水中オルガンパイプの放射音場

概要

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An ensemble of monopoles can approximately describe the radiation field of underwater organ pipes in low frequencies. Two extreme monopoles represent the mouth and the end opening respectively. Each of middle ones represents a pipe segment of half-wavelength. Phase difference and strength ratio between a middle monopole and an extreme one are theoretically considered. Experiment on the radiation field pattern of first mode confirms theory on it based on the above monopole approximation. Radiation field largely depends on pipe material because its distensibility governs the radiative strength of pipe wall.
社団法人日本音響学会の論文