hard to explain, when a patch,ensemble  strings for example plays, in the tail of the release along with the decaying reverb is something like a rattling shuffling type sound, but apparently only if I hold a key down. so something in the sample tail is playing.
well I just loaded an individual patch string ensemble -long and hear the same noises even if I lift the key

I was looking at your avatar and have to ask...

Is that what you get when you cross a chicken with an Organ?

cclarry
I was looking at your avatar and have to ask...

Is that what you get when you cross a chicken with an Organ?

its a play on an OLD Yamaha DX patch that was supposed to sound like a B3, the name of the patch was Ham N Egz..
AFA the sign ..its a german restaurant specializing in breakfast food Ham Und Eggs...
 
sigh...

Sehr gut, ja?
 
Just a guess, but is there a [virtual] noise gate in the patch?  Sounds to me like either that or a filter/amplifier envelope issue.

i don't kniw with if it's what you're talking about but i do know that i heard in some patch a sine waves added to, create low rumbles (in albion 3 if i remeber well) ...it doesn't bothers me since i use to do it on my own ...