Abstract
This paper considers an analytical and experimental investigation into the coupling problems and the active controls of acoustic power mode in the double-wall structure coupled to an acoustic enclosure. Harmonic sound plane wave from outward is transmitted into the enclosure. The purpose of this investigation is to control the potential energy in the enclosure. In the high frequency range, the acoustic sound transmitted through the double-wall structure is very low. It becomes a broadband control system by applying active control that is more effective in the low frequency range to the double-wall cavity.
