摘要
测量声波幅度随传播距离变化的实验曲线,用波动学的观点分析实验数据,考虑到吸收和反射等耗散因素,计算出空气的吸收系数和换能器的反射系数.
The experimental curve of sound amplitude varied with the propagation distance is measured in the experiment. Considering dissipation factors such as absorption and reflection, this paper gets the absorption coefficient of the air and the reflectance of the transducer with the view of wave physics.
出处
《大学物理》
北大核心
2012年第4期60-62,共3页
College Physics
基金
国家基础科学人才培养基金项目(0204G088)资助
关键词
声波衰减
空气吸收
反射系数
acoustic attenuation
air absorption
reflectance
