Alesis QuadraSynth Plus manual

Editing Programs: Chapter 6

•Velocity relates to how fast a key goes from the key up (note off) to the key down (note on) position, and therefore represents the dynamics of your playing.

•Release velocity relates to how fast a key goes from the key down (note on) to the key up (note off) position. Example: Use this to affect the level of a sound’s release based on how fast you remove your fingers from the keys.

QuadraSynth Plus Piano Reference Manual 94