摘要
针对目前对声学材料隔声量测量的方法不便于实验室研究的现状,采用四传感器隔声量测量法,以阻抗管为测试平台,构建了新型的隔声量测量系统;该系统通过B&K公司的Pulse系统提供测量所需的声源,并采集4路传声器所测得的实验值;通过自编的隔声量计算软件计算出测试样品的隔声量;实验结果表明,该测量系统操作简单,测量准确,利于今后的实验室声学材料的隔声量的测量。
A new sound transmission measuring system based on four--microphone method is developed.It can improve the situation that it is not convenient to measure sound transmission of acoustic materials in the lab, As impedance tube is the testing platform, this system uses Pulse system made by B＆K Company to supply the sound source and gets the experimental data from 4 microphones. The computing software gets the sound transmission of the testing material. It is proved through experiment that it is convenient, accurate and useful to measure the sound transmission of acoustic materials on this measuring system in the lab.
出处
《计算机测量与控制》
CSCD
2008年第7期909-910,913,共3页
Computer Measurement &Control
关键词
隔声量
复声压
阻抗管
传声器
sound transmission
complex sound pressure
impedance tube
microphone
