The interactive sound installation YYZ consists of a symmetric room where six loud speakers are fixed on the crossing points of the axes x, y and z. Each pair of loud speakers of one axis emits white noise. However, one of them emits the white noise modulated by an extremely low frequency. The combination of the two loud speakers gives the impression that the sound is continuously changing its source, which seems to be moving in a circular manner along the plane formed by two axes. At the room center, the system origin, is a potentiometer that allows the spectator to change the spinning frequency. The loud speakers are connected to each other by transparent insulation wire; Thus, drawing on the walls the orthogonal planes. The letters X, Y and Z denote the axes.

The sound excursion throughout the space, brought by a special device built for this installation, allows the spectator to look over the spectrum searching for his/her own spatial frequency. The sound becomes an approaching way to recognize the space. The search for space-frequency tuning is executed in real time by the spectator action on the universal background noise. The interference inside the "black box" (it can be inferred because all circuits were designed for this installation) allows the installation to tune in with the space-spectator without prior conceived relations. Therefore, the searching for space-frequency-spectator tuning is unbarren.

Circuits, using microcontrollers, designed for sound modulation - specially designed for this installation.