Frequency 2156 looks like a crowd-source audio project that tells the story of a future apocalypse scenario. The audio clips that are accessible on this site are supposed to be sent from the future back to us. This immediately creates an interesting story by tying the possible fate of our future into the project.
Audio works particularly well as a medium because of what it includes and excludes as a medium.
If this was flushed out with video content, there would probably be a large disconnect between the world we’re trying to paint and how it’s being visually represented. This is simply because it’s hard to find apocalyptic settings or clothing as a college kid, and then pull off a good story.
Also, if it was all text-based, the project may definitely seem more fictional than we want. Audio serves as a great middle ground. It allows imagination, but also provides ample amounts of guidance to the listener. So, audio queues and verbal stories would hint at how different the world has become without removing the aspect of human-to-human communication that we can all relate to. The crowd-sourcing accentuates this kind of communication – every story has a unique voice because it is submitted by a different person.
There is also the geographic layer of this story. The map gives regions, and any audio node under a region can carry the extra context of that part of the world.
Overall, this is a very unique project, and it seems to be carried out optimally.