摘要
本文对传统的水声无源材料透声性能测量技术提出了几点改进，以便在小型消声水池中测量有限尺寸的大面积材料的插入损失（透射系数）随频率的变化规律。材料样品的典型尺寸为 １×１ｍ２左右，测量频率范围为 ２－２０ ｋＨｚ．文中对标准样品进行了声学性能测量，测量结果和平面波理论模型计算值有较好的吻合。
The conventional technique for measuring of transmission properties of underwater acoustic passive materials is improved to measure insertion loss(transmission coefficient) of large materials of definite size as the function of frequencies in a small-sized anechoic tank. The typical size of sample is about 1×lm2, and the range of measuring frequency is 2-20kHz. The properties of a standard sample have been measured, and the results are in good agreement with the values calculated according to the plane-wave model.
出处
《应用声学》
CSCD
北大核心
1999年第6期24-28,共5页
Journal of Applied Acoustics
关键词
水声材料
声学测量
信号处理
透声性能
Underwater acoustic materials, Insertion loss, Acoustic measurement, Signal processing
