An archaeological study of chirped echo from the Mayan pyramid of Kukulkan at Chichen Itza by David Lubman Acoustical Consultant This is a concise summary of a paper to be given at the October 12-16, 1998 meeting of the Acoustical Society of America in Norfolk, VA. Handclaps evoke chirped echoes from the staircases of the Pyramid of Kukulkan at Chichen Itza. The physics of the chirped echo can ...

MAYAN RUINS AND UNEXPLAINED ACOUSTICS Undocumented acoustical engineering at some of the Mayan ruins... by Wayne Van Kirk The Great Ballcourt The Great Ballcourt is 545 feet long and 225 feet wide overall. It has no vault, no discontinuity between the walls and is totally open to the sky. The Great Ballcourt has no curved surfaces. Each end has a raised temple area. A whisper from one end can be ...