Time is always flowing forward, unlike the image that has stopped time.
We are inundated with images, they spread themselves across the horizon. We understand their place in the space they occupy. But sound occupies no space, that is physical, but it does permeate the virtual space, the space of air, the ether, the ephemeral. That is why we must think differently about sound than we do about the image. Sound requires a specific amount of time to come into being, the image takes up its full allotment of space immediately, only needing time to absorb it. The image is static (physically), the sound is kinetic, that is, it moves through time and the ethereal space of air. Sound can be represented in space, but that is not the same thing as its representation in time, which is where sound exists.
Sound is like a river: it twists and turns, it speeds up and slows down. For that reason, it’s place in the narrative is unique, it’s place in the artist’s output demands a different kind of attention to its detail. That is the current problem at hand, as we consider this vexing relationship between sound and image. (Let alone the integration of the two!)