Fig. 23. Photograph of Two of the Canvas Curtains in the Dome of the Auditorium. Note also the Absorbing Materials under the Arches.
Fig. 24. Photograph of Dome of Auditorium Showing the Canvases Installed to Eliminate Echoes.
V. Bibliography of Publications on Acoustics of Auditoriums.
Auerbach, F. “Akustik.” Winkelmann’s Handbuch der Physik, Vol. II, 1909. An encyclopædia of acoustics, the following topics applying to the subject in hand: “Akustik der Gebäude,” pp. 580–584, with references. “Nachhall und Echo,” pp. 565–569, with references.
Blackall, C. H. “Acoustics of Audience Halls,” Engineering Record, Vol. 45, pp. 541–542, 1902. A paper recording the opinions of the author with many references to acoustical properties of particular audience halls.
Cornelison, R. W. “The Acoustical Properties of Rooms Particularly as Affected by Wall Coverings,” 1905. A pamphlet describing the merits of “Fabrikona” burlap as a sound absorber. H. B. Wiggin’s Sons Company, Bloomfield, N. J.
Eichhorn, A. “Die Akustik Grosser Raüme nach Altgriechischer Theorie.” Ernst and Korn, Publishers, Berlin, 1888. A discussion of Greek buildings and acoustics, with applications to modern conditions.
Eichhorn, A. “Der Akustische Masstab für die Projectbearbeitung Grosser Innen Raüme.” Published by Schuster and Bufleb, Berlin, 1899. A continuation of the previous work.