Senarath, N. D. D. D.; Jayalath, J. A. C. P.; Mendis, D. R. A.
(Faculty of Science, University of Kelaniya Sri Lanka, 2023)
This study investigates the sound absorption coefficients (SAC) of structures developed using coconut shell powder, charcoal powder, and hair. Large amounts of coconut shells and human hair are readily available in Sri ...