How animatronics dinosaur Voices are working when they open mouth, Help me please in my school proje

i am making a dinosaur robot for my school project but i don't know how to operate its voice, i need a dinosaur roar sound when my dinosaur open its mouth every time with different voices but unfortunately i don't know what items i need.  i want to know how animatronics dinosaurs, lions, elephant  etc sound works when they open their mouth, they have different voices every time, please let me know what mechanism they used ? 


Sign In or Register to comment.