In the entrance area of the MAAT building, the hum of traffic and the resulting structural resonance of the Ponte 25 de Abril are always audible. I propose to augment the bridges’ environmental sounds with harmonically filtered sounds, made from recordings of the bridge, which will be played through the existing loudspeakers in the MAAT entrance area.
This added artificial sound layer will slowly appear and disappear, continually shifting between the augmented (loudspeaker) and real (environmental) bridge sound. Each visitor’s unique perception of the real and the augmented sounds is determined by proximity to the loudspeakers. The presence of the augmented sounds will be more pronounced closer to the entrance.