摘要
声速测量是根据入射波和反射波叠加后的状态随反射界面到声源的距离的不同而呈现出周期性变化这一特点进行测量的 ,由于实际的情况比理想的情况复杂得多 ,且两波叠加后的物理图像较抽象 ,使得波在界面上的反射理论常常容易出现错误的观点 为此 ,本文在忽略媒质对声波吸收的情况下 ,推出两波叠加后的方程 ,得到简单清晰的物理图象 。
The sound measurement is conventionally carried out according to the features that the phases of overlapping waves of incoming sound and reflecting sound vary periodically with the distance between the reflecting interface and the sound source .There are some wrong ideas about the theorem of wave reflecting on interface because of far more sophisticated cases in reality and more abstract physical image of the overlapping mentioned above. In this work, by ignoring the media's absorption of sound, an equation about the overlapped wave has been deduced and a simple and clear physical image obtained. Based on these results, the theorem underlying the measurement has been elaborated.
出处
《华南师范大学学报（自然科学版）》
CAS
2002年第1期104-107,共4页
Journal of South China Normal University(Natural Science Edition)
