Research of Sound Field Properties For Suspension Absorbing Materials Used in Tunnel

• Main Authors: Bo-Zhi Huang, 黃柏智
• Other Authors: Der-Yuan Liou
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/16856066372638736864

碩士 === 國立臺灣海洋大學 === 系統工程暨造船學系 === 100 === This thesis is to study absorption characteristics of suspension sound absorbing material and how to define its sound absorbing area, as well as the sound field effect in tunnel sound field. The research is based on experimental results import to acoustic simulation software EASE. To confirm the feasibility of EASE simulation and experimental then establish tunnel model. Finally we can confer the pros and cons between adding suspension sound absorbing material between and after to the tunnel sound field. Characteristics of suspension sound absorbing material tests are mainly wondering the impact of furnishings spacing. we find out the changes of reverberation time and sound pressure level by changing the sound absorbing material spacing. And also change the type and configured of sound absorbing material so that the suspension sound absorbing materials have a more comprehensive understanding. Then we select some experimental group import to EASE, and analyze of the error between the simulation results and experimental tests. The final goal is to establish tunnel model and analyze the model of architectural acoustic field characteristic. Provide some experience to the study of related architecture sound field.