A team of researchers from the University of Salford in the United Kingdom revealed how the voices would have sounded 4,000 years ago inside the Stonehenge monument. The group made a recording of their efforts and published the results on SoundCloud.
Stonehenge is, of course, a monument built about 5,000 years ago by Neolithic people for unknown reasons: they did not leave written records. In modern times, the monument has become famous throughout the world and attracts hundreds of thousands of tourists every year. The researchers explored how a human voice would have sounded inside the monument during its apogee. To find out, they applied a modern technique that has been used to help architects build concert halls with optimal sound characteristics. The technique involves building a small-scale model of a building before construction and blasting sounds at it at 12 times its normal frequency in a sound chamber to overcome the differences in size.
To replicate the Stonehenge technique, the researchers printed each of the stones in 3D and used them to make silicone molds that were then filled with a mixture of plaster polymer. Each of the stones was painted and then placed in its original position inside the monument. The result was a 1:12 scale model of the original monument: the highest model stone was only 60 centimeters tall.
Next, the team subjected the model to sound tests in a sound chamber, producing a sound profile for the monument. Then they applied the sound profile to the recorded voice of a team member. Researchers say that the voice on the recording sounds as if it was the team member who had stood in the center of the monument while talking so many years ago. They point out that despite the large spaces between the stones, a person's voice would have echoed around the monument, producing an echo effect. They also suggest that the people who built the monument are not likely to know what impact it would have on a speaker's voice, but they note that it seems likely that they would have taken advantage of the impressive acoustics.
Teacher @trevor_cox since @SalfordAcoustic The Research Center recreated sounds of the #Stone age as sounds went through a 1:12 scale model of #Stars of stone, to determine how the sound would have transported through all its stones at 2200 a. https://t.co/x0oCW1NH9m
– Salford Uni News (@SalfordUniNews) July 11, 2019
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The minimodelo of Stonehenge reveals how the voices would have been carried in the old original monument (2019, July 12)
recovered on July 12, 2019
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