摘要
本文从平面活塞运动的发声机理出发，研究了次声发生机理，建立了次声场的数学模型；并在此基础上，研制出一种频率、幅度均可调的次声发生装置。通过实验验证了理论模型的正确性，并分析了次声的频率、活塞的振幅、活塞的面积及空间点到声源距离与次声的声压级之间的关系。
In this paper, the mechanism of infrasonic radiation is studied and mathematical model of infrasonic field is established based on plane piston radiation mechanism. The infrasonic radiation equipment, which can adjust the frequency and amplitude of infrasound, is developed. Moreover, the theoretical results are veritied by the experiments. The relation among the sound pressure level and infrasonic frequency, piston amplitude, piston area, and distance from infrasonic source to space are discussed.
出处
《声学技术》
CSCD
1999年第1期39-41,共3页
Technical Acoustics
基金
国家"95"攀登计划项目
关键词
活塞发声
次声机理
次声特性
次声发生装置
piston infrasonic radiation, infrasonic mechanism, infrasonic characteristics
