Linux-audio-user January 2010

linux-audio-user@lists.linuxaudio.org

166 participants
153 discussions

Resampling 48000hz samples down to 44100hz?

by Andrew C

Hey all, Anyone know any quick ways to resample a large amount of .wav files with spaces in them from 48000hz to 44100hz while still keeping the same wav names? Thanks, Andrew Coughlan.

14 years, 10 months

My first music post

by Erik de Castro Lopo

Hi all, I've been posting here for a long time, but as a first for me, here is some music I was involved with in the early 1990s, a band called Golden Section: http://www.youtube.com/watch?v=_RwRo3dMVJo I played bass guitar in this and the first real glimpse of me (much, much younger) is at 1:10. This was recorded live at a huge beer hall on a small handheld video recorder. The sound is suprisingly good although the bass is almost inaudible. I absolutely loved playing this band. Cheers, Erik -- ---------------------------------------------------------------------- Erik de Castro Lopo http://www.mega-nerd.com/

14 years, 10 months

MIDI & real instruments combined in Ardour

by Ectropic Harmony

I'd like to include some synth, piano, and drums (all MIDI) in a recording of some music that I'm writing. The synth & piano parts are both to be played on a USB/MIDI keyboard controller connected directly into the computer. The drum set part is to be played on a MIDI drum set (with sound module) directly into Delta 1010 unit (MIDI) and a mixer (via drum set's "Main Outs", 2 simultaneous tracks). The synth part (USB/MIDI) will be heard along with an acoustic guitar part that will be coming from the mixer & Delta unit. While the synth is still playing, the drums (MIDI & "live") and bass guitar will enter partway through. The synth part will occur again later while other "real" instrument parts are going on. The piano part (USB/MIDI) will follow along the same lines, interacting with the live/real instruments (guitars, bass) and the drum set (MIDI/"live") in various sections of the music. It appears that the drum set part, via the "Main Outs" into the mixer, will likely be fairly easy to incorporate into the mix. However, I'm not sure how to pull off playing the drum set part only 1 time and recording it simultaneously into both the MIDI data stream, via Delta 1010, and the "live" (Main Outs), via the mixer. I've googled this and I came across a couple pages mentioning that while Ardour supports MIDI now that it is still in early development. It seems like a possible solution, or temporary work-around, might be to create the MIDI parts in another program and to feed that MIDI music data into Ardour. Is that the right idea? How might that be done? It seems like there are a variety of possibilities with the great audio software that is available in Linux. :-) In addition to how to get the USB/MIDI keyboard/controller MIDI data into the mix (hopefully eventually via Ardour), how might the drum set part be created on both MIDI data and the "Main Outs" audio at the same time? The drum set part will already have its own data/"sounds" via the sound module, very nice professional sounds too, so I'm hoping I just need to send those signals into a MIDI program and then from that program into Ardour. I just hope I can record the drum part 1 time, sending the "Main Outs" to the mixer, while also sending the MIDI data to a MIDI program. The synth & piano parts - they're coming from an M-Audio Axiom type of keyboard, it seems to be quite popular in the Linux world so I went for that ;-) - though the keyboard doesn't have it's own "sounds". I'd like to use a MIDI program that creates very nice synthesizer-type sounds and very convincing/authentic-type piano sounds. I've experimented with a few random synth-type and piano-type sounds from random programs, cannot remember which ones (there are a lot), but it was difficult finding convincing sounds. A description of the synth type sound I'm looking for - a type of "milky metallic" sound, perhaps reminiscent of strings but it doesn't have to be. Something you might hear on a synth track by Joe Satriani, Steve Vai, or John Petrucci. A description of the piano type sound I'm looking for - a "refreshing" kind of acoustic grand piano, just a touch of the bright timbre mixed in but definitely not too much, as authentic as possible. Something you might hear on a live concert track by Mike Keneally or Jordan Rudess. If I can pull off this combination of USB/MIDI, MIDI/"Main Outs", and live/acoustic/electric instruments all into 1 piece of music then I'll be able to pull off a recording of what will turn out to be some exciting music. :-) Thank you for any assistance with this! E.H.

14 years, 10 months

Delta 1010 Power On and Off (Breakout Box)

by Ectropic Harmony

Perhaps I'm missing something but, is there a power on/off button or switch on the M-Audio Delta 1010 breakout box? Is it okay to simply plug it (the power cord into the back of the box) in to turn it on and unplug it (the same power cord) to turn it off? I'm hoping that kind of a "cold" power on/off doesn't damage anything. I know that it would be bad to unplug the cable (parallel?) that leads to the PCI card, at least while the computer is on. There was a pretty big sticker on the breakout box, at purchase, that gave that clear warning. So, definitely not doing that. Does anybody ever just leave their Delta 1010 breakout box power supply plugged in all the time? When I plug mine in, turning it on, the device tends to get warm pretty fast, which leads me to believe that perhaps after prolonged periods of time it might get very hot. If it's safe to just plug it in when using it and unplug it when not using it, then I'll keep doing that. It's kind of silly that the device doesn't actually come with a simple Power On/Off button or switch. ;-) Oh well. (Or maybe I'm not seeing it?)

14 years, 10 months

Re: [LAU] Delta 1010 Power On and Off (Breakout Box)

by Leo

On Wed, Jan 27, 2010 at 3:20 PM, teza <tsaliou75(a)orange.fr> wrote: > Leo a écrit : > >> This is from Canadian PA systems maker Yorkville. >> >> first one is basic with easy words written (not too technical) >> >> http://www.yorkville.com/downloads/other/pabasics.pdf >> http://www.yorkville.com/downloads/other/paguide.pdf >> >> I recommend to read at least "pabasics.pdf" >> >> Leo >> Really good >> >> > THANKS FROM pARIS > tEZA > hey. you are welcome also here its a link for the basic guide in french http://www.yorkville.com/downloads/other/pabasicsfr.pdf

14 years, 10 months

Ardour 2.8.4 ?

by fons＠kokkinizita.net

I installed Ardour 2.8.4. (6077) on a new Arch system today and it's showing some strange things. * On newly created sessions, the mute buttons affect the meters but not the signal. * When following Jack transport: - Play for a few seconds - Use the 'rewind to zero' on e.g. qjackctl - Ardour goes to zero, and restarts playing, but the position counters remain at the place wher the 'rewind' was done, until either - position goes beyond this place - or you stop. Anyone seeing similar things ? I just want to find out if this only affects the Arch binary, or all systems. Ciao, -- FA O tu, che porte, correndo si ? E guerra e morte !

14 years, 10 months

Questions on New Recording Gear

by Ectropic Harmony

I've recently started adding new gear to my studio, which isn't much beyond a room in an apartment converted into a music studio initially used for lessons but will soon be used for recording. Although it's not sound-proofed and is only 1 room (not a control room with studio, or anything like that) it's at least a start. Perhaps in the future, the next time I move, it'll be easier to set up a more controlled recording environment. In any case, I have a question about the gear and any general points on where to start with things. At the moment I'm still waiting for some of the gear to arrive via mail but it should all be here by the end of this week. Here's the list... Instruments: Acoustic & electric guitars Bass guitar Electronic drumset (a very nice Roland, MIDI but also has direct outs/main outs (1/4" TRS)) USB/MIDI keyboard (M-Audio Axiom 49) Various other instruments, percussion, winds, strings Misc. gear: Amps (combos, i.e. Marshall, TubeWorks) Power amp (not currently using this, it's a 4 channel PA) Recording gear: 4 mics (AT2020s) Mixer (Mackie 1642-VLZ3, 16 channel 4 bus analog mixer) Digital audio interface (M-Audio Delta 1010) Computer (64-bit quad core 2.6GHz CPU, 4GB RAM, 3TB space; running Ubuntu Studio 9.10) The new equipment is the recording gear - specifically the Mackie mixer, the Delta 1010 audio interface, and the mics. I have a variety of questions that will all, naturally, come to mind as I begin digging deeper into this new equipment, though for starters I'll ask one simple question... Where would you suggest I begin? I'd like to record & compose. I'm not familiar with the most effective music composition software for Linux that works well with USB/MIDI keyboards. As far as recording, I'm interested in using Ardour. I understand I have to set up JACK. The Ubuntu Studio system comes with a handful of packages pre-installed. I'm not sure where to begin with all of those programs, or which ones might be the "main ones" that I'll be using for recording purposes and then for composing purposes. Thank you for any input on any of this!

14 years, 10 months

[ANN] KMid2 0.2.0 released

by Pedro Lopez-Cabanillas

KMid2 is a MIDI/Karaoke player for KDE4. It runs in Linux, using the ALSA Sequencer. KMid2 plays to hardware MIDI devices or software synthesizers. It supports playlists, MIDI mapper, tempo (speed), volume and pitch (transpose) controls and configurable character encoding, font and color for lyrics. The graphic views include a rhythm view (visual metronome), a channels window with solo/muting controls and instrument selectors, and a piano player window (pianola). KMid2 runs in Linux, using the ALSA Sequencer. Changes in this release 0.2: * External soft-synths can be automatically launched at startup. A new page including FluidSynth and TiMidity++ settings has been added to the configuration dialog. * Each channel may be labeled in a text field besides each channel number. * New "lock instrument" button in the channels window to override the song's predefined instruments. * Settings per song can be saved and automatically retrieved, including text encoding, volume, pitch, rhythm, channel labels and fixed instruments. * The sample songs location is added to the places navigation panel in the open dialog. * Several other usability enhancements. More info: http://userbase.kde.org/KMid2 Copyright (C) 2009-2010, Pedro Lopez-Cabanillas KMid2 is free software distributed under the terms of the GPL v2 license. Downloads * Source packages http://sourceforge.net/projects/kmid2/files/ * openSUSE RPMs, and Ubuntu DEB packages: http://software.opensuse.org/search?baseproject=ALL&q=kmid2 Regards, Pedro

14 years, 10 months

LAC2010: Paper deadline coming closer

by Frank Neumann

Dear all, the deadline for submission of papers for the Linux Audio Conference 2010(*) is coming closer (February 14th, 2010), and (like last year) the amount of submissions so far is..quite small. However, without papers and presentations this kind of conference cannot exist. I believe that most of the prospective paper submitters out there will probably wait until the very last minute (I recall in one case there was even a bit of a debate about "what exact time, and what time zone please?" :-), but it would be helpful to get an idea of the upcoming submissions. For this reason I am asking that if you plan to submit a paper, to give us/me a short notice (title, topic) of your planned paper (direct reply, no need to send that information to any of the addressed lists). This would help us in planning the next necessary steps. By the way, we are not considering to extend the paper deadline this year. Please feel free to forward this mail to whatever people/mailing lists are suitable. Regards, Frank Neumann, on behalf of the LAC2010 organization team (*) See http://lac.linuxaudio.org/2010

14 years, 10 months

delta 1010 background hiss

by David Santamauro

Hello all... after getting a test machine (32 bit / fedora core rt kernel from planet ccrma) up and running with my delta 2496 configured correctly (with your help) and recording. I decided to take the plunge and setup my larger server which was dedicated to ms windows audio. This is a 64-bit machine with 2x-quad cores and 8GB of main memory. In it is also my main interface, the delta 1010. I setup a dual-boot with the exact same configuration that I did on my test machine. Everything is functioning as on the test machine with one notable difference: The delta 1010 has ~-30db of constant background noise. This background noise doesn't exist in the windows boot. I thought it might be my older mixer (from which 8 direct outs go into the delta 1010, but after turning the mixer off and unplugging everything (i.e., no inputs to the delta 1010), there is _still_ this hiss. I would like to attribute it to system noise but then why don't I hear this when I boot into windows? I'm basically at a loss here. I have jack running, routes to and fro software/hardware appear to be entirely correct (I can record and play and monitor). Just to conclude, I have the minimal going: qjackctl up and running, jackd started and the envy24control mixer up and the mixer shows this hiss. Any help here would be very welcome. Thanks in advance. David

14 years, 10 months

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Linux-audio-user January 2010