random arppegiater sound - r2d2

[NoLie6]

Hi together,

I am searching for a patch, or the technique behind such a patch.

The sound I am searching for is the one everyone might have been heard. Its a sound which let people think of computer, telecomunication or robots. Its a arppegiator based sound of random notes (don't hear a dur or moll thing so maybe complete random?). But it looks like it is not only the sequence of tones, but also the ton sound, because when I randomly play notes at the keyboard it is not the same.

The sound is similar to the sound parts of R2D2 if you are a starwars fan. But I want it as clear as possible without other noise or interferance.

The best sample I found on youtube:
http://www.youtube.com/watch?feature...v=aOk7ySEeULo#!

Maybe there is already such a patch or someone has a good wav file of it. I need the sound for a game I am programming for android.