Linux-audio-user May 2007

linux-audio-user@lists.linuxaudio.org

159 participants
168 discussions

by Ken Restivo

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I've noticed the same strange behaviour in two completely different peices of software/hardware, and have to wonder if it's a integer-size issue. First of all, the AZR3 LV2 softsynth clips on my 64-bit machine. Really bad. Lars looked at it, and gave me the action item to go digging through the source and test the sound at various points in the processing chain, to try to isolate it further. Which I am still going to do. Then, I noticed the exact same problem with the *inputs* on my M-Audio Audiophile USB interface (it is big-endian). This is a new problem too, and I don't know what could have changed to cause it. The noise floor on the line inputs went way up into the -30db range, and even the lowest, faintest mic-level input will cause it to clip! There is no ALSA mixer interface on this unit so I don't know of any way to lower the levels. But seems very similar to the problem with AZR3 on the same 64-bit machine. Integer overflow? Byte order? In other words, are lower-order bytes getting swapped around with higher-order bytes, and thus sending the signal level through the roof? Coincidence or superstition? Anyone else had these kinds of problems? - -ken -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQFGWIm8e8HF+6xeOIcRAhNcAKCcIBwXTebyclAd6Cd77nfhatjoLACdEevb egN20braEXLBxNuwGbNNHoU= =Lqh3 -----END PGP SIGNATURE-----

18 years, 1 month

How do I control the 'end' marker in Ardour?

by dfro＠umich.edu

I am having trouble finding and controlling where an audio file ends during export. I will go to export a small one second sample, for example, and the cursor keeps going on and on making a large file where there is no sound. I click on the keyboard 'goto end' key and it sends me to a measure hundreds of measures away from the beginning. Why? Can someone help me understand how to control where the end of a sound file is. How do I invoke the 'end' marker or change its location? Thanks.

18 years, 1 month

RT vs MM

by David Baron

What are the features, strengths, limitations of the various patched kernels: The (Ingo) -rt kernels, now packaged by Musix, and the -mm kernels, available on kernel.org and used in Dynebolic?

18 years, 1 month

Cannibal's Trance : new music from StudioDave

by Dave Phillips

Greetings: I've put a new piece on-line, another one just for fun: http://linux-sound.org/cannibalstrance.ogg Software used included: JOST host for native VST plugins mdaJX10 (synth, 2 instances) mdaDX10 (synth, 2 instances) Eqinox (EQ, 2 instances) QSynth (drums, bass, square lead) JACK-Rack (CAPS Plate Reverb again, wet) Sequencer Plus Gold under DOSemu QJackCtl midirgui ecasound The piece was produced on my 800 MHz box (no VST on 64-bit box) running the JAD distro (openSUSE 10.2). I worked on the song almost all day yesterday, had 0 xruns, no crashes, everything ran beautifully. Vast thanks to all the developers who made it possible ! :) Btw, this is a preliminary non-mix. I plan to record it as a multi-channel WAV with ecasound, then I'll work with each track/instrument in more detail in Ardour on the big iron. Comments welcome, as always. And yes, this sucker is tagged. ;) Dance, dance, dance... Best, dp

18 years, 1 month

Re: [LAA] [ANN] Alsaplayer 0.99.79 and fftscope 1.0.4 released

by Dragan Noveski

Dominique Michel wrote: > Le Sat, 26 May 2007 15:16:31 +0200, > Dragan Noveski <perodog(a)gmx.net> a écrit : > > >> Dominique Michel wrote: >> >>> Le Thu, 24 May 2007 12:37:43 +0200, >>> Dragan Noveski <perodog(a)gmx.net> a écrit : >>> >>> >>> >>>> Dominique Michel wrote: >>>> >>>> >>>>> Alsaplayer 0.99.79 >>>>> ------------------ >>>>> AlsaPlayer is a new type of PCM player. It is heavily multi-threaded and >>>>> tries to excercise the ALSA library and driver quite a bit. It has some >>>>> very interesting features unique to Linux/Unix players. >>>>> This is a feature enhancement and minor bugfix release. >>>>> >>>>> New features: >>>>> Basic keyboard navigation and loop inside a selection have been added. >>>>> >>>>> Bugfix: >>>>> A missing include was added; this make at Alsaplayer will compile on never >>>>> gcc and non gcc compilers. >>>>> >>>>> ChangeLog from the last release: >>>>> >>>>> * Updated config.guess and config.sub with latest savannah version. >>>>> * Added missing include in app/CorePlayer so it will compile with never >>>>> gcc and non gcc compilers. Thanks to Debian for this fix. >>>>> * Applied Debian patch from Viktor Radnai and Paul Brossier. Add basic >>>>> keyboard navigation (skip, pause, etc.), loop mode (looping inside a >>>>> selection), pressing play button or key during playback return to the >>>>> beginning of the song, speed changes one musical semitone a time using >>>>> the keyboard (handy for changing the key the song is played back in). >>>>> * Added keyboard shortcuts for speed +/- 1 comma (useful to tune the >>>>> player when playing some musical instrument at the same time). >>>>> * Updated the man page with those keyboard bindings. >>>>> >>>>> >>>>> fftscope 1.0.4 >>>>> -------------- >>>>> Fftscope is a nice fft scope plugin for Alsaplayer. >>>>> >>>>> This release is a major bugfix release and each user is encouraged to >>>>> upgrade. >>>>> Alsaplayer was crashing at exit time when this scope was installed but not >>>>> running. A missing test in the quit function was added. >>>>> The compilation flags in Makefile.am was fixed. >>>>> >>>>> Enjoy those 2 new releases! >>>>> --------------------------- >>>>> >>>>> http://www.alsaplayer.org/ >>>>> http://sourceforge.net/project/showfiles.php?group_id=249 >>>>> >>>>> Dominique >>>>> >>>>> >>>>> >>>>> >>>> great - congratulation for the new release!!! >>>> alsaplayer was not updated for long, but in the last few months this is >>>> the second update! >>>> >>>> cheers, >>>> doc >>>> >>>> >>> Thank you, >>> >>> The upcoming release will be a milestone: full working gtk2 interface. You >>> can already find it in the svn at sourceforge. >>> >>> Cheers, >>> Dominique >>> >>> >>> >> unfortunately, if i do 'svn co https:...' the terminal says that 'ssl is >> not supported', and i don't know how to switch this feature on - have >> the same troubles in aqualung. >> >> could you provide an svn-tarbal? >> >> > > You can download it from http://www.alsaplayer.org/svn.php3 > > >> cheers, >> doc >> > > > hey dominique, this really looks good! but look, i have a kind of feature request here: i start alsaplayer with: /usr/local/bin/alsaplayer -i gtk2 -r -o jack and as soon alsaplayer appears in the screen, it begins to play the queue-files. this is for me mostly not useful, cause not often, starting alsaplayer i want to listen to that, what i listened yesterday. also, i think it could sometimes be dangerous, if alsaplayer begins to play himself, i would like to be able to make the decision about when alsaplayer starts to play by myself. what do you think about that? cheers, doc

18 years, 1 month

Noise update, still the case with the other interface

by Ken Restivo

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 The M-Audio Audiophile interface produced just as much noise as the Edirol FA-66 did. However, the amp I borrowed was buzzing even with only a regular (Korg) keyboard plugged in, so the problem may have to do with the amp. I also noticed that this laptop's analog video output produces some nasty warbling/ghosting on my external monitor. Looks like rain falling or fog travelling rapidly, especially with dark screen backgrounds. Dunno if that's an improper X setting, a problem with the monitor, or or maybe this laptop is just generating way too much EMI with the Core 2 Duo's 2.33Ghz clock? I hope that's not the problem-- that is one of the few things I cannot change. I've going to buy a keyboard amp, to isolate that variable at least. Off-topic, perhaps, but any recommendations? Most keyboard players I've seen recently seem to have Roland wedge-style keyboard amps. My local store carries the Peavey's (KB4, etc). Thanks Pieter and others for links about noise mitigation. I'll try those suggestions too once I get the amp situation squared away. - -ken -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQFGUeCme8HF+6xeOIcRAmdDAKDHjJqrlfgieWcJYCpIIPBpgC0AUQCglMtD cDVickB84OZm5Yg2/ySLVLI= =32B1 -----END PGP SIGNATURE-----

18 years, 1 month

new music..

by James Stone

Hi everyone, Just finished my first piece of music for ages. It was written using seq24, 3 whysynth instances and 1 fluidsynth-dssi (with that Machinae Supremacy drumkit loaded) hosted by ghostess.. A few stability problems but all in all a pleasure to work with.. (will be better with lash support!). No mixing, and I have kept the drums purposely unquantised, but I think that my terrible timing might be a bit offputting. Would appreciate feedback and suggestions for improvement. http://www.archive.org/details/SunsetOverseas James

18 years, 1 month

PHASEX-0.10.2

by William Weston

The [P]hase [H]armonic [A]dvanced [S]ynthesis [EX]periment, version 0.10.2 is ready for download (source tarball and FC6 RPMs) at: http://sysex.net/phasex/ This release contains many fixes, most notably better support for older GTK versions. PHASEX now works with GTK2 versions as low as 2.4.x, which should help most of the build issues on older distros. Here's everything from the Changelog for this release: * Fixed typos and omissions in parameter help file. * Improved error handling and reporting in jack.c. * Fixed JACK thread shutdown. * Added Pete Shorthose's patch for saving memory with a single knob anim. * Added Lars Luthman's patch for improper style handling in gtkknob.c. * Fixed knob centering on middle click drag events. * Cleaned up style and whitespace in gtkknob.c, added boilerplate. * Added current midimap file to saved settings. * Fixed build and runtime problems with GTK versions 2.4 to 2.8 * Fixed invalid setting of patch modified flag on startup. * Updated error message for unhandled ALSA MIDI errors. * Fixed passing of debug flags in configure.ac. * Fixed detection of functions in libm. * Added install of phasex.desktop to Makefile.am. * Fixed uninitiailized varibable warnings in midi.c. * Fixed missed internal update on boolean parameters first switching to zero. * Removed dead update_widget_val() in callback.c. * Disabled engine side of audio ringbuffer locking (easier on JACK). * Changed name of ALSA MIDI sequencer input port for readability. * Added project roadmap. Special thanks go to Pete Shorthose and Lars Luthman for your patches to the gtkknob code, and to the rest of you for offering incredible feedback, especially on the build issues and ALSA/JACK startup issues. Cheers! --ww -- /* William Weston <weston(a)sysex.net> */

18 years, 1 month

Re: [LAA] [ANN] Alsaplayer 0.99.79 and fftscope 1.0.4 released

by Dragan Noveski

Dominique Michel wrote: > Le Thu, 24 May 2007 12:37:43 +0200, > Dragan Noveski <perodog(a)gmx.net> a écrit : > > >> Dominique Michel wrote: >> >>> Alsaplayer 0.99.79 >>> ------------------ >>> AlsaPlayer is a new type of PCM player. It is heavily multi-threaded and >>> tries to excercise the ALSA library and driver quite a bit. It has some very >>> interesting features unique to Linux/Unix players. >>> This is a feature enhancement and minor bugfix release. >>> >>> New features: >>> Basic keyboard navigation and loop inside a selection have been added. >>> >>> Bugfix: >>> A missing include was added; this make at Alsaplayer will compile on never >>> gcc and non gcc compilers. >>> >>> ChangeLog from the last release: >>> >>> * Updated config.guess and config.sub with latest savannah version. >>> * Added missing include in app/CorePlayer so it will compile with never gcc >>> and non gcc compilers. Thanks to Debian for this fix. >>> * Applied Debian patch from Viktor Radnai and Paul Brossier. Add basic >>> keyboard navigation (skip, pause, etc.), loop mode (looping inside a >>> selection), pressing play button or key during playback return to the >>> beginning of the song, speed changes one musical semitone a time using >>> the keyboard (handy for changing the key the song is played back in). >>> * Added keyboard shortcuts for speed +/- 1 comma (useful to tune the player >>> when playing some musical instrument at the same time). >>> * Updated the man page with those keyboard bindings. >>> >>> >>> fftscope 1.0.4 >>> -------------- >>> Fftscope is a nice fft scope plugin for Alsaplayer. >>> >>> This release is a major bugfix release and each user is encouraged to >>> upgrade. >>> Alsaplayer was crashing at exit time when this scope was installed but not >>> running. A missing test in the quit function was added. >>> The compilation flags in Makefile.am was fixed. >>> >>> Enjoy those 2 new releases! >>> --------------------------- >>> >>> http://www.alsaplayer.org/ >>> http://sourceforge.net/project/showfiles.php?group_id=249 >>> >>> Dominique >>> >>> >>> >> great - congratulation for the new release!!! >> alsaplayer was not updated for long, but in the last few months this is >> the second update! >> >> cheers, >> doc >> > > Thank you, > > The upcoming release will be a milestone: full working gtk2 interface. You can > already find it in the svn at sourceforge. > > Cheers, > Dominique > > unfortunately, if i do 'svn co https:...' the terminal says that 'ssl is not supported', and i don't know how to switch this feature on - have the same troubles in aqualung. could you provide an svn-tarbal? cheers, doc

18 years, 1 month

lmms ?

by lanas

Folks, Any opinions on lmms ? I haven't installed it yet, am only thinking about it. As with most, I come from a Windows background where monolithic apps rules. But then, I've been working with Linux for several years now and one thing that's omnipresent - so far - in the Linux Way is modularity. Be it in chaining small apps to get results (eg. cat bigFile | grep error) to having a clear concern separation between functionality and user interface. And this is what I like with the actual state of most of the Linux audio apps. Soemone makes a new synth ? Fine, we just use it through jack. No encompassing large apps that tries, with various degrees of flexibility, to do it all. Well, there must be some out there. Maybe jokosher. And maybe lmms. What I'd like to know, is that, from a 'techie' point of view that feels that it's allright to use many X screens to have many apps running at the same time, what is lmms bringing ? Is it only but a Windows-inspired application ? Cheers, Al

18 years, 1 month

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Linux-audio-user May 2007