Diegetic and Non Diegetic Sound (Goodfellas 1990 [first 2 minutes])

Non diegetic sound is herd right from the start as the credits role you can hear cars rushing by. This then leads on to diegetic sound as you can now see the cars driving along. Non diegetic sound is shown again as we can hear banging but do not know where it is coming from as it is not implied by the action on screen. Cars whizzing past is carried on to keep up the motion and idea that they are driving.

When they pull over we hear them getting out of the car but dont see it, we can also hear their foot steps as they tread on plants along with the sound of mosquitos that we can not see. Small sounds like pulling out a knife and opening the car boot are emphasised as they help to build/maintain the tension. This is diegetic sound along with the sounds of the man being stabbed as the sounds are implied by the action.

We hear another character fire a gun and this is closely followed by non diegetic sound of another car passing, this keeps the tension as it makes you think there is the possibility of that cars driver hearing the gun shots and coming to investigate.