SOUND AND MUSIC IN DEAD SILENCE.

In horror films, there is a lot of non-diegetic sound. This ranges from high pitch to low pitch. The tone of the music will change, depending on what is going on at the scene in that moment of time. The eerie sounds make the audience feel uncomfortable and uneasy. They would find that the sounds are taking control over them. An increase in tempo is shown when a piano, harp, guitar, trumpet or violin is used.
For the theme song of "DEAD SILENCE", a piano is used at the beginning, building up tension and suspense beforehand. An awkward deep sound is heard after this, which is telling the audience that there is a build up to something huge . After this part, the piano is heard once again, but this time, it is 3X faster than the first pitch of the piano we heard at the very beginning. The music then changes back to the clash of instruments, all mixed in with low and high pitch sounds. This creates a feeling of danger, which is a signifier to the audience that something really big is about to occur. The theme song ends with a screeching sound and then finishes off with the high pitch slow piano that was played at the very beginning. This is a huge signifier to the audience, making them aware of the build up to the damage, the damage itself, then running back to normality as if nothing had ever happened.

Each member of the audience has a different perception to how they would be "petrified". Some individulas would be scared if the sound was very quiet, but then has areas where an unexpected lod sound appears ourt of nowhere.
Traditionally, in horror movies, the more the non-diegetic music increases in sound, the most certain it is that it is a build up to a consequence. Viewers mainly feel threatened, under control, or would want to (unintentionally) jumo out of their seats. The audience feel a sense of discomfort when experiencing uneasy scenes, and / or terrifying sounds.

For the sound effects, they are mainly extremely loud, noisy hyperbolic, non-diegetic sounds. They are mainly used to scare the audience. Depending on the mood of the scene / character, the sounds will flow in accordingly. These could be loud chatter, screaming and crying. Some sounds are exaggerated, just to strike fear into the audience, therefore making them feel very uncomfortable.
The mixing of no-diegetic sounds and digetic sounds increase the fear factor within the audience.

Diegetic sounds are heard in some parts of horror movies, such as footsteps, ringing of the telephone, talking and dropping of objects.

The non-diegetic sounds have a greater effect on the audience, but the mix of non-diegetic sounds and digetic sounds, scares the audience immensely.