Emu XL-7 & MP-7 User's Group

I want to take a specific drum track and chop it up, somehow like can 
with my Modular(LUNA). with the modular i simply take any soundsource 
and pass it throught the modular which acts as a gate. then i can 
take a loop and using Attack Sustain and decay control the amount of 
source to be output. 

The Desired effect would sound like a quantizes chooper beat and 
could be usefull for Pads or strings.

Apreciate a prompt reply

Best regards