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Early rock

Early rock
trefwoorden: Late steentijd - akoestiek - grafheuvels
Were some ancient sites designed to be acoustically, as well as visually, awe-inspiring?
Ongoing research at Neolithic sites around the UK has revealed striking similarities in their acoustical properties. Key examples, both in Ireland, are the huge passage tomb of Newgrange and the burial mound known as Cairn L at Loughcrew.
These sites contain passageways leading to large circular chambers, and have a resonant frequency (at which sounds naturally echo and reverberate) of about 110hz - the frequency of the male baritone, the second lowest singing voice.

Lees verder bij: The Guardian (6 november 2003)