The following sources were utilized for their content...
M. David Egan, "Concepts in Architectural Acoustics."
McGraw-Hill, New York, 1972.
Harold Burris-Meyer and Lewis S. Goodfriend, "Acoustics for the Architect."
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Emily Thompson, "The Soundscape of Modernity." MIT Press, Cambridge, Massachusetts. 2002.
Serway, Beichner. "Physics For Scientists and Engineers." Brooks/Cole, 2000.
http://www.whatisthematrix.com/ - for pictures of Keanu.