Abstract
Vehicle interior noise can spoil passenger's comfortableness. Especially it is difficult to reduce low frequency noise such as booming noise. So the purpose of this research is to reduce vehicle interior booming noise using panel based resonator. Panel based resonator is composed of honeycomb core and perforated plate. Each cell of panel based resonator is made to specification according to the same resonant frequency of corresponding Helmholtz resonator. Resonant frequency varies with cross area of holes. Panel based resonator reduces noise most effectively when it is made to specification according to the frequency where SPL (sound pressure level) is the highest.
