Harvey H. Hubbard
This brief survey is aimed at providing a background for various general phases of the aircraft-noise problem. Material has been drawn from National Advisory Committee for Aeronautics noise-research programs at the Langley Laboratory, from visits to various organizations which are concerned in some way with the aircraft-noise problem, and from a review of the literature. The effects of noise are discussed briefly as a background for the reader and brief discussions of the physical characteristics of aircraft noise and some ways of protection from noise are applying to the aircraft-noise problem.
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