Specific Build Up Sound

How is a sound made like this…cutting a sound with a pitch up each time?



Here is one example…(Calling - Sebastian Ingrosso)



(Found at beginning of song…then again starting at 1:14)



http://www.youtube.com/watch?v=9yHkpumhwdA

I bet theres lots of ways to get the sound,



but couldnt you just use a square wave (pitch rising like you said) and then automate the filter with a lfo set to moderate resonance. Then just massage those values until your happy,

theres probably lots of chorus/reverb fx too

Yup, just actually did that! Thanks