ON THE ACCURACY OF SOUND PRESSURE LEVEL MEASUREMENTS IN ROOMS

被引：3

作者：

CRAIK, RJM

机构：

[1] Department of Building, Heriot-Watt University, Riccarton, Edinburgh

来源：

APPLIED ACOUSTICS | 1990年 / 29卷 / 01期

关键词：

D O I：

10.1016/0003-682X(90)90069-7

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

When measurements are made of the average sound pressure level in a room there will be an error because of the finite number of positions at which measurements are taken. However, if the standard deviation of the readings and the number of samples are known then an estimate of the accuracy can be made. It is shown that the standard deviation can be predicted with both bandlimited and broadband excitation. It is also shown that for many practical situations it can be assumed that the probability distribution of the dB readings is normal, and that this greatly simplifies the calculation of confidence intervals. © 1990.

引用

页码：25 / 33

页数：9

共 9 条

[1]

BS2846 (Parts 1 and 2) Guide to statistical interpretation of data, (1975)

[2]

Lubman, Precision of reverberant sound power measurements, J. Acoust. Soc. Am., 56, pp. 523-533, (1974)

[3]

Lubman, Spacial averaging in sound power measurements, J. Sound Vib., 16, pp. 43-58, (1971)

[4]

Bodlund, Statistical characteristics of some standard reverberant sound field measurements, J. Sound Vib., 45, pp. 539-557, (1976)

[5]

Lubman, Fluctuations of sound with position in a reverberant room, The Journal of the Acoustical Society of America, 44, pp. 1491-1502, (1968)

[6]

Schroeder, Frequency and space averaging on the transmission response of multimode media, The Journal of the Acoustical Society of America, 46, pp. 277-283, (1969)

[7]

Green, Margerison, Statistical treatment of experimental data, (1977)

[8]

McLaughlin, Temporal and spacial variations of noise levels in rooms, MSc thesis, (1983)

[9]

Welsh, The generalisation of ‘Students’ problem when several population variances are involved, Biometrika, 34, pp. 28-35, (1947)

← 1 →