| SIRENES
Inside of an empty gallery, the movement of people resulted in vocal chords, which resounded in different quantities and intensities, depending on the number of visitors and their movements. The variable sound structure created varied in range, from the threshold of hearing to the threshold of pain. Under the gallery floor, fourteen stepsensors were installed, by means of which a computer registered and evaluated the movement of people. Based on the data acquired, it picked vocal from a memory database of sample sounds, and transmitted them to speakers, which were placed in such a manner that a listener could not specify the source of a specific sound. The vocal sounds were created from the recorded vocals of the opera singers, and they were arranged into a structure based on the dorian mode. The sound equipment was adjusted specially for the acoustic qualities of the gallery chapel and positioned under the floor..
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