Anemo (by Ogawa et al, 2005)
“Anemo” is a wind tunnel connecting to spaces. The activity in each space changes in to wind and blows into the other room, turning a propeller. An “anemo” is placed in two distant locations. “anemo” detects sounds within a room and triggers its ounterpart’s propeller to spin. “anemo” spins in sync with conversation or music in the other room. As the sounds grow louder, “anemo” spins faster.
Source: Ogawa, H., Ando, N., and Onodera, S. 2005. SmallConnection. In Proceedings of the 13th Annual ACM International Conference on Multimedia (MULTIMEDIA ’05). ACM Press, 1073–1074.