Stonehenge Had Lecture Hall Acoustics

http://www.scientificamerican.com/article.cfm?id=stonehenge-lecture-hall-acoustics



The stone slabs of England's Stonehenge may have been more than just a spectacular sight to the ancient people who built the structure; they likely created an acoustic environment unlike anything they normally experienced, new research hints.

"As they walk inside they would have perceived the sound environment around them had changed in some way,"said researcher Bruno Fazenda, a professor at the University of Salford in the United Kingdom. "They would have been stricken by it, they would say, 'This is different.'"

These Neolithic people might have felt as modern people do upon entering a cathedral, Fazenda told LiveScience.

Fazenda and colleagues have been studying the roughly 5,000-year-old-structure's acoustic properties. Their work at the Stonehenge site in Wiltshire, England, and at a concrete replica built as a memorial to soldiers in World War I in Maryhill, Wash., indicates Stonehenge had the sort of acoustics desirable in a lecture hall. [In Photos: A Walk Through Stonehenge]

Stonehenge itself is no longer complete, so Fazenda and colleagues used the replica in Maryhill as a stand-in for the original structure. At both locations, they generated sounds and recorded them from different positions to see how the structure influenced the behavior of the sound.