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[fluid-dev] Sound fluid/qsynth/rosegarden not giving stable audio output
[fluid-dev] Sound fluid/qsynth/rosegarden not giving stable audio output after a while
Thu, 10 Mar 2005 21:12:22 +0000
For some time I've been trying to set up a combination of
fluidsynth/qsynth/rosegarden, with success, however after playing sound for
a bit, short pops start appearing in the sound, which gets worse over time
until there's an almost constant rattle/hum in the audio playback.
Completely restarting Jack and qsynth solves the problem.
Something that might be relevant to this problem is that I've borrowed my
moms casio CTK-611 keyboard (yeah I know YUCK casio), which I've been using
as master keyboard
for a while. Running amidi --dump I've noticed that this MIDI keyboard never
note-off messages. Instead, it sends note-on MIDI messages with a velocity
of 0 to turn
off the note. So, obviously it doesn't work the way MIDI was designed. What
can I do?
The piece I'm putting together uses some non-looped soundfonts (piano) and
some looped-soundfonts (strings and horns). I suspect that once a non-looped
sample reaches its end, it no longer needs processing by fluidsynth and it
will be removed from the list of samples to play. However a looped sample
never ends. Could it be that the poor MIDI implementation of the keyboard
forces fluidsynth to play more and more and more looped silent samples?
I realize that ultimately I should simply replace the keyboard by one that
has a proper MIDI implementation, but unfortunately at this moment that's
not an option to me. Could the poor MIDI implementation be the cause of my
trouble, and if so, is there anything that can be done to turn a
zero-velocity note-on message into a note-off message?
Where in the code would I start looking to realize this?
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- [fluid-dev] Sound fluid/qsynth/rosegarden not giving stable audio output after a while,
Marc Brevoort <=