Space Replay by Francesco Tacchini

Here is a really interesting sound installation that illustrates one of the many fascinating uses for the Arduino  open-source electronics prototyping platform (which you may recall Carlos Mello used for a project last year).

“[Space replay is a] hovering object that explores and manipulates transitional public spaces with particular acoustic properties. By constantly recording and replaying these ambient sounds, the hovering sphere produces a delayed echo of human activity.”