Jayawardana, D.G.D.D.,; Ranaweera, A.L.A.K.; Kalingamudali, S.R.D.
(Faculty of Science, University of Kelaniya, Sri Lanka, 2020)
This study focuses on designing and characterization of a parametric speaker. It is used to convert sound waves that spread out in all directions emitted from a sound source into a narrow sound beam to reduce noise pollution. ...