On 06.06.2010 23:44, Ken Restivo wrote:
> 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
>
>
Thank you for answers.
Yes, I also prefer command line tools! ;-)
So, I checked what's going on:
$ aseqdump --list
Port Client name Port name
0:0 System Timer
0:1 System Announce
14:0 Midi Through Midi Through Port-0
20:0 SB Live! Value [CT4870] EMU10K1 MPU-401 (UART)
24:0 USB Keystation 88es USB Keystation 88es MIDI 1
$ aseqdump -p 24:0
Waiting for data. Press Ctrl+C to end.
Source_ Event_________________ Ch _Data__
24:0 Control change 0 64 127
24:0 Note on 0 82 82
24:0 Note on 0 82 0
24:0 Control change 0 64 0
The above sequence dumped by aseqdump shows only one note event (lines
2+3: press+release) but I heard a delayed note as mentioned in my first
mail.
The keyboard seems to do things right, so I think it comes from qsynth.
Isn't that strange? I mean many people around there use qsynth, am I the
only one to have this kind of problem?
Once again, I appreciate any advice!
Thanks,
Nicolas.
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Received on Tue Jun 8 12:15:03 2010
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