摘要
本文对在充水管道中加入声分隔片的消声结构的消声性能进行了理论研究，用模式匹配法计 算了有限长度声分隔片的传递损失和功率反射系数．研究结果表明，声分隔片的消声效果优于通常 所采用在管壁加吸声衬层的结构，并且其功率反射系数很小．
An acoustical splitter used for noise reduction in a water-filled channel is theoretically studied. The multisectioned duct theory is generalized to consider the case of splitter of finite length in the duct. And from this theory, the transmission loss and the reflection coefficient of sound power are obtained. It is shown that an improvement of sound attenuation in a duct can be achieved by inserting the splitter compared with the scheme then a sound absorbing rubber is used as an acoustical liner. In addition the power reflection coefficient of the splitters is found to be very small.
出处
《应用声学》
CSCD
北大核心
1999年第1期15-20,共6页
Journal of Applied Acoustics
