A summary of his previous books on sound as well as an extension of them, this book is extremely insightful and captivating regarding not just the presence, but the meaning of sound in cinema. The word 'audio-vision' is simply meant to indicate that our perception of the cinematic image is constantly shaped, guided, contrasted and affected by sound in the cinema, just as sound is constantly affected by the image. Chion forcefully and elegantly argues that one cannot separate the two into distinct compartments, but need to deal with both simultaneously.