Answer:
The scene I analyzed is the opening scene from the movie Slacker. The character gets off a bus and goes into a cab. Then the character begins to talk to the cab driver. He talks to the cab driver about a theory of dreams and thoughts creating alternate realities. The driver never responds and drives in silence, hardly acknowledging his passenger.
The sounds in the scene are the sounds of the cab driving on the road and the character talking. The sounds of the road make it seem like the car is moving: there are the sounds of traffic and the noise of the wheels on the road. There is no music and this helps the viewer focus on the words the character is saying (which sets up the whole film).
By limiting the sounds in the scene, the director (who is also the guy talking in the cab) limits the scope of the scene. This, in turn, focuses attention on what he wants the audience to focus on without interference or competition of other sounds.