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

[David Santamauro]

On Tue, 08 Jun 2010 12:15:13 +0200
Nicolas BERCHER <nbercher at yahoo.fr> wrote:

> On 08.06.2010 11:21, David Santamauro wrote:
> >
> > Hi,
> >
> > On Tue, 08 Jun 2010 10:57:13 +0200
> > Nicolas BERCHER<nbercher at yahoo.fr>  wrote:
> >
> >    
> >> 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.
> >>      
> > Actually, there are two note events and both are NOTE ON, one with
> > velocity of 82 and the other 0. The velocity 0 should be
> > interpreted as NOTE OFF.
> >    
> I forgot to tell you that the third dump line, which correspond to
> the key release, appeared *after* the undesired delayed note (I've
> kept it pressed about ten seconds).
> So I think that the keyboard events are well interpreted by qsynth
> since I can play piano in a standard way: notes can ring as long as I
> want when I press/release the keys!

Aha ... sounds like an attack issue with the soundfont. You press a
key, there is an initial attack, the sample loops and reattacks.

  - do the notes repeat if you play them staccato, i.e., key
    on/off < the time seen for the repeated notes to trigger?

  - Have you tried a different soundfont and/or patch and is the
    behavior identical regardless?

David