This installation is based on the concept of motion and sound. Almost all sound is obtained, normally, when one affects an object, like playing instruments, ringing bells, or clapping hands. We need always some devices between the physical motion of our bodies and the intended sound, or use parts of our body as devices. However, in this room are no touchable objects to produce sound with, just movements of bodies generating sounds of various kinds. In addition, the "shadows" of the participants, reflected on the floor, respond to what they play and improvise with there own phrases. Two networked macintosh computers are employed for this work. One generates processed sound, using Super Collider 3. The other detects the movements of the users and projects visual images to the floor, using DIPS3 and a set of Max/MSP objects, developed by the composer. These two computers are connected by Ethernet and OpenSoundControl protocol in order to share the parameters of each other. Several techniques and algorithms, such as ambisonic theory, Markov chain, and FFT based cross synthesis are applied to realise the sound space.

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