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20661 discussions

[linux-audio-user] Linux/ALSA/Jack latency tests

by Daniel James

Hello, In the course of researching another Linux article for Sound on Sound, I was having a discussion with the features editor about latency, specifically Linux versus Windows and Mac. The only cross-platform serious study I'm aware of is this one, which is a bit out of date: http://gigue.peabody.jhu.edu/~mdboom/latency-icmc2001.pdf Now the features editor looked it up for himself and found this page, also out of date I think: http://www.rme-audio.com/english/linux/alsa.htm It quotes a latency under Linux for the Hammerfall of 20ms, where as Windows can do 6ms with this card if you install the ASIO drivers. I think he's now sceptical that Linux can compete with Windows/ASIO in the area of low latency. Can any RME (or other pro card) users on the list quote reliable latency figures for their own systems? It would be very helpful. My personal experience is that you can get negligible latency on Audacity overdubs with Mandrake and the 'multimedia' kernel, compared to obvious latency on Windows 98. But I haven't set up any scientific tests with matching hardware. Cheers Daniel

22 years, 2 months

[linux-audio-user] Updated packages... At last!

by Luke Yelavich

Hi all The long awaited package updates are now available at http://www.audioslack.com. You can read the full announcement on the front page, including what has been updated and what is new. Please contact me with any feedback or bug reports. Thanks Luke ---------------- Luke Yelavich AudioSlack Founder and main package maintainer Audio software packaged for the Slackware Linux Distribution http://www.audioslack.com luke(a)audioslack.com

22 years, 2 months

[linux-audio-user] USB Soundcard Recomendations

by Robert Brown

Hi, I am interested in using a USB soundcard for my laptop (gentoo!) so that I can record a standard analog stereo line signal (red & white rca connectors would do) I don't need line outs or digital, although they could possibly come in handy some day as well ;) Any suggestions are appreciated, thanks! Robert Brown

22 years, 2 months

RE: [linux-audio-user] how to invest sensible to get more stability for JACK

by Reuben Martin

If you haven't done it yet, using a ram drive for jack's temp dir helps take some of the load of your hard drive. Things like asio mode and hardware monitoring/metering (when supported) also help. http://jackit.sourceforge.net/docs/faq.php -Reuben -----Original Message----- From: Hartmut Z Noack [mailto:symposion@onlinehome.de] Sent: Thu 8/21/2003 7:48 PM To: linux-audio-user(a)music.columbia.edu Cc: Subject: [linux-audio-user] how to invest sensible to get more stability for JACK Hello, i am working quite intense on lerning ARDOUR by doing. Using its beta i exrerience some bugs that are more or less tolerablein such great an App for no cost (crashes when trying some adventurous routing-stuff, some lesser gui-issues). After all there are only 2 really serious problems: 1.)Importing .wav-files fails too often (regardless if these files are written by Samplitude, Audacity, rezound or even Ardour itself) How is that on your setups out there? 2.)Many xruns, (some after 2 seconds, others after 2 mins, mostly within 40 secs or so - sometimes i had testrecordings of unbroken 10 minutes) I use Ardour on SuSE 8.2 pro with jack0.74 as root only on runlevel 3 in Windowmaker, all networking is off, no kdeinit is running. System is: Athlon XP 1800, 512MB DDR, 60GB Samsung HD/IDE, Terratec EWX 24/96 I think about wether i buy another IDE-HD and spread the installation on 2 disks to get more bandwith or getting another 512 RAM to let Jack run without HD or investing in a SCSI-HD for installation and Projects and using the IDE-Disk for Archiving only. What would you prefer, how are your Experiences about this Bandwithissues? Thank you

22 years, 2 months

[linux-audio-user] Good organ sound needed

by Luke Yelavich

Hi all I am wondering if anybody can recommend software that is capable of producing a high quality organ sound, preferably like that of a Hammond B3. It doesn't have to have heaps of controls, but something that I can modify on the fly to make texture changes in the sound. Support for LADSPA/JACK/Pure-Data/MIDI is preferable. Alternatively, does anybody know of any good quality soundfonts and/or samples that would fulfill this task? Thanks Luke ---------------- Luke Yelavich AudioSlack Founder and main package maintainer Audio software packaged for the Slackware Linux Distribution http://www.audioslack.com luke(a)audioslack.com

22 years, 2 months

[linux-audio-user] ecamegapedal 0.4.3 released

by Kai Vehmanen

1. A short summary of changes Bugs in build process were fixed. Support for transport functionality in JACK 0.77.0 and newer has been added. Transport functions are enabeld only if Ecamegapedal is compiled against Ecasound newer than 2.2.3. Ecamegapedal was verified to work if compiled against Qt-3.2. --- 2. What is Ecamegapedal? Ecamegapedal is a real-time effect processor software with a graphical user interface for controlling the effect parameters. It is meant to be used as a virtual guitar-fx or studio effect box. In addition to real-time operation, ecamegapedal also supports reading from and writing to audio files. All audio object and effect plugin types provided by the ecasound libraries are supported. This includes ALSA, JACK, OSS, aRts, over 20 file formats, over 30 effect types, LADSPA plugins and multi-operator effect presets. Ecamegapedal's implementation is based on ecasound and Qt libraries. Ecamegapedal is licensed under the GPL. --- 3. Contributors Patches Junichi Uekawa (1) -- Qt -rpath build optimization Kai Vehmanen (1) -- JACK transport support --- 4. Links and files http://www.eca.cx/ecamegapedal http://ecasound.seul.org/download/ecamegapedal-0.4.3.tar.gz -- http://www.eca.cx Audio software for Linux!

22 years, 2 months

[linux-audio-user] 2.6 Kernel(s) and RME Hammerfall

by Peter Groves

Hi, I downloaded the latest beta release of the linux kernel last night (2.6.0-test3) but couldn't get it to compile. I looked up the error (just using google) and I found a similar compiling problem related to the RME Hammerfall driver that was identified (and fixed) in the 2.5 kernel series (something like the 2.5.5 kernel). It referred to a patch, but I would think it would only work for the particular version it was designed for. I am trying to include the Hammerfall driver in my build, which makes me think it may be the same problem. Has anyone been able to compile any recent kernels w/ the Hammerfall driver? In the likely event that no one has tried this yet, can you tell me if it would it be better to contact the ALSA mailing list or the linux kernel mailing list to ask for help? Peter

22 years, 2 months

RE: [linux-audio-user] New To List

by eviltwin69＠cableone.net

Chris, In addition to Ardour and Rosegarden you need to check out JAMin. It's not really finished until it's mastered. http://sourceforge.net/projects/jamin. Jan -----Original Message----- From: "linux-audio-user-admin(a)music.columbia.edu" <linux-audio-user-admin(a)music.columbia.edu> on behalf of "Chris Share" <cpsmusic(a)labyrinth.net.au> Sent: Wed, 20 Aug 2003 13:20:05 +1000 To: "linux-audio-user(a)music.columbia.edu" <linux-audio-user(a)music.columbia.edu> Subject: [linux-audio-user] New To List Hi, After reading an article about Linux and music in Sound On Sound recently, I thought I'd take the plunge and begin moving my music studio to Linux. Currently I'm using an Athlon XP-based PC and a PowerMac 7600/200. The PC contains a Hoontech DSP24 Value card and an MPU-401 style MIDI interface that I put together myself. The Mac contains a Yamaha SW1000 card and an Opcode MIDI interface. My main music software is Cubase, although I've used tons of other music software over the years. The main programs I'm interested using are Rosegarden and Ardour, although I'm also interested in looking at some of the softsynth stuff too. I work as a technical writer and have written some music software for Mac and PC (CS1 Background Edit) so I'm fairly computer literate. However, I have no experience with Linux. Initially, I installed Debian on my PC, however it didn't get along with my TFT monitor. I've since bought Red Hat 9.0. Which I'm just about to install. Hopefully it will be a bit easier to use! Before I begin the installation I was wondering if someone could fill me in on the current state of ALSA. I've had a quick look at some of the How-Tos however I'm not clear on how up-to-date they are. I'm currently looking at getting a new soundcard--the Hoontech was really only a temporary measure to get sound out of the PC. Unfortunately, it seems that the SW1000 won't ever be supported so it's not much use. I'd like a card with balanced 24-bit analog I/O and SPDIF I/O. The MiaMIDI card seems to have these features. Does anyone have experience with this card on a Linux system? I also thought that a Delta66 would be suitable too. Cheers, Chris Share

22 years, 2 months

[linux-audio-user] FreqTweak 0.5.2 released

by Jesse Chappell

Version 0.5.2 of FreqTweak has been released. This is a feature (and bugfix) update: * added Compressor module * added EQ Boost module * now supports FFTW3 * fixed dialog closing problem, made them real windows * fixed compile problems for gcc 2.96 * manpage contributed by Enrique Arnuncio http://freqtweak.sourceforge.net ======================================================================= FreqTweak is a tool for realtime audio spectral manipulation and display. It provides several algorithms for processing audio data in the frequency domain and a highly interactive GUI to manipulate the associated filters for each. It also provides high-resolution spectral displays in the form of scrolling-raster spectrograms and energy vs frequency plots displaying both pre- and post-processed spectra. ======================================================================= If anyone has any cool ideas for new tweak modules, please subscribe and post them to freqtweak-user(a)lists.sourceforge.net. Jesse Chappell

22 years, 2 months

[linux-audio-user] Two sound cards, only sound out of one

by Erik de Castro Lopo

Hi all, I asked this question on the alsa-user list but haven't received a reply so I thought I would ask here. I have two ENS1371 based cards plugged into the one machine: root@sound:~# cat /proc/asound/cards 0 [AudioPCI ]: ENS1371 - Ensoniq AudioPCI Ensoniq AudioPCI ENS1371 at 0xa400, irq 10 1 [AudioPCI_1 ]: ENS1371 - Ensoniq AudioPCI Ensoniq AudioPCI ENS1371 at 0x9400, irq 5 I have also set up a /etc/asound.conf file containing aliases for the cards named "card0" and "card1". I have also run alsamixergui with "-c 0" and "-c 1" parameters to set up output volumes on the two cards (and the controls on the two alsamixergui instances behave independantly). However, when I playback a sound file using: aplay -D card0 a.wav aplay -D card1 a.wav Only card0 produces sound. I have also tried physically swapping the cards but only card0 produces sound. I have also tried the -v option to aplay to confirm that the output is going to device 0 and device 1. I'm out of ideas about this. Does anybody have any hints on how I might get this going? Thanks, Erik -- +-----------------------------------------------------------+ Erik de Castro Lopo nospam(a)mega-nerd.com (Yes it's valid) +-----------------------------------------------------------+ Linux: Because rebooting is for adding new hardware

22 years, 2 months

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