Sound

Sound is very a influential part of film trailers as it sets the mood and clearly portrays the genre so I need to make sure I use the right sounds to ensure the horror genre is clearly recognisable. To do this I will use loud thumping sounds like footsteps and scary, over the top loud noises to replicate a jump scare.

Types of sound

Diegetic

Diegetic sound is sound that would actually be in the scene when recording. Although the volume of this can be increased to make it more worrying for the audience and so they can clearly hear it as in real life it could be hard to hear something like footsteps and creaks. In horrors it can make something that isn't even scary become scary because of the loud sound, examples of this is in the film Conjuring where they increase the volume of doors slamming and even hear the motion of the door swinging. 

Non-diegetic 

Non-diegetic sound is used to add noises that wouldn't usually be in the actual scene when recording, this is added during the editing process. This is done in horror to add tension and suspense to a scene and scare the audience and also by adding loud abrupt music to make the audience jump. An example of this is in the film insidious where they use the same loud piano sound frequently when there is a jump scare, this is good because although it is repetitive it does still make you jump and creates a familiarisation with the audience. 

In my film trailer I will have to use the perfect mix of diagetic and non-diegetic sounds to ensure it is still realistic but does scare the audience.