摘要
因现有的材料吸声系数测量方法无法对现场材料安装后的吸声系数进行测量,该文通过对现场吸声系数测量方法的研究,以反射法为基础,结合时选窗技术和波形消除技术,研制一套测量现场吸声系数的装置。使用研制的测量装置对样品进行测量,测量结果与驻波管测量结果等进行比较,验证所研制系统进行现场吸声系数快速测量的有效性。
The exiting Acoustical coefficients methods cannot be used to measure actual acoustic absorptivity after materials are installed on site. An on-site measuring device is developed on the basis of sound reflection method, along with time-selective window technology and wave elimination technology. This new device is used to test samples. It shows that this new device is more efficient compared to the laboratory test methods mentioned above.
出处
《中国测试》
CAS
北大核心
2016年第3期77-80,共4页
China Measurement & Test
关键词
吸声系数
现场测量
脉冲反射法
时选窗技术
sound absorption coefficient
field measurement
pulse reflection method
time-selective window technology
