On Rainlith, the primitive naturally granular sound of a big rainstick gets explored in real-time by cyber-age sound manipulation tools.
It's an interactive piece in witch the movement of the audience's body activates an electric motor, making a reflex movement on the structure that embraces the instrument.
The sound of the rainstick is captured and processed in realtime, and sent 24 meters above, filling the empty space of a old industrial cereal container.
The reverberated acoustic mix is then received back by the audience in the spot right below the opening of the container.

hardware:
microsoft kinect
arduino duemilanove
H-bridge (hand made)
24v 6A DC motor
CPU
zoom H4N
FM emitter / receiver
ion ipa3 portable speaker

software:
MAX/MSP
Max for Live
OSCeleton
OpenNI
Nite
toxiclibs

special thanks:
Nicola Henriques
Susana Luiz
Luís Pereira
Paulo Carocinho
André Sier
Daniel Coimbra
Ruben Santos