Theater

http://www.sacramentoconventioncenter.com/venues/communityCenterTheater/specifications.cfm

http://www.elitehometheaterseating.com/layouts.html

http://californiapopsorchestra.com/Calvary%20Theater%20seating%20explanation.pdf

http://entertainment.howstuffworks.com/question494.htm

http://forums.cgarchitect.com/28888-theater-seating-slope.html

http://www.encyclopedia.com/topic/acoustics.aspx