1. Purpose of a Voice Over and
Sound in a Trailer
By
Munpreet Marbay

2. A voice over is used to help portray the narrative for a film.
This can come in two from, the main character telling the narrative or
someone else.
A voice over:
Gives information about the film, such as the release date.
Commonly used for documentaries or news reports.
Used in radio, television, film making, theatre and production.
Example of a voice over used in a trailer:
http://www.youtube.com/watch?v=34x6m-ahGIo

3. Sound is used to help tell the narrative of a trailer.
Can be used to set the atmosphere, eg deep sound is used depict a
scared and sad mood, where as a upbeat sound is used to depict
happiness.
Different types of sound:
Ambient sounds: sounds in the natural in the surrounding
Non Diegetic Sound: Sounds which are used but you cannot see the
source of the sound, this could be the narrators voice.
Diegetic Sound: Where the source of the sound can be seen, this
could be sounds made by objects in the story.