A few special boxes record the sounds of the room or the voice of the viewer and store away everything, only to release them at a future opening. Another box is a receiver that sends signals from one place to another. On another table are 3 boxes that influence each other acoustically. If you touch one, the other sounds. Throughout the game, the viewer can use the tone, noise and speech producers to embark on a discovery journey and to become creative him or herself.

Using a microphone in the sound gallery and a transformer matrix, Olbrisch accompanies the ascent to the exhibition room with sounds from the sound gallery and from the staircase. In addition to this, different radio stations can occasionally be heard, because the partially very strong station capability of the nearby Berlin TV tower can convert the microphones into radio wave receivers.

Such sound achievements are directed by a computer-steered sound conductor that contains information on the sound gallery«s past and present.

The 12-channeled transformer matrix is activated only by motion. So sound gallery visitors must keep moving in order to tap the acoustic path.

In its double function as sound path (leading from the south tower entrance via the spiral staircase up to the gallery room) and as a medium of documentation for all sound projections, the acoustic path directing system subtly encompasses this still unknown place. Within the dimensions of space and time, the system itself becomes infrastructure.

additional: virtueller klangraum / realer raumklang