Both household garbage and noise pollution are urgent challenges to modern society. This paper presents a straight-forward avenue for the utilization of natural waste green tea residues as sound absorption materials. Sound absorbers made of tea residues with 1 cm, 2 cm, and 3 cm thickness were prepared, thus to study the effects of thickness on sound absorption. In addition, tea residues layer is featured backing the woven fabric layer to fabricate multilayer sound absorber and improve the absorption properties. This work has demonstrated that waste green tea residues are especially attractive to be used as sound absorber. It is also feasible to achieve required sound absorption by adjusting tea residues thickness and combination structures with different facing fabrics.

家庭垃圾和噪声污染都是现代社会的紧迫挑战。本文提出了一条利用天然废绿茶渣作为吸声材料的简单途径。准备了由厚度为1 cm，2 cm和3 cm的茶渣制成的吸声器，从而研究了厚度对吸声的影响。另外，茶渣层的特征在于支持织物层，以制造多层吸声器并改善吸收性能。这项工作表明，废绿茶残留物特别适合用作吸音剂。通过调整茶渣的厚度和不同面料的组合结构来达到所需的吸音效果也是可行的。