Linux-audio-user

linux-audio-user@lists.linuxaudio.org

20 participants
20609 discussions

by dunk＠dunkfordyce.co.uk

hello im looking to try my hand at some midi programming - what, in your opinion, would be a simple starting point for midi + X programming? I have experience in several languages but am at a loss as to which language to use with what lib and wondered what a simple starting point might be that still yield reasonable results. I would not be attempting anything to tricky ;) ta' dunk fordyce -- ---------------------------------------------------------------- http://www.dunkfordyce.co.uk Tagline for Monday, March 03, 2003 California raisins murdered: Cereal Killer suspected dunk fordyce is d1223m @ #linuxhelp @ irc.freenode.net ----------------------------------------------------------------

22 years, 1 month

Re: [linux-audio-dev] Re: [linux-audio-user] Re: New LADSPA Hints - clarification of definitions

by Steve Harris

On Mon, Mar 03, 2003 at 05:22:06 +1100, Allan Klinbail wrote: > The reason for using a sidechain (in the hardware world) as opposed to > plugging everything inline.. is simplification of patching and > minimising the number of cables being used. > > In software there would be no reason other than aestethics to include a > sidechain as it is possible to plug modules into each other in series > without getting ground noise from excessive amounts of cabling. So Steve > you are correct it isn't really useful. Actually, this isn't quite correct. There are times when you want to process the amplitude of one signal (eg a bassline) with the dynamics of another (eg. a drum beat). Its pretty cheesy, but I dont think preventing things on aritstic metrit is a good precident ;) > > For example the distinction between the control output of an envelope > > follower and the gain reduction output of a compressor, the follower is > > inteded to drive eg. a filters cutoff, wheres the gain reduction is just > > inteded to be viewed by the user as a clue as to what is going on. > > Correct about control output. However gain reduction on a compressor > actually controls the output level or gain from the unit, it is not > simply for "the user as a clue as to what is going on".. Often when I was refering to gain reduction meters, which are simply a way of giving the user a clue (warning) what is going on, hence the distinction between that and an signal output. > compressing the resultant output may be larger than desired... When > compressing a signal, input level is often boosted to get more of an > effect from the compressor (usually this is controlled with the input > gain on the desk) which is why the output level would often be very > high.. gain reduction is a way of counteracting this. I think you mean makeup gain here. Its genreally used to boos t the signal level given a particularly heavy compression, but hypothetically you could use it to reduce too. - Steve

22 years, 1 month

[linux-audio-user] building new machine, couple simple questions

by R Parker

Hi, I'm building a new low latency + preemption patched machine. I've forgotten how to confirm that the kernel is running preemptively. It's a command to the effect of 'cat /proc/something'. Anyone know what I'm referring to? Also, can someone point me to docs for enabling/using a capabilities enabled kernel? Enabling normal user capabilities for jackd is my objective. I believe Fernando has this included in the CCRMA stuff but a quick google didn't find any docs. They're probably there. Hints appreciated. I'll search LAD archives...it's probably all there. Jan, your link to Paul Winkler's Low Lowlatency docs at boosthardware are brooken. Thanks, ron __________________________________________________ Do you Yahoo!? Yahoo! Tax Center - forms, calculators, tips, more http://taxes.yahoo.com/

22 years, 1 month

[linux-audio-user] batch processing of time stretching

by Mark Knecht

Hi, Ardour recently added a feature for time stretching audio, which as I understand it, was Open Source code from somewhere else. I have about 2000 Acid Pro loops that would be more useful to me if they had slightly different properties than they were shipped with. Is anyone working on a batch processing mechanism for dealing with many, many wave files? Sonic Foundry offers this in their programs. Is there any equivalent in Linux. (I'm not talking about writing scripts or bash processing or anything like that.) Thanks, Mark

22 years, 1 month

[linux-audio-user] Terratec DMX 6-Fire

by Sergi Roig

Hi all, I'm having some trouble using my card's (Terratec DMX 6Fire 24/96) front panel. When I plug my turntable to the phono connectors in the front panel, I can hear the record playing, but I'm unable to record it. I try to record with Audacity, tried all possible combinations in the Patchbay / Router at the envy24 control panel, and nothing's getting recorded. I'm using SuSe 8.1 with kernel 2.4... any clues? thanks! Sergi Roig _________________________________________________________________ The new MSN 8: smart spam protection and 2 months FREE* http://join.msn.com/?page=features/junkmail

22 years, 1 month

[linux-audio-user] [OT] venting re: Mandrake 8.2

by Dave Phillips

Greetings: Sorry to be a pain, but I'm having so much trouble installing and configuring Mandrake 8.2 that I'm beginning to doubt whether it can be done. Here's a partial list of my trials and tribulations: 1. The CD drive is actually a Toshiba DVD drive. Mandrake installed all right from it but afterwards is unable to read from any disc I insert. All I get is an uninformative "input/output error". 2. The sound configuration is a joke, right ? I boot into KDE and hear the KDE tune just fine, but when I try to run any bundled sound application (XMMS, MIDI synth, etc) I get an error saying that the output device is unreachable. When I test sound using the Drake tool it says it's playing an 8-bit sample but I hear nothing. The tool asks only if you do or do not hear the sample, it offers no advice on what to do if you don't hear anything. 3. The Internet configuration informs me that I have no connection even when I do. 4. The GCC 2.96 is weird, yes ? When I ran ./configure for the latest ALSA I get an error telling me that the C compiler cannot produce executables. This, whether I'm normal user or root. Whafug??!! So is it just me or are these well-known problems with Mandrake ? I'm setting up two machines here, both experience the same problems with Mandrake 8.2. I'm going to reinstall it once more then I'll give up and move on to Red Hat. The only reason I'm installing it at all is because the client wants it. Any and all advice will be vastly appreciated ! Best regards, == Dave Phillips The Book Of Linux Music & Sound at http://www.nostarch.com/lms.htm The Linux Soundapps Site at http://linux-sound.org Currently listening to: John Coltrane, "After The Rain"

22 years, 1 month

[linux-audio-user] Best list for Linux MIDI questions?

by Larry Troxler

Hi all, I asked this once a couple of years ago, but not only do I not remember the answer (I think it may have been it's ok to post here but we should really rename the list), but the answer may have changed since then. For Linux MIDI topics (not audio, but MIDI), what would be the most appropriate list to post on? For my purposes, I think alsa-user since ALSA is what I use. Any thoughts? I take it that there is not a linux-midi-users list! Larry

22 years, 1 month

[linux-audio-user] [ANNOUNCE] tapiir-0.7.0

by Maarten de Boer

Hello, I just released a new version of tapiir. Tapiir now supports jack. Tapiir can be found at http://www.iua/~mdeboer/projects/tapiir/ Tapiir is a simple and flexible audio effects processor, inspired on the classical magnetic tape delay systems used since the early days of electro-acoustic music composition. It provides a graphical user interface consisting of six delay lines, or "taps", which can introduce an almost arbitrarily big or small delay to their inputs and can be feed back to each other. A wide set of effects can be easily achieved by properly configuring and connecting the delay lines: complex echo patterns, resonances, filtering, etc. Delays, interconnections and gains can all be controlled in real time. Maarten

22 years, 1 month

[linux-audio-user] Slightly OT

by Jan "Evil Twin" Depner

I know that there are quite a few musicians on this list so I thought they might be interested in this (if they didn't already know about it). I was reading an article yesterday (I don't remember where) that was talking about the BSA fining businesses for unlicensed software. Lo and behold, the first business cited (for 8 unlicensed copies of M$) was Ernie Ball/Music Man. Apparently they got stung for $90,000.00 US. The article stated that Ernie Ball immediately switched to "open source" and never looked back. Being a curious person, I sent an email to Ernie Ball to find out what "open source" meant. The answer is Red Hat Linux. It's nice to see a fairly large music business getting the message. It appears that the BSA may be one of open source's biggest allies. Jan

22 years, 1 month

[linux-audio-user] Interrupt sharing question

by Larry Troxler

Just a quick question. After installing Redhat 8, I'm a bit concerned by the follwing line in my /proc/interrupts: 10: 476 XT-PIC usb-uhci, usb-uhci, EMU10K1 Aside from the extreme nausea resulting from learning that my sacred MIDI port is being put in the same office as the disgusting mundane usb port, is this a performance issue if I'm not actually using the usb port? I suspect there is a bit of a hit because the interrupt handler now has to poll all the sources, but I maybe not - I understand the principles of interrupt handling but not the specifics of the PCI bus or the linux kernel. So do I need to do something about this, or not? Larry

22 years, 1 month

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Linux-audio-user