Sound In Media Most films also use sound that we know has been added, things like voiceovers, and background music. This is called non-diegetic sound . non-diegetic sound is often done in post-production. You can use music to set the scene and show where and when the film is set to create a sense of irony, use happy music for a sad or scary scene. The majority of films also use sound that hasn't been added (excluding the rarity that is silent movies) or rather is created naturally, things like a car starting or a door slamming shut, this is called diegetic sound. This is Usually recorded using a microphone and taking or changing the audio for it to be clearer in the end result. How To Use Sound In Media Sound enhances the imaginary world, it can provide depth, establish character and environment, introduce a new scene or cue the viewer to important information. Sound al...