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Hear a short sample in RealAudio or MP3
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Harmonic Bridge, O+A since 1998 ...
Traffic passing on Highway 2 overpass activates harmonic series in two 16 foot "C" tuning tubes
afixed to the bridge. The resulting harmonic stereo field is installed in the reclaimed gothic
acoustic space beneath, emanating from two "Cube" loudspeakers designed by O+A.
This permanent installation has been running since 1998, placing the city of North Adams in the
key of "C" for nearly three years running.
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