[The-Real-Link]

I listened to the first two. I can't be certain, but that's what I thought I heard (at elast some of those anyways) They are, of course, synthesized. They may be a percussion loop universal to certain MIDI sequencing programs that are popular in Japan. (Such as the famous "Frog" noise used by Shimomura, Kondo, Uematsu, and others...not sure what program or pad though.)