some criti-cism that this lighting results in an unnatural silhouetting. 168 THEATRE ACOUSTICS So detailed an explanation of the diagrams and the purpose of theseveral parts is necessitated by the fact that it is as yet an unfamiliardevice in this country. It has been introduced recently in a… … Pig. 5. Interference system for tenor C in the Kuppel-Horizont,having a thirty-six foot proscenium opening. The intensityof sound is represented by contour lines, the maximum vari-ation being forty-seven fold. is proposed for the dramatic department of Harvard University, andit is reasonable to…
Architectural acoustics
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