more accurate, but notespecially directed to this point, have verified the above generalstatement quite conclusively. The duration of audibility is nearly independent of the position ofthe source. — The observer remaining at the point marked 0 in the diagram of the large lecture-roomof the… … Fig. 3. Lecture-room, Jefferson PhysicalLaboratory: position of observer at 0;positions of air reservoir and organ pipe1-6. The efficiency of an absorbent inreducing the duration of the residualsound is, under ordinary circum-stances, nearly independent of itsposition. — Fifty meters of cretonne…
Architectural acoustics
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