Purwanto B, Aryantie MH, Zulfachmi Z, Aprishanty R. Low-Cost and Portable Sound Reduction Box: Innovation for Acoustic Material Performance Measurement. J. Eng. Technol. Sci. [Internet]. 2020Sep.30 [cited 2025Oct.20];52(5):732-44. Available from: https://journals.itb.ac.id/index.php/jets/article/view/12487