Hi, I'm getting some strange behaviour between LinuxSampler, JACK and the USB audio driver and I'm not quite sure where to look to narrow it down further.
What *appears* to be happening is that when LinuxSampler is being output to JACK and JACK is using a usb audio device (with or without an intervening client) then there is a weird "arpeggiation" of the notes being played which sounds like something is messing with the events in the ALSA sequencer, the additional notes are the fifth and octave of the original note it sounds like though I haven't tried it right across the keyboard, ( this happens whether the MIDI input is from e.g. a USB keyboard or aplaymidi.) Other clients (e.g. AlsaModularSynth ) in exactly the same configuration play fine as well as does ardour and so forth. LinuxSampler outputting to JACK when using the internal (hda-intel) audio does not exhibit this behaviour. LinuxSampler outputting directly to the usb-audio doesn't do it either. Examining the sequencer input by hooking up both the MIDI input of LinuxSampler and aseqdump to the MIDI pass-through port and pointing aplaymidi at that doesn't show anything untoward which makes me doubt my original theory, but what I would like to be able to do is peek inside the sequencer and see all the events rather than just the ones on the port I am listening on - is this infact at all possible? Can anyone suggest a way to narrow this down and determine exactly where the bug is? I'll confess right now that I don't have the most up to date alsa drivers (or JACK) which leads to an additional question or two as I'm sure the first advice will be to get the 1.0.15rc1 ALSA drivers - I've stuck with the 1.0.13 that came with the Mandriva 2007.0 because I'm on X86-64 but would like to keep the 32bit alsa-libraries *as well* so I can get sound from flash player (32bit only ) with nspluginwrapper (and lets face it youtube is pretty crap without the sound :-), so my question is if I was to update the drivers will the older libraries still work (albeit with any bugs which might be there,) or can I also upgrade the libraries (64bit) and expect the older 32bit ones to carry on working? Secondary to this when I try to compile JACK it tries to link against the 32bit libraries in /usr/lib rather than the proper ones in /usr/lib64 - does anyone know a workaround or shall I just hack something and report a bug against JACK? Thanks /J\ -- This signature kills fascists ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
