COUPLING PROBLEMS AND ACTIVE CONTROL OF SOUND POWER MODE IN A DOUBLE-WALL CAVITY

This paper analytically and experimentally investigates the coupling problems and the active control of acoustic power mode in double-wall structure coupled with 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 caused in the enclosure. In the high frequency range, the acoustic sound transmitted through the double-wall structure is sufficiently reduced. Therefore, it becomes a broadband control system by applying active control that is more effective in the low frequency range.