匀加速运动声源的声场建模及其数值算法研究

针对匀加速运动点声源的声场特性与其运动状态密切相关这一问题,提出匀加速直线运动状态下点声源的声场计算方法。利用此方法建立了匀加速直线运动时点声源的声压模型,对模型中的关键参数声矢量R进行数值解析,并对声压进行数值分析仿真,得出匀加速直线运动时固定接收点的声压数值计算方法。用此方法对固定接收点位置的匀加速点声源声压进行声场建模,结果表明:在声源接近接收者一定距离以后,声压明显增大;在此距离之外,距离对声压的影响不大。

Acoustic modeling and numerical algorithms of uniformly accelerated motion of point sound source

s For the sound field characteristics of uniformly acceleration motion is closely related to its moving states, proposed a calculation method of sound pressure of uniformly accelerated point source,using this method to establish the sound pressure model of uniformly accelerated moving source ,performed numerical analysis on acoustic vector R and did numerical analysis simulation of sound pressure ,obtained a numerical calculation method of sound pressure of uniformly accelerated linear motion when receiving position is fixed, providing theoretical support for the future similar theory. Using this method for the modeling of sound pressure of uniformly accelerated point source with fixed receiving position ,the result shows that after a certain distance from the sound source close to the receiver the sound pressure increased significantly .in addition to the distance the distance has little infect on sound pressure.