lpd said:

Before I new it was supposed to be a krayt dragon call ....I thought the sandpeople knew of Kenobi and were scared of him.

.....the appearance of Kenobi scaring them away, as a kid, always made more sense to me than the noise scaring them.

I'm with you all the way! Honestly, I'd prefer it if instead of an animal noise he was just shouting and yelling and waving his arms. Would back up his line "They're easily startled, but they'll soon be back."

However, the original noise is perfectly fine and, like everything else, never needed to be changed. The new one is just embarrassing.