Reply to I Want to Get This Sound and Have No Clue How

Hey guys,

I'm working on a song of mine and trying to duplicate an effect to no avail. The sound I'm going after is this

http://www.youtube.com/watch?v=ClXW_Fu0Pw4


The sound I'm after comes in around the 50 sec mark.

I'm not trying to duplicate the synth here, just that "wah-ing" whining sound its making. I can't tell if its an LFO trick or a formant filter or something else entirely but I'd really like to recreate it if possible.

Thanks in advance if anyone has any tips!