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A Study on Tunneling Effect in Sound Transmission Loss Measurement  

Kim, Bong-Ki (Samsung Advanced Institute of Technology (SAIT))
Kim, Jae-Seung (Korea Institute of Machinery Materials)
Kim, Hyun-Sil (Korea Institute of Machinery Materials)
Kang, Hyun-Ju (Korea Institute of Machinery Materials)
Kim, Sang-Ryul (Korea Institute of Machinery Materials)
Publication Information
The Journal of the Acoustical Society of Korea / v.23, no.1E, 2004 , pp. 24-30 More about this Journal
Abstract
This study is aimed to evaluate a tunneling effect in the laboratory measurement of sound transmission loss. Based on the formulation for sound transmission loss of a finite panel in the presence of tunnel, variations of the sound transmission loss with the parameters of panel location and tunnel depth are investigated. In comparison with the transmission loss of a finite plate in an infinite rigid baffle, the maximum difference occurs in the laboratory measurement when the panel is placed at the center of the tunnel, while a better estimation of true transmission loss is obtained when the panel is located at either end.
Keywords
Sound transmission loss; Tunneling effect;
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