 Dreyer shot and edited the film in France and then brought it to Berlin where it was post @-@ synchronized in both German and French . Dreyer did the audio work at Universum Film AG , as they had the best sound equipment available to him at the time . Most of the actors did not dub their own voices . The only voices of the actors that are their own in the film are of Schmitz and Gunzburg . The sounds of dogs , parrots , and other animals in the film were fake and were done by professional imitators . Wolfgang Zeller composed the film 's score and worked with Dreyer to develop the music . 
