10 Sep
2009
10 Sep
'09
3:36 p.m.
I'm running fluidsynth/qsynth in a 64studio distribution.
I'm generating MIDI events from a Drum Machine Alesis D4 directly to
fluidsynth through a MIDI In port and fluidsynth fails to sintetize more
than 85% of the hits on the PAD.
Facts : 1- Fluidsynth is receiving MIDI events from every single hit on the
PADs. (checked with amidi & fluidsynth -v)
2- Fluidsynth is able to reproduce every single Midi event if it's generated
by a Midi keyboard or Virtual Keyboard.
3.- If I connect the Alesis D4 module to a Hydrogen dumr machine , it
reproduce and sintetize every single stroke without problem.
4.- After do some debugging I have been able to see the following :
MIDI Keyboard or Virtual Keyboard generate NOTE ON and NOTE OFF events , The
alesis D4 only generates NOTE ON midi events.
Thank you for the support , I'm facing a Live gig in less than 2 weeks and I
would love to use fluidsynth and my new created midi instruments !
**
10 Sep
10 Sep
9:11 p.m.
New subject: FluidSynth fails to sintetize more 85% events generated by Drum machine ALESIS D4.
On Thu, Sep 10, 2009 at 07:36:06PM +0200, Jedi Storm wrote:
MIDI Keyboard or Virtual Keyboard generate NOTE ON and
NOTE OFF events , The
alesis D4 only generates NOTE ON midi events.
This will be the cause of the symptom.
Change the D4 configuration to generate NOTE OFF events?
I've checked, and fluidsynth has no documented option for inventing the
NOTE OFF events, so you have to generate them.
I've briefly googled, and there are mentions of changing the D4 to
generate NOTE OFF events. I'm not familiar with the D4 myself though.
--
James Cameron
http://quozl.linux.org.au/
9:40 p.m.
New subject: FluidSynth fails to sintetize more 85% events generated by Drum machine ALESIS D4.
It doesn't matter if they are note-off or note-on with a velocity=0, fluidsynth treats
both as note-off events. You are experiencing a bug which occurs when a note-on is
followed shortly by a note-off or note-on-velocity-zero event. If the temporal spacing
between the two events is short enough that fluidsynth processes both events during the
same cycle, then audio for the note-on is never generated. This occurs most frequently
with percussion tracks since the note-on and note-offs are spaced very closely together.
The only solution I've found is to strip out the note-off events in the percussion
tracks altogether. Its a pain, but works pretty well.
Ken
--- On Thu, 9/10/09, James Cameron <quozl(a)us.netrek.org> wrote:
From: James Cameron <quozl(a)us.netrek.org>
Subject: Re: [LAU] FluidSynth fails to sintetize more 85% events generated by Drum machine
ALESIS D4.
To: linux-audio-user(a)lists.linuxaudio.org
Date: Thursday, September 10, 2009, 4:10 PM
On Thu, Sep 10, 2009 at 07:36:06PM +0200, Jedi Storm wrote:
MIDI Keyboard or Virtual Keyboard generate NOTE ON and
NOTE OFF events , The
alesis D4 only generates NOTE ON midi events.
This will be the cause of the symptom.
Change the D4 configuration to generate NOTE OFF events?
I've checked, and fluidsynth has no documented option for inventing the
NOTE OFF events, so you have to generate them.
I've briefly googled, and there are mentions of changing the D4 to
generate NOTE OFF events. I'm not familiar with the D4 myself though.
--
James Cameron
http://quozl.linux.org.au/
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2 comments
3 participants
participants (3)
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James Cameron -
Jedi Storm -
Ken Ellinwood