131 音響透過損失測定における試料サイズの影響の解析(オーガナイズドセッション : O.S.5 音響・振動の計測と可視化技術I)

概要

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The purpose of this study is to measure sound transmission loss (TL) of sound insulation materials practically with small size samples. We investigated the effect of sample size on TL experimentally using sound intensity method. That showed TL measured with small sample (size ; a×a) agreed with TL measured with large sample more than the frequency f=C/2a (C ; sound speed) for some materials. However, it is not certain that the results are generally right for every material. This paper describes the results that normal incident TL of rectangular panel simply supported in an infinite baffle was calculated. We investigate the effects of sample size, in two factors of nonresonance transmission and resonance transmission.
社団法人日本機械学会の論文
2001-06-05