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

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On Sun, Jun 06, 2010 at 10:15:03AM -0400, Dave Phillips wrote:
> 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/
>

For none of the above (my preference): aseqdump :-)

-ken
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