Re: [LAU] Sustain pedal issue with undesired repeated notes (m-audio keystation 88es + qjackctl + qsynth)

Nicolas BERCHER wrote:
>
> I have a problem I can't face alone on the digital piano I made on
> Debian Lenny with qsynth (v0.2.5-2.2), qjackctl (v0.3.2-1) and an
> m-audio keystation 88es keyboard.
>
> When I play the piano, some notes will repeat themselves after a few
> seconds only if I keep the sustain pedal pressed, just like a delay
> effect would do.
> I reported that only 4 notes are concerned for the moment, they have
> different repeat delays:
> G : ~7.5 sec (G4)
> G# : ~7 sec (G#4)
> A : ~6.5 sec (A4)
> A# : ~6 sec (A#4)
> Note that the notes above, relatively to the middle C of a piano
> keyboard called C3, goes from G4 to A#4.
>
> Could this be due to an hardware issue in the m-audio keyboard?
>
> Thanks a lot for any idea on how to track down and correct this (if
> possible).

Try putting a MIDI monitor program between the keyboard's MIDI output
and QSynth's input port in QJackCtl. Look for the repeats there.

If you have KDE: http://kmidimon.sourceforge.net/

For Gnome/GTK: http://home.gna.org/gmidimonitor/

Best,

dp

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Received on Sun Jun 6 20:15:01 2010