Abstract:
Sound absorbing materials play an important role in various fields like automobiles, conference halls, industries and many more. Synthetic fibers acoustic materials came in existence around 1970 due to public health concerns of the asbestos-based material. Now, these synthetic materials are required to be replaced by natural fiber-based materials due to their sustainability issues. In this research paper the acoustic impedance of various natural fiber pads has a been analyzed with the help of an impedance tube. It is a compact measuring apparatus to determine the acoustic impedance for a wide frequency range. The results show that the acoustic impedance of various natural fiber pads is found to be comparable with synthetic materials. Also the acoustic property of these materials is almost same in some range of frequencies with slight variations.
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