quick drop at the end of the note - logic pro 9?

[Extreme-G]

This is so hard for me to put in words for some reason, so I'm going to try to explain this best as possible. I'm trying to achieve this drop sound at the end of a chord, it's like it just shoots down.. it's a common sound in electro house music (e.g. in my mind/glad u came - chipmunk kia commercial). yeah, u hear it in that song too.. it's one of my favorite traits of EDM. but i have no clue how to achieve it in logic pro 9? gosh, i wanna so badly figure it out. i hate when things are so hard to explain lol.

So here's an example of what i'm talkng about, listen to this sample. this trait is present in this song. it's like an instant quick dropping sound. listen to parts 2:47 and 2:54/2:55 - that drop..thats the sound i want to achieve!




could anyone help me out, please?

Thanks much...