A review on natural and waste material composite as acoustic material

Escalation in noise pollution due to urbanization and industrial development needs to be control by effective way. Different synthetic material shows excellent acoustic performance though synthetic material needs to be dealt with its high cost and environment harmful effect. This review highlights properties of natural fibers and waste (recyclable) material composite as acoustic material and significant parameters which affect acoustic performance. The natural material is an efficient alternative to this synthetic material due to their low cost and less environment effect. Waste material present in environment like rubber tire crumb, wooden scrap can be used in acoustic application. Also this paper emphasis on current research on different natural fiber materials are like jute, kenaf fibers, kapok fibers, arenga pinnata, coconut coir, sugarcane fiber, corn husk and their acoustic performance. It can be observed that latent qualities of these natural materials can be effectively used for acoustic application. •The sound absorption mechanism.•Different sound absorbing materials with their sound absorption characteristics (compared with synthetic materials).•Different material properties along with experimental parameters which affects the acoustic performance.•Testing standards.