Measurement of normal incidence airborne sound transmission loss for open‐plan office panels

1980 ◽  
Vol 67 (S1) ◽  
pp. S83-S83
Author(s):  
M. P. Webster
Keyword(s):  
Transmission Loss ◽  
Sound Transmission ◽  
Normal Incidence ◽  
Sound Transmission Loss ◽  
Airborne Sound ◽  
Open Plan

scholarly journals Effect of sound‐absorptive facings on partition airborne sound‐transmission loss

1977 ◽  
Vol 61 (S1) ◽  
pp. S33-S34
Author(s):  
Steven M. Brown ◽  
Joseph Niedzielski ◽  
G. Robert Spalding
Keyword(s):  
Transmission Loss ◽  
Sound Transmission ◽  
Sound Transmission Loss ◽  
Airborne Sound

An improved approach for normal-incidence sound transmission loss measurement using a four-microphone impedance tube

2020 ◽  
pp. 107754632092690
Author(s):  
Zechao Li ◽  
Sizhong Chen ◽  
Zhicheng Wu ◽  
Lin Yang
Keyword(s):  
Transfer Matrix ◽  
Sound Absorption ◽  
Transmission Loss ◽  
Sound Transmission ◽  
Normal Incidence ◽  
Sound Insulation ◽  
Sound Transmission Loss ◽  
The Common ◽  
Wavefield Decomposition ◽  
Insulation Performance

The main aim of this study is to introduce an improved method for determining the sound properties of acoustic materials which is more precise than the common wavefield decomposition method and simpler than the common transfer matrix method. In the first part of the article, a group of formulae for calculating sound transmission loss is represented by combining the wavefield decomposition and transfer matrix methods. Subsequently, a formula for calculating sound absorption coefficients is derived from these formulae by definition. Furthermore, the present formulae are validated by comparing the experimental results achieved with the present formulae and those results obtained by other methods recorded in published articles. Eventually, it is demonstrated that the method can accurately measure the sound insulation performance of materials and the sound absorption properties of limp and lightweight materials.

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