Sound Transmission Control of a Cylindrical Structure Using Acoustic Resonators
This paper presents a passive method to control low-frequency noise in a cylindrical structure by using multi-modal T-shaped acoustic resonators. The feasibility of noise transmission control on the cylindrical structure is investigated, including a detailed experimental evaluation of the control performance using a single resonator and a resonator array consisted of different resonators. Finally, six long T-shaped acoustic resonators are used to target the first four lowest cylindrical cavity resonances, and up to 9 dB noise reduction is achieved, and broadband improvement of noise reduction is also observed.
Chunliang Zhang and Paul P. Lin
D. Y. Li and L. J. Ou, "Sound Transmission Control of a Cylindrical Structure Using Acoustic Resonators", Applied Mechanics and Materials, Vols. 226-228, pp. 203-209, 2012