This demo shows the player has assigned Filter and Resonance. Two more useful parameters are Arp Gate Time (length of notes) and Arp Velocity (will vary the sound of the Voice somewhat). A third parameter is Arp Unit Multiply. This will allow halfing or doubling of the playback.
Another important features is to vary the number of keys you hold down and/or play a melody with the arp turned on. We can get many variations from one arp type by experimenting how we "play" the arps.
Joe H