My initial thoughts about using sound in film
Sound can be used to create atmosphere at correct moments.
It can also be used bring out certain actions or movements so they are over obvious.
There can be music played in the background to give background noise, and to fill silence, along with sound effects such as slices or punches to emphasise actions.
It is important that the music is relevant to the scene and not too obscure.
Also natural sounds might already be in the scene like wind or character speech.
Reflective comment
I have learnt by looking at sin city a bit more about the different types of sound.
Such as stuff added in like a police siren when there are no police cars around, or amplified sound that is synchronised to the same action in the film.
