Analysis on Absorption Sound Acoustic Panels from Egg Tray with Corn Husk and Sugar Cane

In the contemporary world, one of the areas that have gained growing attention entails sound control. The motivation has been to respond to the increasing demand to improve sound waves in various contexts. One of the sound absorbing agents entails natural fiber, a platform that has led to the growing development of sound absorbers. Hence, this study’s central purpose is to examine the potentiality of sound absorber panels developed from materials such as egg trays with corn husks, egg trays with sugar cane, and egg trays combined. For the selected materials, two tests that are implemented include reverberation room test towards achieving noise reduction coefficients (NRCs) and the impedance tube test – towards achieving the sound absorption coefficients (SACs). For the impedance experiment, findings indicate that the frequency of the absorption values ranges from 0 Hz to 1000 Hz. For the respective forms of the acoustic panels, the SAC values are seen to be 0.9600, 0.9700, and 0.8900; findings that are achieved under low-frequency conditions. In relation to the case of NRC, the values obtained for the selected panels include 0.5500, 0.5900, and 0.5000. Indeed, the absorption aspect is seen to be pronounced when the experimental platform entails a combination of egg trays with sugar cane stacks. Regarding the results gained from the case of the reverberation room test, the echo time is likely to be shortened by the acoustic panel. Whereas the maximum time for the egg tray panel is observed to be 4.800 seconds, the case of an empty room depicts a maximum of 6.280 seconds. For the egg tray panels with corn skins and sugar cane, the results point to the maximum times of 3.990 seconds and 4.210 seconds respectively. Hence, it is concluded that the egg tray panel with corn husks depicts lower NRC values. Overall, it is evident that the three materials exhibit a promising state of eco-friendliness, complemented by the affirmation that in the market, they are easily available