Space Replay Installation by Francesco Tacchini
‘A hovering object that explores and manipulates transitional public spaces with particular acoustic properties. By constantly recording and replaying these ambient sounds, the levitating sphere produces a delayed echo of human activity.’
The balloon itself is loaded with an arduino recording and playback system which acts as ballast to allow the helium balloon to achieve neutral buoyancy.
This is an interesting approach to presenting such an idea as the untethered balloon creates the illusion of a temporal portal that you can’t help but stare into and try to explore.
The full project page can be found here.