Titlebook: Aero- and Hydro-Acoustics; IUTAM Symposium, Eco Geneviève Comte-Bellot,John E. Ffowcs Williams Conference proceedings 1986 Springer-Verlag

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Acoustic Pressure and Intensity Distributions in Finite Length Active Noise Control Systemsontours and maps of intensity vectors yields results which are in good accord with experimental findings. It appears that a reduction in the level of reflections in cancelling source location is acheived when a lining covers one wall in the duct. Suitable adjustment of the internal source impedances

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The Active Minimization of Harmonic Enclosed Sound Fieldsomplex strengths of a number of “secondary sources” of sound introduced into the enclosure. For a given number and location of secondary sources, there is a unique set of complex source strengths which minimises this potential energy. This analysis is applied to the case of a lightly damped enclosur

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Sound Generation in the Ocean Under a Turbulent Airflowor various features in the problem of sound generation in the ocean. Some particular situations are examined in detail. It is shown that, whenever the ocean surface is non-linearly deformed, any quadrupole radiations become negligible; the most significant sound arises from surface motions. This sur

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The Political Economy of the USSRlicit and exact analytical solution for a diffraction problem in linear wave theory, relating to a plane wave incident upon a thin opaque semi-infinite screen with a straight edge; afterwards, Macdonald, Herglotz and others derived the corresponding solution for a point source and a wedge formed by