Exploiting the laboratory measurement of sound transmission loss by the sound intensity technique

1987 ◽  
Vol 20 (3) ◽  
pp. 219-236 ◽  
Author(s):  
A. de Mey ◽  
R.W. Guy
Keyword(s):  
Transmission Loss ◽  
Sound Transmission ◽  
Sound Intensity ◽  
Laboratory Measurement ◽  
Sound Transmission Loss

Sound Transmission Loss of Thick Perforated Panels

2001 ◽  
Vol 8 (1) ◽  
pp. 41-56 ◽  
Author(s):  
K. T. Chen ◽  
S. H. Jan
Keyword(s):  
Theoretical Analysis ◽  
Critical Frequency ◽  
Transmission Loss ◽  
Sound Transmission ◽  
Sound Intensity ◽  
Sound Transmission Loss ◽  
Coincidence Effect ◽  
Maximum Discrepancy

A study is reported of the sound transmission loss of perforated panels. The study includes a theoretical analysis and measurement by means of sound intensity. The predicted transmission loss is similar to that measured above 630 Hz. The maximum discrepancy is less than 2 dB. The perforation in a thick panel is found to reduce the coincidence effect at the critical frequency.

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