Abstract

Science

April 1, 1915 issue

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Scholar W.C. Sabine publishes an account of a recent lecture to the Franklin Institute of great practical utility in architectural acoustics. It was based on an investigation of a lecture hail at Harvard University, in which an ordinary spoken word remained audible for about 5% seconds. At first the absorption was found only for a note of the pitch of violin C. but later extended for three octaves in either sense. By introducing more and more cushions into the room a curve was plotted connecting the quantity of absorbing material with the duration of the sound and this was proved to be approximately a rectangular hyperbola.

See Also:

ARCHITECTURAL acoustics; LECTURES & lecturing; SOUND; ACOUSTICAL engineering; BUILDINGS -- Environmental engineering; SCIENCE
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