On 08.06.2010 12:13, R. Mattes wrote:
On Tue, 08 Jun 2010 11:55:01 +0200, Nicolas BERCHER wrote
On 08.06.2010 11:12, david wrote:
WAGging around: Is your USB MIDI connection sharing a USB bus with
other USB devices? Maybe some other USB device is doing something
weird with the bus and something isn't getting handled right?
No, please. This is highly unlikely. Iff something on the bus would
spoof the device ID of the Midi interface things would go crazzy long
before a note on event would be recognized ...
I agree and I thought that the midi keyboard driver would go crazy if
things goes wrong on the usb bus (which is upstream relative to the midi
driver and then the midi events...). But I still tested it!
Do you think this problem could come from an hardware failure into
my SB Live sound card?
How should that happen? If no midi note event shows up in the dump
the problem must be in qsynth (or the sound font it uses). What sound
found do you use, BTW?
Argh, I didn't thought it could come from the sound fount I use!
(Indeed, the hardware failure I suspected was "a kind of memory
corruption (fixed pattern interacting only with the 4 notes mentioned?)
leading to a wrong pointer which induces to loop through the wave
table... thus resulting in delayed notes... ok, it might sound crazy but
I thought about it!)
I have multiple sound fonts in qsynth settings (setup/soundfont tab):
1) /usr/share/sounds/sf2/FluidR3_GS.sf2 (Debian package fluid-soundfont-gs)
2) /usr/share/sounds/sf2/FluidR3_GM.sf2 (Debian package fluid-soundfont-gm)
3) AI-APiano02trans.sf2 (from www.sf2-files.com)
4) WST25FStein_00Sep22.SF2 (from www.pianosounds.com)
(... I have to admit that I don't master yet the way I choose the one I
want to play with and configure the presets things the way I want!)
Nicolas.
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