摘要
根据半自由空间中脉动球源的波叠加理论,建立了高压输电线的噪声场三维计算模型,对多条输电线可听噪声进行了空间声场计算,得到了高压输电线周围空间任意点的可听噪声水平,给出了距离-高度平面与固定高度平面上的声场分布图。
According to the theory of wave acoustics and ray acoustics, the acoustic calculation formula of a line source in the semi-flee field is derived from the theory of wave superposition of a dilating sphere source. Bases on the method, the three-dimensional acoustic field distribution of the audible noise produced by the high voltage power line is calculated. Finally, the sound pressure level in any space placement is obtained, and the sound field distributing diagram is given in the plane of range-height and fixed height.
出处
《电声技术》
2009年第10期81-85,共5页
Audio Engineering
基金
国家自然科学基金(10774119)
关键词
半自由声场
线声源
高压输电线
可听噪声
semi-free acoustic field
line source
high voltage power line
audible noise
