Two audiovisual and film basics - sound and image - are created by the same lines engraved directly on primary audiovisual medium - film track - in order to trigger the most harmonic relatio... Read allTwo audiovisual and film basics - sound and image - are created by the same lines engraved directly on primary audiovisual medium - film track - in order to trigger the most harmonic relationship that is possible between them. In this film you can see the sound and hear the image... Read allTwo audiovisual and film basics - sound and image - are created by the same lines engraved directly on primary audiovisual medium - film track - in order to trigger the most harmonic relationship that is possible between them. In this film you can see the sound and hear the image.