 Vampyr was challenging for Dreyer to make as it was his first sound film and had to be recorded in three languages . To overcome this , very little dialogue was used in the film and much of the story is told with silent film @-@ styled title cards . The film was shot entirely on location and to enhance the atmospheric content , Dreyer opted for a washed out , soft focus photographic technique . The audio editing was done in Berlin where the character 's voices , sound effects , and score were added to the film . 
