Acoustic Transmission Characteristics of the Cylindrical Cavity with an Auxiliary Cavity and a Gap

In this paper, acoustic transmission characteristics are theoretically considered on a cylindrical cavity system. The cylindrical cavity system is a simplified model of the acoustic cavity of King Seongdeok Divine Bell and it consists of a main cavity, a gap and an auxiliary cavity, Under a point sound source in the main cavity, acoustic frequency response property is determined and acoustic modes are analysed. The results are compared with those by the boundary element analysis using SYSNOISE. Using the proposed theoretical method, the effect of the auxiliary cavity and the gap on the resonance frequency and sound transmission characteristics is identified. Finally the best combination of the auxiliary cavity and gap is determined for the maximum transmission of the source frequency.