蒙特卡洛法在混响时间测量不确定度评定中的应用  

Application of Monte Carlo method in measurement uncertainty evaluation of reverberation time

作　　者：蒲志强[1] 孙磊[1] 万正军 鄂治群[1] 桂桂[1] PU Zhiqiang;SUN Lei;WAN Zhengjun;E Zhiqun;GUI Gui(National Institute of Measurement and Testing Technology,Chengdu 610021,China)

机构地区：[1]中国测试技术研究院,四川成都610021

出　　处：《中国测试》2020年第11期16-19,共4页China Measurement & Test

基　　金：中国石油科技创新基金项目(2015D-5006-0607)。

摘　　要：针对当前相关校准规范中混响时间测量不确定度评定示例存在的不足,依据蒙特卡洛法(MCM)基本分析方法和混响时间测量实际模型,应用MCM规范地评定混响时间测量的不确定度。在结合和分析具体测量实例的基础上,详细描述MCM评定的条件、过程和结果。通过方法对比讨论JJF1142—2006《建筑声学分析仪校准规范》原有评定示例存在不足的原因,提出完善建议,并强调两种评定方法的选取原则。作为MCM在声学校准领域的典型应用和推广具有一定的参考意义。To solve insufficiency of measurement uncertainty evaluation of reverberation time illustrated in related calibration specification,this article shows a normative evaluation of measurement uncertainty for reverberation time by Monte Carlo method(MCM)based on its principle and practical measurement model.Meanwhile,it also presents the condition,procedure and result of MCM in detail by combining with and discussing on an actual measurement.By comparing the two methods,insufficiency of the evaluation demonstrated in JJF1142—2006 has been discussed and improving suggestions have been proposed.The selecting rules of the two methods in evaluation have also been emphasized.As a typical application and promotion of MCM in acoustics calibration,it is of certain reference significance.

关 键 词：计量学 不确定度 蒙特卡洛法 混响时间 

分 类 号：TB95[一般工业技术—计量学]