Historical Acoustics Acoustics, Ultrasound and Vibration Technology

David Lubman of the Acoustical Society of America argues that the echo sounds like the primary call of the Mayan sacred bird, the Quetzal.

• Moving Beyond Prophecies & Predictions - Book by Cynthia Gage. (Atlantis Rising)
• The Sound of a Voice - Mike Penney’s page devoted to Victorian sound recording acoustics, ultrasound and historical acoustics vibration and telephony.
• Chirped Echo from the Mayan Pyramid of Kukulkan at Chichen Itza - David Lubman of the Acoustical Society of America historical acoustics argues technology that the echo sounds like the primary historical acoustics call of technology the Mayan sacred bird, the Quetzal.
• Rock Art Acoustics - Steven. J. Waller's Home Page
• John William Strutt (Lord Rayleigh) - Biography of Lord Rayleigh, 1842-1919, with information on historical acoustics his acoustics, ultrasound and vibration scientific research on a range of topics historical acoustics including travelling acoustics, ultrasound and vibration waves where his theory has now historical acoustics developed into the acoustics, ultrasound and vibration theory of solitons.

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