Linux-audio-user

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12 participants
20637 discussions

[linux-audio-user] suspending e-mail from lau for some time

by Marco Ballini

Hello everybody, I'd like to suspend e-mail from LAU for 2 weeks. Is there an alternative way to unsubscribe/subscribe? Thanks, Marco

21 years, 7 months

[linux-audio-user] agnula domain expired ?

by Olivier

When getting on Agnula's web site, it says it is expired. Is it only me ?

21 years, 7 months

[linux-audio-user] beeps are going to break my ears

by george bush

hi how are you experts getting along with beep ? i recently installed slackware8.0 to a tiny pentium110MHz machine (AMiTY-CN) and got OSS working so was going to play around with JSyn,Sfront and PortAudio (SuperC is too much something to run on this machine..right?) anyway the annoying thing is that the accidental beep sound is too loud comparing to the music thing expected to come out is there a way to simply get rid of beep or make the volume of beep (only) smaller thanks BUYO-BUYO-IGOR --- my mp3 is @ http://thismusic.ispopular.com __________________________________ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/

21 years, 7 months

[linux-audio-user] ANN: RTMix 0.76 released

by Ivica Bukvic

Greetings all! It's my pleasure to announce immediate availability of RTMix version 0.76. RTMix is an interactive multimedia art performance, composition, and coaching interface capable of triggering various DSP applications and/or processes concurrently, as well as offering a tight coordination between computer(s) and live performers. It can also trigger real-time events utilizing MIDI and OSC protocols, and can be in theory networked from a single client with up to 1000 other RTMix clients (personally neither have I had the opportunity to try this and besides the network latency would probably get the best of it anyways). For more info on what it is, what it does, and how it does it, please see the online docs: http://meowing.ccm.uc.edu/~ico/RTMix-doc/ Changelog: *RTMix is now part of the AGNULA project! *In order to comply with the AGNULA inclusion requirements, the install is now completely modular. Please use ./configure --prefix=<preferred-path> to install all the data files to the custom location. Binary is stored in /<preferred-path>/bin directory, so in the case your path happens to be "exotic," please make sure to use --bindir=<path-to-bin-directory> for custom binary directory placement. RTMix has so far been featured at ICMC 2002 conference (Sweden), SEAMUS 2003 conference (US), in the "Organised Sound" magazine (December 2002), and has been used in several of my works whose recordings are available on my website. If you happened to use RTMix in your work, I would love to hear in what ways you got to utilize its features, as well as how can I make the application better. Thanks! As usual, the tarball is available for immediate download from: http://meowing.ccm.uc.edu/~ico/rtmix-latest.tar.gz (4.3MB) For more info, please visit my website, RTMix forums at http://meowing.ccm.uc.edu/cgi-bin/ico/yabb/YaBB.cgi?board=Rtmix_id, and/or the online documentation (provided above). Best wishes, Ivica Ico Bukvic, composer & multimedia sculptor http://meowing.ccm.uc.edu/~ico

21 years, 7 months

[linux-audio-user] Problem with qarecord and qjackctl

by Eduardo Guerrero

I'm trying to capture what I play with ZynAddSubFX and Hydrogen in a wav file. What I have done so far is start qjackctl for having jack running, then ZynAddSubFX and Hydrogen with the proper connection so everything sounds fine. Then I start qarecord but if I check the capture checkbox nothing appears on the level meters, but if I don't start jack I can see the meters moving and capture the sound coming from xmms in a wav file that plays fine. Is it that qarecord only works without jack? I think it should but I can't make it to appear in the connections window in qjackctl as I have seen in some tutorials, it shows in the MIDI section though as a writable client / input port. I'm pretty sure that's not what I need. I'm using qjackctl v. 0.2.0 and qarecord v. 0.0.8. All of them installed from THAC's RPM site for Mandrake 9.2. Any help would be greatly appreciated. Eduardo.

21 years, 7 months

[linux-audio-user] Re: Low Latency patches and kernel 2.6.x

by Florian Schmidt

On Mon, 22 Dec 2003 11:58:54 -0800 Andrew Morton <akpm(a)osdl.org> wrote: Ok, it seems that the list only takes mails from subscribers. sorry for that.. This mail will let the others see your answer. Thanks for taking the time. I will do some testing with 2.6. I will report back to you how it goes [after the holidays]. Have a nice xmas :) > Florian Schmidt <mista.tapas(a)gmx.net> wrote: > > > > > > Hi Andrew, > > > > i'm a user of a 2.4.22 kernel patched with the preemption patches > > plus your Low Latency patches. It works very nicely for audio > > applications[like jackd, ardour, etc...]. > > Cool. > > > Looking into the config menu of the 2.6.0 kernel i only find a > > "preemptible kernel" config option. Your low latency patches seem > > not to be included. Do you have plans of including your patches in > > the 2.6.x kernel? I heard rumors about merging the preemptible and > > your LL patches since they seem to go very nicely together.. Any > > truth to that? > > The objective in 2.6 is that the preemptible kernel achieve similar > worst-case latencies to the low-latency-patched kernel. So 2.6 should > meet your requirements out of the box. > > > That being said, last time I instrumented the 2.6 kernel it was not > achieving the targets. The specific failure was occurring when the > machine had a very large number of inodes in cache and the VM system > was reclaiming those inodes. > > It is unlikely that you will strike this problem in real-world usage, > so 2.6 should work fine for you. As ever, testing results would be > appreciated. > > (The inode reclaim problem is fairly complex, but I just happen to see > a patch from Dipankar Sarma in my inbox this morning which is designed > to fix it up). > -- music: http://www.soundclick.com/bands/9/florianschmidt.htm

21 years, 7 months

[linux-audio-user] Fw: Re: Low Latency patches and kernel 2.6.x

by Florian Schmidt

Oops i messed up the quoting a little bit. Here's Morton's answer: Begin forwarded message: Date: Mon, 22 Dec 2003 11:58:54 -0800 From: Andrew Morton <akpm(a)osdl.org> To: Florian Schmidt <mista.tapas(a)gmx.net> Cc: linux-audio-dev(a)music.columbia.edu, linux-audio-user(a)music.columbia.edu Subject: Re: Low Latency patches and kernel 2.6.x Florian Schmidt <mista.tapas(a)gmx.net> wrote: > > > Hi Andrew, > > i'm a user of a 2.4.22 kernel patched with the preemption patches plus > your Low Latency patches. It works very nicely for audio applications > [like jackd, ardour, etc...]. Cool. > Looking into the config menu of the 2.6.0 kernel i only find a > "preemptible kernel" config option. Your low latency patches seem not > to be included. Do you have plans of including your patches in the > 2.6.x kernel? I heard rumors about merging the preemptible and your LL > patches since they seem to go very nicely together.. Any truth to > that? The objective in 2.6 is that the preemptible kernel achieve similar worst-case latencies to the low-latency-patched kernel. So 2.6 should meet your requirements out of the box. That being said, last time I instrumented the 2.6 kernel it was not achieving the targets. The specific failure was occurring when the machine had a very large number of inodes in cache and the VM system was reclaiming those inodes. It is unlikely that you will strike this problem in real-world usage, so 2.6 should work fine for you. As ever, testing results would be appreciated. (The inode reclaim problem is fairly complex, but I just happen to see a patch from Dipankar Sarma in my inbox this morning which is designed to fix it up). End forwarded message -- music: http://www.soundclick.com/bands/9/florianschmidt.htm

21 years, 7 months

[linux-audio-user] ALSA article in c't

by Frank Barknecht

Hallo, just a short advertisment: the german magazine c't - Europe's most subscribed computer mag after all - has published an article on getting started with Linux sound using ALSA written by me. Unfourtunatly it's not available online, but then, it's in German anyways. c't 26/2003 will be in stores on Monday. Many here probably already have it in their mailbox. Skip forward to page 200. ;) ciao -- Frank Barknecht _ ______footils.org__

21 years, 7 months

[linux-audio-user] rme9632 status?

by WR

Spent the last few hours reading threads about hdsp firmware and issues, and I'm wondering where things are currently at (development seems to happen pretty rapidly around here!)...just installed a 9632 rev3, with alsa-driver 1.0.0-rc2, and have some way to go, I reckon... lspci shows: 00:09.0 Multimedia audio controller: Xilinx Corporation RME Digi9652 (Hammerfall) (rev 03) dmesg: RME Hammerfall-DSP: no cards found # uname -a Linux 2.4.22-ck2 #1 SMP Sun Dec 21 00:23:34 PST 2003 i686 AMD Athlon(tm) MP Processor 1900+ AuthenticAMD GNU/Linux What are the currently recommended kernel/alsa/firmware/eprom versions? alsa-project.org appears to recommend using the hdsp driver instead of rme9652 on the 9632 -- is there any reason to use one or the other? Or am I reading it wrong... Thanks for any advice!! WR

21 years, 7 months

[linux-audio-user] some notes regarding sync (JACK, MTC) under Linux

by Dave Phillips

Greetings: I followed the recent thread here regarding this issue but I was too busy to contribute. Here are a few observations resulting from my own tests : Hydrogen works very nicely under JACK. However, when Song mode is set to Loop the JACK transport works only on the first play through, i.e., Hydrogen doesn't loop. Pattern mode looping is fine, but not Song mode looping. Also, I'm losing the first beat when the transport starts. Anyone else noticing that ? Ecasound also works nicely with JACK but I haven't tested all the transport functions yet. I just realized that ecasound should be able to rewind to start under JACK. Kai, am I right about that ? Where can I find a summary of ecasound's current JACK capability ? MusE and Rosegarden don't yet work with the JACK transport, but that's not news. However, I did sync MusE to external MTC and it worked very nicely. I thought I had been able to do the same thing internally with the ALSA virmidi module, but upon sober reflection it appears I was smoking bad crack. Am I correct in assuming it's not possible to send MTC over the virtual MIDI connection ? Again not news: Ardour works nicely as a JACK master but it doesn't seem to like being a slave (but who does ?). Also, am I correct to note that Ardour doesn't respond to incoming MTC or MMC ? I'll have to check that again... The latest Hydrogen release notes state that MMC/MTC are experimentally supported, but I don't see any switches for those controls. Has anyone else tried utilizing MMC or MTC with the new Hydrogen ? Qjackctl is very sweet (Thanks Rui!), but a rewind transport control might be nice to see on it. Finally, a non-sync issue (?) that I think has been reported before. Sometimes the sound gets distorted while running an app under JACK (not necessarily under the transport control). It cleans itself up after a little time, but it's a Very Bad Thing to be happening. Instruments with lower frequencies seem to trigger the distortion (bass drum, low toms, etc. in Hydrogen). Has anyone else noticed and fixed this problem ? In a similar vein, I tried recording Hydrogen to two channels in Ardour, running Hydrogen as slave, Ardour as master. The first play-through of the Song in Hydrogen records fine in Ardour, but then I get a terrible distortion. I can supply a soundfile and screenshot that clearly sounds/shows what's happening. Perhaps it's related to the first problem above ? System here is as follows: 800 MHz Duron w. 512 MB RAM current PlanetCCRMA RH9 w. low-latency kernel ALSA 1.0.0rc2 SBLive Value Kudos to all the developers working on fastening their apps to the JACK transport model. As joq stated this is one of the most impressive aspects of the whole JACK schema, at least for the normal user. Best regards, == dp

21 years, 7 months

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Linux-audio-user