I am currently using a TD-20 to trigger ZD sounds and, for most things I have tried to do, it has worked out extemely well.
Today, I was trying to work on a few rudimental solos to improve finger control and quickly realized that playing "rolls" is difficult, if not impossible. Has anyone figured out how to play 5, 7, 9 stroke rolls on the ZD that sound nice and even? Is the problem that there is no mesh head or bounce capability?
I started playing fast single stroke rolls, which works to a point; but, then began experimenting with this kind of finger approach:
5-Stroke Roll: RMF, RIF, LMF, LIF, RMF (or) LMF, LIF, RMF, RIF, LMF
I can get up some steam with practice, but it is still very challenging to produce a true "roll" sound.
P.S. I did find a Roland percussion patch is called "snare roll," but it does not appear to be controllable in terms of duration. I couldn't make it work for a 5-stroke or 7-stroke roll, but it might be OK for an extended roll.