Thriller Genre: Sound/Music

Each genre of film will have its own conventions and stereotypes of what sounds should be used to achieve certain effects. many feelings and emotions can be invoked due to the affect of music.

Crescendo
One sound of these is very high crescendo based sounds.
Crescendo based sounds and effects are those that increase in amplitude/volume the longer and more prolonged a scene goes on. this is to signify a tension or potential risk that a character may face in the story. This tension proceeds to help suggest to the audience that an event could occur. this is important as the increase in pace effects the viewer as they will start to subconsciously breathe at the same rate potentially changing their heart rate causing a better reaction to the event.



Fast paced
There is a lot of fast paced music within thrillers that allow them to evoke emotion and ensure the audience can feel the effect and immersion of a chase scene or fast paced event, this subconsciously starts to make the audience feel a thrill and. The fast pace comes from an increase in BPM (Beats per Minute) this is done for the expressive effect that creates a sense of chase or build up, the faster the music, the more intense the situation and the more a persons heart beats causing them to breathe quicker and quicker.



Slow build up sounds
Slow build up sounds are used create the sense of danger approaching this features the use of a crescendo that builds and builds until the imminent danger arrives, but this is a long drawn out process with many halts within the music or returns back to the slow build ups as if it were looped.
the long drawn out sounds keep the audience grasped for the firs "loop" in which they will feel a suspense, as this starts to repeat and die down they left hanging as if nothing is about to happen this then relaxes them and provides a "Shock" creating a further appeal to the film.



Pause in sound.

The use of pauses within a sound track help to portray emotions from a character or show something devastating that may have happened this helps to support these emotions as the atmosphere is sad sounding or that of a dramatic nature which can provide moments, pauses, for actions that help portra death, drama and sadness.



Infrared Sounds

Infrared sound is a technique mostly used within horror films, it is the reason why things "Sound scary" or even "Feel scary". They are lower frequency sounds that are below the hearing range of the average human, around 20hz to 20Khz, this means they are around 15hz and below. These vibrations obviously cannot be heard and thus trigger the instant primal fear in the brain. Due to this these vibrations are "felt" causing us to feel deep beats, steps and growls that we otherwise wouldn't hear causing us to be emmersed deeper into the sensory mine field of the film experience.