摘要
采用双传声器传递函数法,运用NI声振信号采集系统及LabVIEW软件,完成了材料法向吸声系数测量软硬件系统的研制,实现了测量管道设计、信号采集系统确定及分析程序的开发工作,应用本系统对海绵吸声材料样品进行了实验测量,验证了系统的有效性。
According to the method of two-microphone transfer function,the measurement system of the material normal absorption coefficient is developed based on the NI signal acquisition system and LabVIEW software.The design of the measuring duct,decision of signal acquisition system and development of the analysis software are accomplished.The sound absorption material of sponge is used to validate the result from the experimental measurement,which is confirmed that the experimental result coincides basically with the one from the traditional method.
出处
《测控技术》
CSCD
北大核心
2010年第10期32-34,37,共4页
Measurement & Control Technology
基金
北京市教委科技发展面上资助项目(KM200710011008
KM201010011008)
