HELMHOLTZ RESONATOR AND METHOD FOR MANUFACTURING SMALL-SIZED HELMHOLTZ RESONATOR

摘要

According to one embodiment of the present invention, a Helmholtz resonator has an area where a spatially compressed acoustic metamaterial is filled in a predetermined position, and the down-sized Helmholtz resonator in accordance with arrangement of a filling area inside the Helmholtz resonator and a physical property of the filling area can have an adjustable resonant frequency based on the arrangement and the physical property.