| 1. | Standard specification for reference specimen for sound transmission loss 声传输损耗的标样 |
| 2. | Test method for laboratory measurement of the sound transmission loss of door panels and door systems 门板和门系统声衰减的实验室测量方法 |
| 3. | The effects of the structure properties of the window upon the of sound transmission loss are also studied 同时,对双层窗结构本身性质对传声损失的影响也进行了研究。 |
| 4. | Standard test method for laboratory measurement of airborne sound transmission loss of building partitions and elements 实验室测量建筑物隔墙和构件的空气声音传输损失的标准试验方法 |
| 5. | Standard practices for mounting test specimens for sound transmission loss testing of naval and marine ship bulkhead treatment materials 海军和航海船舶舱壁处理材料的声传输损失试验用试样的安装 |
| 6. | Through testing on muffler on a certain motor , the paper evaluates the static performance of sound transmission loss of the muffler 通过对某种发动机使用的消声器进行测试,对消声器的静态传声损失性能作出评价。 |
| 7. | The effects of the double - glazing gap to sound transmission loss , including the quality of the gas in the gap and the distance of the gap , etc . are discussed 重点讨论了双层窗中间间隙对传声损失的影响,包括其中气体性质、夹层宽度等因素。 |
| 8. | The sound transmission loss versus the frequency is calculated by using the professional fem software ansys and the vibration - acoustics software sysnoise 同时,在专门的有限元分析软件ansys和专业的声学分析软件sysnoise上利用该模型求解了传声损失与频率的响应关系。 |
| 9. | Finally , this thesis compares the analysis results of single - glazing window and double - glazing window , draws a conclusion of the parameters of the window which effect of sound transmission loss , deduces the effects of structure parameters to sound transmission loss of the window . then , the optimization of the double - glazing window structure at the aim of maximum loss of sound transmission is carried out 最后,对上述单层窗、双层窗的分析结果进行分析比较,对传声损失的影响因子进行总结,推导出结构参数对传声损失的作用,利用优化理论和有限元理论进行基于最大传声损失的双层窗的结构优化设计,包括优化目标函数的提出,优化算法的选择和实现。 |