匀速运动介质中的声波干涉  

Acoustic interference in uniform motion medium

作　　者：吕令杰 

机构地区：[1]山东师范大学物理与电子科学学院,山东济南250358

出　　处：《大学物理》2016年第2期52-55,共4页College Physics

摘　　要：探讨了由两个静止声源产生的声波在匀速运动的介质中的干涉,计算了两声源在同一时刻产生的两列等相位的波面分别到达某点的时间差,并与角频率相乘求得该点的相位差,进而得到了等相位差的点所满足的方程,最后讨论了几个特殊位置处的干涉情况及相关应用.In the paper, we discuss the interference of two sound waves engendered by static sound sources in the uniform motion medium, calculate the time distance of the equiphase waves simultaneously engendered by the two sound sources to a point. It is multiplied by the pulsatance to obtain the phase difference, then we get the equation of equiphase point. Finally, we discuss the interferences in several special positions and illustrate related applications.

关 键 词：声波干涉 运动介质 相位差 纵波 测速 

分 类 号：O422.5[理学—声学]