e not theoretically cor-rect and the phenomenon is far from perfect. This failure of loud-ness and distinctness in most of the multiple reflection galleries arisesnot from any progressive loss in the many reflections, for the loss ofenergy in reflection is practically negligible. Indeed, given… … Fig, 9, Salle des Cariatides, the Louvre^ Parist 270 WHISPERING GALLERIES small dimensions, gather into the phenomenon very large portions ofthe emergent and of the focused whisper. In both St. John Lateranand La Salle-Echo, the condensing mirrors are cylindrical and gatherthe sound horizontally…
Architectural acoustics
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