The 'Tusken Raider cry' can be heard when a man is on top of an upturned car. The sound effect was created by Ben Burtt, the Star Wars sound designer who famously developed sounds for Chewbacca, the TIE Fighters, lightsabers, Darth Vader's breathing, and more. For the Tusken Raiders, Burtt just made some surprisingly minor adjustments to the bray of a donkey.