audio puppeteering
n.— «To that end Mr. Stanton enlisted the man who created the grammar of the “Star Wars” robot R2D2, the veteran sound designer Ben Burtt. Mr. Stanton wrote a conventional script—“Hi, I’m Wall-E”—and Mr. Burtt essentially translated the dialogue into robot, something he calls “audio puppeteering.”» —“Pixar Gambles on a Robot in Love ” by Katrina Onstad New York Times June 22, 2008. (source: Double-Tongued Dictionary)