ZynAddSubFX problem

#1

Hi all,

when I open an Ardour project where there are many MIDI tracks, those with the ZynAddSubFX plugin very often reset to the default instrument, so I have to reselect the correct instruments in each track. Now, if I close the project (after saving) and reopen it, the previously selected instruments are lost again.
Maybe there is a way to avoid this?
[Ardour 6.9.0 from repository, Ubuntu 22.04]

Thanks,
a.

#2

Put MIDI event filter from the x42 midi filter collection (x42 MIDI Filter Collection) before Zyn, set it to “Block Program Changes” and your problem may well be solved.

#3

Is this due to a MIDI patch/program-change message?

If so right-click on the track-header and deselect “Restore Patch”.

1 Like
#4

Yes it works, thank you.
At this point I put it before any plugin for security.

Bye,
a.

#5

That’s right, I didn’t realize that “Restore Patch” is selected by default. I will always uncheck it from now on.
Thanks,
a.

#6

Well, usually one wants to restore patch-changes that were sent to the track in the past, so that a given instrument patch/program is restored.

…but it does depend on the synth.

#7

Now the problem with ZynAddSubFX is solved.

Instead I see that the same problem occurs in those MIDI tracks where I put the
ACE Fluid Synth plugin (loading FluidR3_GM.sf2).
I select the “Harp” instrument (right mouse button , “select patch”, “Harp”).
The harp sound is correct. This is the configuration:

a
a1109Ă—647 190 KB

So I record the MIDI track playing a MIDI keyboard, and then I save and close the project.

But…when I reopen the project, in that track doesn’t play the harp, but the “Yamaha Grand Piano” appears selected:

b
b1201Ă—527 147 KB

So I have to select “harp” again, and again the sound is that of a harp.
But as soon as I close and reopen the Ardour project, the problem returns.

It goes without saying that I applied both of your suggestions:

-uncheck “Restore Patch”
-insert “MIDI Event Filter” by selecting “Block Program Changes”.

Thanks in advance for any suggestions.
a.

#8

Recheck restore patch, remove MIDI Event Filter.
That should fix this one. You do want the patch restored here.

#9

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