Maybe U could just get off by actually sampling!?..

I guess best thing is to kinda mix several sounds (as I'm not totally sure what u r looking 4... a bit of noise with some simple overdriven filters can do some damage... lots of resonance ... But I guess mainly almost only hardware synths will give ya what u want .. try 4 example noise with a 24 db filter wack the resonance 2 the max now play with the cut-off... use a rnd wave lfo 2 modulate cut off another lfo with the same settings but really small mod on the resonance .. this gives ya more of the highpitching sound... ... if u have a really fast LFO (around 25 hz or more) aplly that 2 the filter cut off or maybe aply 2 amp (mod)...

Dx can b tricky 2 program and more difficult 2 predict but it can "easily" do what u want!!!

Hope u can read thru the gibberish...

Z