“I knew the sound was part of the foundation of what the movie was going to be,” George Lucas explains in this exclusive clip from Midge Costin’s “Making Waves: The Art of Cinematic Sound.” Ben Burtt, ...

Add Yahoo as a preferred source to see more of our stories on Google. The trick, he says in the clip, was spending time with a young bear and using bread to coax the sounds from the animal. The words ...