8 Jun
2010
8 Jun
'10
11:37 a.m.
On 08.06.2010 11:21, David Santamauro wrote:
Hi,
On Tue, 08 Jun 2010 10:57:13 +0200
Nicolas BERCHER<nbercher(a)yahoo.fr> wrote:
Yes it is, you're right, but it happens only for 4 notes among 88 I can
play!
If this putting kmidimon between my keyboard and qsynth can solve the
problem, I'd also like to understand why. Does it mean there exist
multiple midi standard to describe note on/off events?
Nicolas.
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 had a similar problem and solved it by putting kmidimon between my
keyboard and sequencer.
Could it be that qsynth doesn't handle NOTE ON with
velocity of 0 as NOTE OFF? Although I imagine that translation should
be happening at a lower level... just a guess.