Sound Analysis Research

Here is my sound analysis for a mixture of different film types, such as documentary and teaser trailer/trailer sound analysis.
Diegetic sound is something included within a film, it may have been added additionally to the film but it is something that sounds like it is within the film, such as someone talking or the sound of someone dropping a pen. This may include silence, and this may be used advantageously within a film in order to create some sort of dramatic effect. These sounds are implied to be present by the action of the film. As said previously, it can be used on screen or off screen depending on whatever it's source is within or out of the frame.
Non diegetic sound is something not included within the scene itself, so would be something like a soundtrack or a voiceover. It is a sound whose source is neither visible on the screen nor has been implied to be present in the action. It is something added for dramatic effect, and the distinction between diegetic and non-diegetic sound depends on the context and our understanding of the conventions of film viewing and watching. It includes incidental music, which is added for certain effect.
Editing of sound can be done in various ways; there are things such as sound bridges; going from one sound to another. There can be cuts in and out of certain shots to create effect, for example going from a voiceover on a documentary to a non-diegetic incidental music.
Sound is important within a film or documentary because it means a better experience for the audience, it can help determine the genre, for example a horror film would have slow music and a light hearted rom-com would have some upbeat pop music. The academy awards recognise how important sound is within film and they offer rewards for good sound within films.
Dialogue is essential within a film, and only a few exceptions can be made to this rule. It is a conversation between two people, and gives context as to what is happening within the scene. A commentary is essential for what I am making, because it is very rare to find a documentary being made without a voiceover. It provides information for the narrative, so within our documentary we will use voiceovers to inform the audience on questions to ask to interviewees and to also inform the audience on statistics that won't be included in the typography.
A score is music made specifically made to accompany a film. It is placed within the background of scenes, and usually isn't used very loudly. It may be used to make the audience more emotional about the film that is being made. It is usually incorporated within action films. Soundtracks are fairly similar, but they aren't made specifically for the film being made. These may be royal free, meaning anyone can use it within their film. The soundtrack for a film can be a large mix of songs, for example Forrest Gump contains songs from a large range of artists.
Sound effects are used within a film to create an effect, and it can be anything from loud footsteps in a horror film such as 'paranormal activity' to a feather flying in the wind in 'Forrest Gump'. They are diegetic and are added in post production of the film.
Ambient sound is a background sound that is present in a setting or location. Common ones are things such as birds flying away.