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首页> 外文会议>International Congress on Sound and Vibration >RELATIONSHIP BETWEEN SOUND RADIATION FROM SOUND-INDUCED AND FORCE-EXCITED VIBRATION
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RELATIONSHIP BETWEEN SOUND RADIATION FROM SOUND-INDUCED AND FORCE-EXCITED VIBRATION

机译：声辐射与力激发和力激发振动之间的关系

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Sound radiation from solid structures is caused by sound-induced vibration as well as forceexcited vibration. The former is generally called airborne sound transmission. The insulation performance of airborne sound transmission is normally evaluated under the assumption that the source of the excitation force is random-incidence sound. On the other hand, the reduction of sound radiation from force-excited vibration is also a fundamental issue in architectural acoustics. Building facilities and floor impact sounds contribute to sound radiation from the surfaces in actual buildings. These two problems have been treated as different issues in architectural acoustics only because of different types of sources. In this paper, a fundamental relationship is elucidated through the use of a simple model, and a conversion function that relates the transmission coefficient for random incident sound and radiated sound power under point-force excitation is obtained in a simple closed form. This is composed of the specific impedance and the wavenumber, and is independent of any elastic plate parameters.
机译：来自固体结构的声音辐射是由声音引起的振动以及强制性振动引起的。前者通常被称为机载声音传输。通常在激发力的来源是随机发射声音的假设下进行空气传输的绝缘性能。另一方面，来自力激发振动的声辐射的减少也是建筑声学中的基本问题。建筑设施和地板冲击声有助于源于实际建筑物的表面。由于不同类型的来源，这两个问题已被视为建筑声学中的不同问题。在本文中，通过使用简单的模型阐明了基本关系，并且以简单的封闭形式获得了在点力激励下涉及随机入射声音和辐射声功率的转换函数。这由特定阻抗和波数组成，并且与任何弹性板参数无关。

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