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THE DEVICE: A real-time machine
composed of elements:
1. THE SODIUM LIGHTS: Bathe the tunnels in a calming pool of light at
the entry and exit to the freeway space.
2. THE SEARCHLIGHTS: Frame the space of the freeway with intense beams
of white light which move very slowly and can be seen from a great distance.
3. THE SENSORS: Automatically collect statistical data from the flow
of vehicles on the freeway, the population of pedestrians on the overpasses,
the position of the lights, and the ambient sounds of the site. the
data are transmitted to the processor.
4. THE PROCESSOR: A computer equipped with a digital signal processor
re-maps the data and represents it as sound. the digital signal processing
technique of convolution allows one to use a sound source to dynamically
filter and shape another sound source. for example, the sound of a passing
car could be articulated by words spoken on the overpasses. the energy
of traffic will also be used to control dynamic spatial sound localization
between an array of high quality loudspeakers installed on the overpasses.
statistical changes (numbers of people, speed of vehicles, etc.) will
automatically influence the sonic environment.
5. THE ARRAY OF SPEAKERS: On the overpasses create a sonic "place" in
the vacant fragments of the city grid.
6. THE TRANSMITTER: sends the raw data from the sensors to the processor
and transmits the processed sound to the space of the freeway. ( FM
wavelength will be identified by sign )
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