基于改进中断声源法的混响时间测量方法研究  

Research on reverberation time measurement based on the interrupted noise method

作　　者：鄂治群[1] 蒲志强[1] 孙磊[1] 桂桂[1] 尹永钊 E Zhiqun;PU Zhiqiang;SUN Lei;GUI Gui;YIN Yongzhao(National Institute of Measurement and Testing Techology,Chengdu 610021,China)

机构地区：[1]中国测试技术研究院,四川成都610021

出　　处：《中国计量大学学报》2022年第4期461-465,共5页Journal of China University of Metrology

摘　　要：目的:应用反向积分法,改善应用中断声源法测量混响时间的精度。方法:从时间计权参数设置、声源信号类型两个方面对这种情况产生的原因进行了研究。提出基于中断声源法的测量数据反向积分法拟合。结果:该方法有效避免了由时间常数和积分时间设置、声源信号类型对测量结果准确度的影响,降低了测量的不确定性,减少重复测量的次数。结论:此方法有效地提高混响时间的测量效率和估值精度。Aims:The inverse integral method was used to improve the accuracy of reverberation time measurement by using the interrupted noise method.Methods:By studying the weight parameter of the time meter and the signal type of the sound source,we proposed the inverse integration method based on the interrupted noise source method.Results:The proposed method could effectively avoid the influence of time constant,integral time and signal type of sound source on the measurement results,reduce the uncertainty of measurement,and also reduce the time of repeated measurement.Conclusions:This method can effectively improve the measurement efficiency and estimation accuracy of reverberation time.

关 键 词：声学计量 混响时间 反向积分 中断声源法 建筑声学 

分 类 号：TB95[一般工业技术—计量学]