The sound of the screen + weak light) There is a couple who sits at row I, they are focusing on the showing movie. Some noises behind disturb them so that they can’t concentrate.
The other noise behind the two couples again disturbs them. They both turn around and stare annoyingly at a noisy group. They are chatting glibly and showing their knowledge and prediction about the movie.
There is only the dark screen with different kind of noise. The meaning is that, if we just zoom at a person or a couple, their noises are not seem to be significant, but, looking at the whole picture, each of them contribute unintendedly to the seriousness of the cinema noise. A black background shows that there is no different among them in that mess of noise.
The noise make the couple (row I) turns around and feels uncomfortable when seeing the couple behind them discussing about movie so excitingly without notice elsewhere. (The mumble and the giggle are heard constantly).
However, the noisy group stops to chat and turns around, so do the two couples in front of them. It is not the noise made by an individual or a group, it’s a mess of noise. They’re all very surprised, turn around and then look at each other.