How can a voice whose source is never seen--such as Hal in 2001: A Space Odyssey or the mother of Norman Bates in Psycho--have such a powerful hold on an audience? When does "synchronized sound" fail to link bodies to their voices, and how do such great stylists of sound film as Jacques Tati, Kenji Mizoguchi, and Marguerite Duras deploy the power of the voice? In this brilliant essay, Michel Chion, internationally cited authority on the history...