Re: [LAU] FluidSynth fails to sintetize more 85% events generated by Drum machine ALESIS D4.

Midish can do that, yes?

Ken Ellinwood wrote:
> Mr Jedi Storm,
>
> I'm cc'ing the audio-user list again since others may be able to help.
>
> I use midi files instead of an actual hardware device like you do. I
> run a (home-made) utility which strips out the note-off events from the
> percussion track and saves the updated midi file. I then play back the
> resulting file with fluidsynth and the problem goes away.
>
> In your case you will need to configure a program to filter the events
> out before they get to fluidsynth. I've never done this kind of
> filtering so I don't know which software to recommend, but assuming such
> a real-time midi filter exists, it should be possible to create a chain
> by connecting the alsa ports of the various applications together
> correctly and make this all work.
>
> Ken
>
> --- On *Thu, 9/10/09, Jedi Storm /<jedi00@email-addr-hidden>/* wrote:
>
>
> From: Jedi Storm <jedi00@email-addr-hidden>
> Subject: Re: [LAU] FluidSynth fails to sintetize more 85% events
> generated by Drum machine ALESIS D4.
> To: "Ken Ellinwood" <kellinwood@email-addr-hidden>
> Date: Thursday, September 10, 2009, 6:07 PM
>
> KEn ,
>
> Excuseme but what do you mean with ; strip out the note-off events
> in the percussion tracks altogether ?
>
> I've the posibility to change default Instrument bank position as
> well with an editor ...
>
> Thank you very very much !
>
>
> 2009/9/11 Ken Ellinwood <kellinwood@email-addr-hidden
> </mc/compose?to=kellinwood@email-addr-hidden>>
>
> 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@email-addr-hidden
> </mc/compose?to=quozl@email-addr-hidden>>/* wrote:
>
>
> From: James Cameron <quozl@email-addr-hidden
> </mc/compose?to=quozl@email-addr-hidden>>
> Subject: Re: [LAU] FluidSynth fails to sintetize more 85%
> events generated by Drum machine ALESIS D4.
> To: linux-audio-user@email-addr-hidden
> </mc/compose?to=linux-audio-user@email-addr-hidden>
> 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/

-- 
David
gnome@email-addr-hidden
authenticity, honesty, community
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