材料降噪特性测试装置的研制与实验  

Development and Experiment of Testing Equipment for Noise Reduction Characteristics of Materials

作　　者：林春丹[1] 李秋真 黄欣鹏 邵长金[1] 周广刚[1] 张万松[1] 邢颖 LIN Chundan;LI Qiuzhen;HUANG Xinpeng;SHAO Changjin;ZHOU Guanggang;ZHANG Wansong;XING Ying(College of Science,College of Information Science and Engineering,China University of Petroleum(Beijing),Beijing 102249,China;College of New Energy and Materials,College of Information Science and Engineering,China University of Petroleum(Beijing),Beijing 102249,China;不详)

机构地区：[1]中国石油大学(北京)理学院,北京102249 [2]中国石油大学(北京)新能源与材料学院,北京102249 [3]中国石油大学(北京)信息科学与工程学院,北京102249

出　　处：《信阳师范学院学报（自然科学版）》2020年第2期286-291,共6页Journal of Xinyang Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(11974430);中国石油大学(北京)本科教学工程改革项目(21G16027)。

摘　　要：借助Audition软件生成白噪声,通过Matlab编程得到简易的声谱仪,自制了基于计算机的材料隔音及吸声特性的测试装置.在此基础上,实验研究了木板、水泥板、玻璃、金属板、泡沫板等9种常见家装材料的透射和反射降噪特性,并分析了材料厚度、声波入射角对降噪性能的影响.结果表明,该测试装置能够表征材料的降噪特性,具有成本低、灵活性高的特点,弥补了现有材料降噪特性测试装置的不足.White noise was generated by Adobe Audition on the computer,and a simple spectrograph was simulated by programming with Matlab,and a computer based testing device for noise insulation and absorption characteristics of materials was made.On this basis,the transmission and reflection noise reduction characteristics of nine common home decoration materials,such as wood board,cement board,glass,metal plate and foam board,as well as the influence of the thickness of samples and the incidence angle of sonic wave on noise reduction performance,were studied experimentally.The experiment shows that the test device can characterize the noise reduction characteristics of materials with low cost and high flexibility,which make up for the deficiency of the existing materials noise reduction characteristic testing device.

关 键 词：降噪 透射 反射 厚度 角度 

分 类 号：O4[理学—物理]