日本音響学会誌
Online ISSN : 2432-2040
Print ISSN : 0369-4232
有限長剛円柱による球面波の反射
三井田 惇郎浮貝 雅裕
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1980 年 36 巻 4 号 p. 194-198

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In this paper, an analytical technique for calculating the amplitude of reflected sound waves from a cylindrical target of finite length is treated. Both sound source and receiving point are assumed to be located at the same position, apart far from the target. The approximate formulas for the reflectivity are derived under certain geometrical restrictions. The reflectivity is termed as the "directional sound reflectivity of the cylindrical target", which is defined as the ratio of the sound pressure of the reflected wave from a target to a certain pressure which is to be calculated based on the theory of geometrical optics. To verify the validity of the approach, some experiments were performed in air at the frequency of 39. 00 kHz. The results qualitatively agree with the calculated ones by the present method. This confirms the usefulness of the present technique to calculate the reflection of sound waves from a cylindrical target.

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© 1980 一般社団法人 日本音響学会
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