ABDUL AZIZ, MUHAMMAD AFHAM, and Kamarul Aini Mohd Sari. “Comparison of Sound Absorption Coefficient for Natural Fiber”. Progress in Engineering Application and Technology 2, no. 1 (June 16, 2021): 157–163. Accessed April 9, 2026. https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/710.