discuss the use of sound as it supports the narrative in the sound version of hitchcock s film blackmail

Discuss the use of sound as it supports the narrative in the sound version of Hitchcock’s film Blackmail. Identify how sound and also the choice of silence where sound might otherwise have been used enhance drama and tension in coordination with camerawork and editing, focusing on particular scenes of your choosing. Keep in mind the limitations of the sound medium in 1929.