|
|
Uncertainty Evaluation for the Measurement of Sound Absorbing Coefficient in Reverberation Room |
QIAN Zhong-chang1,2,FU Yun-xia1,YU Pei-ying1,DENG Zheng1,CHEN Wen-wang1 |
|
|
Abstract Based on the measurement of sound absorption coefficient in reverberation room, the source of the uncertainty of measurement result is identified. Uncertainty components are further analyzed, results showed that the measurement uncertainty of absorption coefficient is mainly introduced by measurement of reverberation time, the volume of reverberation room, size of specimen and velocity of sound measurement have little contribution to the uncertainty of sound absorption coefficient measurement. The uncertainty of reverberation time measurement depends on the diffusion degree of room sound field , the contribution of measuring device is small.
|
Received: 20 March 2015
Published: 31 May 2016
|
|
|
|
|
[1]张彦, 周心艳, 李旭祥. 发泡聚合物-无机物复合吸声材料的研究[J]. 噪声振动与控制, 1996, (3): 33-35.
[2]李海涛, 等. 多孔性吸声材料的研究进展[J].材料科学与工程学报, 2004, 22(6): 934-938.
[3]国家质量监督检验检疫总局. GB/T 18696.1—2004 声学 阻抗管中吸声系数和声阻抗的测量 第1部分: 驻波比法[S].2004.
[4]国家质量监督检验检疫总局. GB/T 18696.2—2002, 声学 阻抗管中吸声系数和声阻抗的测量 第2部分:传递函数法[S].2002.
[5]朱倍丽, 肖今新. 声管测量双水听器法中传递函数的研究[R]. 无锡:中国船舶科学研究中心,1991.
[6]庞业珍.基于传递函数的吸声隔声测量方法与应用研究[D]. 大连:大连理工大学, 2006.
[7]国家质量监督检验检疫总局.GB/T 20247—2006 , 声学 混响室吸声测量[S].2006.
[8]Lindsay R B. The Story of Acoustics [J]. Journal of the Acoustical Society of America, 1966, 39(4):629-644.
[9]ISO 3382—1997 Acoustics-Measurement of the Reverberation Time of Rooms with Reference to Other Acoustical Parameters[S].1997.
[10]Nelson E D, Fredman M L. Hadamard spectroscopy[J]. J Opt Soc Amer,1970, 60:1664-1669. |
|
|
|