Vetiver grass (Chrysopogon zizanioides)-based porous pine board material of lower thickness and density has been designed using magnesium oxide (MgO) as a binding agent. This pine board can be utilized in the new constructions and existing buildings for noise absorption. Attempts were made to optimize low density 400 kg/m³ and 20-mm-thick material. The sound absorption measurement of these manufactured pine boards has been taken in the reverberation chamber for sound absorption coefficient (SAC) and noise reduction coefficient (NRC) as per International standard ISO 354-2003 and ASTM 423-90. Efforts have been made to observe the variation in SAC and NRC when the glass wool layer was inserted below the developed material. NRC of the developed material was found 0.33 and 0.80 without and with a glass wool layer inserted below the specimen at rigid backing. Further, the sample’s SAC and NRC measurements were examined by creating different air cavities behind the developed pinewood sample, starting from rigid backing (0 mm) to 25 mm, 50 mm, 100 mm and 300 mm to get the best combination for improving noise absorption acoustic properties of the material. An attempt has been made to counter the low-frequency noise; outcome results have been analysed and discussed in the present work. The manufactured pine boards of density 400 kg/m³ and 20 mm thickness satisfied all the physical and mechanical properties requirements of the Indian Standards.

使用氧化镁 (MgO) 作为粘合剂，设计了较低厚度和密度的基于香根草 ( Chrysopogon zizanioides)的多孔松木板材料。这种松木板可用于新建筑和现有建筑中用于吸音。尝试优化低密度 400 kg/m ³和 20 毫米厚的材料。根据国际标准 ISO 354-2003 和 ASTM 423-90，这些制造的松木板的吸声测量已在混响室中进行吸声系数 (SAC) 和降噪系数 (NRC)。当玻璃棉层插入显影材料下方时，已努力观察 SAC 和 NRC 的变化。发现开发材料的 NRC 分别为 0.33 和 0.80，没有和有玻璃棉层插入样品下方的刚性背衬。此外，通过在开发的松木样品后面创建不同的气腔来检查样品的 SAC 和 NRC 测量值，从刚性背衬 (0 mm) 到 25 mm、50 mm、100 mm 和 300 mm，以获得改善噪音吸收的最佳组合材料的声学特性。已尝试对抗低频噪声；在目前的工作中对结果结果进行了分析和讨论。制造密度为 400 kg/m 的松木板³和 20 毫米厚度满足印度标准的所有物理和机械性能要求。