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Description
In the context of circular economy and the growing need to mitigate noise pollution and reduce textile waste, recycled textile materials have emerged as viable alternative to conventional acoustic panels. Despite increasing research interest, studies on textile-based acoustic panels remain at an early stage, and a systematic comparision of sound absorption coefficient (SAC) values across different textile waste types is still lacking. This study aims to provide a comparative analysis of SAC values in textile-based acoustic panels based on existing research data. The analysis identified wool, cotton, polyester, flax, viscose and other fibers as the most frequently utilized materials. The findings indicate that SAC performance is strongly influenced by fiber porosity, tortuosity, material composition, as well as by panel thickness and density. Withing the frequency range of 500-5000 Hz, wool and viscosed-based panels demonstrated superior acoustic performance, achieving SAC values of up to 0.9. In contrast, recycled denim, flax and polyester exhibited moderate sound absorption, with SAC values of 0.53, 0.42 and 0.38, respectively, while 100% cotton panels generally showed lower efficiency. Although existing literature highlights the potential of various textile wastes, further reseaerch is required to enhance SAC performance, particularly in the low-frequency ranges.