K14 scale instead of K20 jkmeter -A : Ambisonic (4ch) mode jkmeter -C : Add a stereo correlation meter so I can run it, but the readme says: "Added options:" are ther other options? also: is there a way to calibrate (do I need to calibrate this meter?) can i have vertical meter? i really like this meter, and if I learn to use it, it will be way better. Thanks for reading. Leo

15 years, 8 months

Converting Midi file data to play on guitar

by Nathanael Anderson

I'm working on some python scripts to mangle midi input data from a file, and am hoping I can get some input from others that have thought about it as well. These are some major issues and possible solutions I've seen. 1. When a chord is seen in the midi file: the correct voicing of the chord must be found on the guitar neck, and where multiple, which to use must be decided. 2. When picking notes: if based off a chord, that chord should be identified, so the user knows how to position their hand for the playing to feel natural. 3. When playing lead riff's, try to smoothly move between scale positions, and not stay on just 1 string. Sofware I'm workikng with pyrtmidi: live midi input data pythonmidi: file midi input data pychorelib: identify chords based on notes played in midi files/streams Sofware I've looked at that somewhat relates to this: dguitar kguitar neither dguitar or kguitar support any intelligent handling for guitars to actually make loading a midi file and playing from it useable. Why python? 1. I want to be able to have the output data from this be useable by other software. 2. I'm playing around with some idea's in blender, hence using python makes sense. Why not python? 1. I'm a bit new to python 2. I'd rather be coding in perl ;) Any feedback, links to similar work, or ideas are greatly appriciated. Nathanael

15 years, 8 months

Script

by alex stone

A quick and somewhat ruefully embarrasing question. I'm going through my old executable scripts, rebuilding an auto startup for a sequence of apps and associated templates for my new debian 32bit build. But i'm stuck on a really simple one i haven't used in a script before. Jconv. I'd like to do the following: blah@blah $ cd ir blah@blah/ir $ jconv concert3.conf as an automated script, so i need to cd to the relavent directory, then provoke jconv into all it's formidable glory. I'm going through my bash commands manual, but can't find out how to cd to a directory and enact a command, all in one go. I know this is simple stuff, so apologies in advance for the really dumb question. Alex. -- Parchment Studios (It started as a joke...)

15 years, 8 months

>= 2.6.27 RT ETA?

by Ken Restivo

And here is the next installment in the saga of trying to get Ingo RT going on my Asus EEE. I successfully built and ran the 2.6.26.8-rt12 with the alsa_seq patch. It ran. The problem is that neither the Ethernet (atl1e) or wireless (rt2860sta) work. So I pretty much had to reboot back out of it immediately. It appears that the atl1e driver I need to get my Ethernet working, is not supported AT ALL in 2.6.26. The Debian Lenny kernel 2.6.26 has some kind of backport of all kinds of stuff from 2.6.27, including the atl1e I need. I could try to reverse-engineer whatever it is that the Debian maintaners have done to get atl1e backported (it seems they've had to fix some bugs in the backported driver too), or, I could just try with 2.6.27 or higher and thus have the hardware support I need to make my netbook usable. Only problem is, it doesn't look like there is any such thing as a 2.6.27 Ingo RT patch yet. His stuff stops at 2.6.26. So now what? Any idea as to when there might be a nice stable RT kernel cocktail of the 2.6.27 or higher variety? Or am I going to have to try to figure out what portions of the Debian Lenny patches I have to apply to my Ingo-patched 2.6.26.8 kernel, and then try to get them to apply cleanly? -ken

15 years, 8 months

Re: [LAU] [LAD] [Fwd: Audio mixer recording gain control]

by adi＠drcomp.erfurt.thur.de

On Tue, Mar 10, 2009 at 10:03:59AM +0530, Viral Mehta wrote: > Hello all, Hi! > I would like to know feedback here if possible. Or is it a wrong place > to submit patches which I "think" fixes some issue in oss simulation layer? It's the wrong one. You want to read the MAINTAINERS file in the kernel source directory. HTH -- mail: adi(a)thur.de http://adi.thur.de PGP/GPG: key via keyserver Eine Party ist genau dann gut, wenn auch die anwesenden Männer tanzen.

15 years, 8 months

Enlarging audio buffers

by Norval Watson

Does anyone have any info on enlarging audio buffers? Especially for Audiophile 2496 (snd-ice1712 driver). I need to do this to get realtime audio recording with Cinelerra. TIA Norv My blog - http://www.longforest.com Stay connected to the people that matter most with a smarter inbox. Take a look http://au.docs.yahoo.com/mail/smarterinbox

15 years, 8 months

Rumble noise from mic

by lanas

Hi all, When using the M-Audio Pulsar mic I notice a rumble sound until I touch the mic, in which case the rumble goes away. That sounds like a 'ground' problem of some sort. The mic is connected straight into a M-Audio 1010 PCI card using one of the XLRs jacks. The 1010 card also has M-Audio active speakers connected to it. The computer plugs into an electrical extension to which monitors and other devices are plugged. That extension goes to the wall plug and is of the three prong type (North America). Now, it could be that the house electrical outlet wiring is not right. Would that be the problem ? Is there any other way to solve this ? Gating the signal would hide the rumble when there's silence but that's not a solution. Thanks for any suggestions/hints/ideas. Cheers.

15 years, 8 months

(For the crafters)Swtich to choose one from four reed/pipes

by Nils Gey

This is a bit offtopic, But maybe one of you has an idea how this could be done: I'm searching for a way to build a (part) of an instrument which consists of four pipes with reeds in them (like a clarient or oboe, only with just one tone) That means: if you blow in just one of them you will hear a sound. So basically its not one but four instruments bound togehter. Each of the pipes is only 7mm bore/diameter so the four of them will fit togehter in one hand. The material is copper or pvc, still experimenting. The air will be filled in with some kind of mechanic and for all four toghether. The question now is: How can I only let one of the pipes sound? Its not needed that more than one sounds at once. But it IS needed to switch quickly (up to one second) between them and it should be possible with just one hand. After switching the state should be consistent, which means you can use your hand for other things then. Any Ideas? The nicest way would be to do it with some existing parts which can be bought, maybe for tubes or ducts. greetings, Nils

15 years, 8 months

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Linux-audio-user March 2009