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国外对矩形声源辐射的声压级的计算已进行过研究,但只是推导了沿矩形面声源上某一顶点垂线上各点的声压级计算公式.实际的声源形状往往是千变万化,声压级的计算点,也往往是任意要求的.本文试图推导出一个适用于在任意形状平面声源的声场中、任意点处的声压级计算公式.并由此导出几种特殊形状面声源的声压级随距离而衰减的通解的表达式.
The calculation of the sound pressure level of rectangular sound source radiation abroad has been studied, but only the formula for calculating the sound pressure level at each point along the vertical line of a vertex on the rectangular sound source is deduced. The actual sound source shape is often ever-changing , The calculation point of the sound pressure level is also often arbitrary.This paper attempts to derive a formula suitable for calculating the sound pressure level at any point in the sound field of a planar sound source of any shape and derive several special shapes Surface sound source sound pressure level with the attenuation of the general solution of the expression.