Linux-audio-user June 2009

linux-audio-user@lists.linuxaudio.org

140 participants
111 discussions

by Nedko Arnaudov

In this release: * slv2 is no longer required * cache list of suitable plugins * speedup plugin list window * new tool, zynspect, that can be used to list and inspect available lv2 plguins. * Fix assert when restoring rack presets * By default, sort plugins by name * Experimental support for dynmanifest extension. Combined with NASPRO allows loading ladspa plugins in lv2rack. * Set plugin GUI window's role to "plugin_ui" (for WM kludges etc) * single plugin mode for lv2rack * Hide external UIs when zynjacku/lv2rack quits zynjacku is JACK based, GTK (2.x) host for LV2 synths. It has one JACK MIDI input port (routed to all hosted synths) and one (two for stereo synths) JACK audio output port per plugin. Such design provides multi-timbral sound by running several synth plugins. zynjacku is a nunchaku weapon for JACK audio synthesis. You have solid parts for synthesis itself and you have flexible part that allows synthesis to suit your needs. lv2rack is a host for LV2 effect plugins. Project homepage with screenshots: http://home.gna.org/zynjacku/ Get tarball from here: https://gna.org/files/?group=zynjacku -- Nedko Arnaudov <GnuPG KeyID: DE1716B0>

15 years, 6 months

what's up with midi clock

by Atte André Jensen

Hi Long story short: I'm writing a osc2midi_clock script in chuck for controlling sooperlooper from incomming osc messages. I have no experience with midi clock so I had to play around with it. The following seems to work (T for time messges (0xf8), S for start (0xfa), x23 means "repeat 23 times"): S Tx23 S Tx23 S etc. It even works to the point that I can throw in clients at any time, since the start messages resets the clock every quarter note. The two clients I checked with are sooperlooper and renoise. *However* the specifications I looked at are: http://www.harmony-central.com/MIDI/Doc/table4.html http://www.blitter.com/~russtopia/MIDI/~jglatt/tech/midispec/seq.htm They both suggests that it should actually be S Tx24 S Tx24 S etc, with little or no time between S and the following T. However here the clients (again sooperlooper and renoise) doesn't show the test tempo 112 but somewhere between 116 and 117. Anyone has any idea what the right way? Also; I've been discussing this with Jesse Chappell (author of sooperlooper) and he says that he looked at his code and thinks there's a bug (which makes it work correctly with my wrong midi clock, since that's actually written targetting sooperlooper). Now it would be very interresting to look at other clients and masters of midi clock, however not having worked with midi clock before, what would be the first clients to cross check with? -- Atte http://atte.dk http://modlys.dk http://virb.com/atte

15 years, 6 months

[ANN] a2jmidid version 5 "Athos" released

by Nedko Arnaudov

a2jmidid is a project that aims to ease usage of legacy ALSA sequencer applications, in a JACK MIDI enabled system. a2jmidid implementation is based on jack-alsamidi-0.5 that is [almost] same as jackd ALSA "seq" MIDI backend, both created by Dmitry Baikov. Static bridges are based on code by Sean Bolton and Lars Luthman. Homepage with screenshots: http://home.gna.org/a2jmidid/ Tarball download: http://download.gna.org/a2jmidid/ Changes since version 4: * Fix thight loop on D-Bus disconnect * D-Bus signals for bridge start and stop * Fixed alsamidi "disappearing output" bug. (backport from jack1) * MIDI note-off normalization fix from Dave Robillard (Backport from jack1) * Removed wrong assert from alsa_seqmidi.c reported by Ken Ellinwood (Backport from jack1) * Mark anything that looks like a hardware port as physical&terminal (Backport from jack1/jack2) * Fix potential crash when D-Bus is not used * Support for multiple ALSA clients with same name * Merge midibridge changeset by Paul Davis that is expected to fix midi event timing problems that some people have reported. -- Nedko Arnaudov <GnuPG KeyID: DE1716B0>

15 years, 6 months

Re: [LAU] Me too, a new "song"

by Joan Quintana

Very nice all this stuff... before suggesting to make a database with all this works, google searching I found http://lam.fugal.net/ (maybe most of you already know this link). So you can index there your works. Joan Quintana

15 years, 6 months

Re: [LAU] LibFreeBoB ERR: Dropped packets on connection 1

by sonofzev＠iinet.net.au

On Fri Jun 12 11:12 , Alex Norman sent: >I get this error often but without an specific indication of why: > >LibFreeBoB ERR: Dropped packets on connection 1 > >And then I get a glitch in my audio. > >I use ubuntu and I have libfreebob 1.0.11-0ubuntu1 > >I have my cpu clocked as fast as it can go and very little load on my system [I >don't have my web browser open, I'm only recording audio using mhwaveedit]. > >I'm wondering if anyone has any strategies I can take to get rid of this? It is >super annoying because I'm trying to record records into my computer and every >time this happens I have to start the song over. > >thanks, >Alex > Not a solution, but have you tried FFADO as it is the successor to Freebob... I find it more stable with my hardware.

15 years, 6 months

OSS tweaks

by Kim Cascone

http://insanecoding.blogspot.com/2009/05/perfect-sound-with-oss-version-4.h… thought this might be of interest to some

15 years, 6 months

update of FIL-plugins

by Fons Adriaensen

Hello all, The 4-band paramatric filter plugin has been updated: FIL-plugins-0.3.0.tar.bz2, available as usual on <http://www.kokkinizita.net/linuxaudio/downloads>. Changes: It's still the same filter, but may 'feel' different. The mapping from param values to actual responses has been modified, in particular the interaction of gain and bandwidth at extreme gain settings. People have asked for 'shelf' filters in addition to the parametrics. You can use the parametric filters to obtain shelf responses, for LF use the first section with F = 20 Hz, for HF the fourth section with F = 20 kHz. In both cases use the bandwidth control to shift the actual shelf frequency. Useful values for bandwidth in this case are those >= 1. Nedko Arnaudov is preparing an LV2 version that will also show the actual frequency response. Enjoy ! -- FA Io lo dico sempre: l'Italia è troppo stretta e lunga.

15 years, 6 months

Re: [LAU] LibFreeBoB ERR: Dropped packets on connection 1

by sonofzev＠iinet.net.au

That shouldn't be the case. I have recompiled and updated jack without needing to recompile other apps on numerous occasions. (I use an SVN version as that seems to work best with FFADO) The jack API is pretty stable I don't know much about ubuntu packages, but I'm pretty sure the current version of jack already supports FFADO. On Fri Jun 12 14:14 , Alex Norman sent: >I guess I should try it, I'm just not excited about having to have a custom >built version of jack, which then means I have to build all my jack apps from >source [afaik]. > >-Alex > >On 0, "sonofzev(a)iinet.net.au" sonofzev(a)iinet.net.au> wrote: >> >> >> On Fri Jun 12 11:12 , Alex Norman sent: >> >> >I get this error often but without an specific indication of why: >> > >> >LibFreeBoB ERR: Dropped packets on connection 1 >> > >> >And then I get a glitch in my audio. >> > >> >I use ubuntu and I have libfreebob 1.0.11-0ubuntu1 >> > >> >I have my cpu clocked as fast as it can go and very little load on my system [I >> >don't have my web browser open, I'm only recording audio using mhwaveedit]. >> > >> >I'm wondering if anyone has any strategies I can take to get rid of this? It is >> >super annoying because I'm trying to record records into my computer and every >> >time this happens I have to start the song over. >> > >> >thanks, >> >Alex >> > >> Not a solution, but have you tried FFADO as it is the successor to Freebob... I >> find it more stable with my hardware. >> >)

15 years, 6 months

Re: [LAU] q: HDMI audio

by Kim Cascone

thanks Raffaele!! here the output from [aplay -l]: ================================ kim@kim-laptop:~$ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog] Subdevices: 0/1 Subdevice #0: subdevice #0 card 0: Intel [HDA Intel], device 3: INTEL HDMI [INTEL HDMI] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: system [iMic USB audio system], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0 ================================= excellent!! :) now, does anyone know of a HDMI hardware interface that can serve as a studio audio I/O?

15 years, 6 months

hdmi audio I/O

by Kim Cascone

http://www.hdwise.com/Atlona-AT-HD570-HDMI-13-Audio-De-Embedder-p-769.html

15 years, 6 months

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Linux-audio-user June 2009