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오진우(JinWoo Oh),이장현(JangHyun Lee),김학선(HakSun Kim),이정호(JungHo Lee),이수혁(SooHyuk Lee),김한샘(HanSam Kim) 한국소음진동공학회 2015 한국소음진동공학회 학술대회논문집 Vol.2015 No.10
Various absorber is used in the noise reduction equipments and acoustic construction site. Representative absorbers are Glass-wool and Poly-ester. Both of them has a high absorption coefficient. When the absorber is installed, absorber is needed finishing, perforated plate and film, to maintain the shape, prevent scatter and keep from water. These finishing layer cause shift of the absorption coefficient. Experiment was performed at acoustic facility(reverberant room) by referring KS I ISO 2805 standard.