Cymbal Crashing Techniques Tough question


Junior Member
Greetings timekeepers!!!

I've often seen drummers create a kind of "two-tone swish" when playing by striking two different cymbal one with each hand to create this sound. I may be describing it wrong but it's as if they are lighty striking one cymbal a split second before they crash a second cymbal harder...creating a "swooshing sound". What is this called? How is it done and where can I find examples of it?