Research ArticleOpen accessIn the keywordsNoise Control Using Coconut Coir Fiber Sound Absorber with Porous Layer Backing and Perforated PanelRozli Zulkifli, Zulkarnain, Mohd Jailani Mohd NorAmerican Journal of Applied Sciences, Vol. 7, Issue 2 · 28 Feb 2010 · 14,698 accessesView PDFCite