Rating of Sound Absorption for EFBMF Acoustic Panels according to ISO 11654:1997Emedya Murniwaty Samsudin, Lokman Hakim Ismail, Aeslina Abd Kadir, Ida Norfaslia Nasidi and Noor Sahidah SamsudinMATEC Web of Conferences, 150 (2018) 03002DOI: https://doi.org/10.1051/matecconf/201815003002