@inproceedings{fada6db455fa48199440219dad74d645,
title = "Performance of parallel barriers inetgrated with Helmholtz resonator",
abstract = "Parallel barriers are widely adopted to control environmental noise, but their performance may be inferior to that of a single barrier owing to the formation of multiple reflection waves between the parallel barriers. To improve the performance of parallel barriers, Helmholtz resonators (HRs) are proposed to be mounted on the inner surface of the barrier. An acoustic interaction occurs between the HR and open cavity formed by the rigid ground and a pair of barriers, whereby the acoustic modal response within the open cavity is significantly suppressed and the diffraction wave at the barrier top edge is reduced. A semi-analytical model for dealing with acoustic coupling between the open cavity and HRs in a two-dimensional configuration is established in order to understand the sound suppression mechanism within the shadow zone. With the optimal position of a single HR, the insertion loss of about 10 dB around the target frequency can be controlled",
keywords = "Barrier, Environmental noise, Helmholtz resonator",
author = "Zhibo Wang and Choy, {Yat Sze}",
year = "2019",
month = jan,
day = "1",
language = "English",
series = "Proceedings of the 26th International Congress on Sound and Vibration, ICSV 2019",
publisher = "Canadian Acoustical Association",
booktitle = "Proceedings of the 26th International Congress on Sound and Vibration, ICSV 2019",
address = "Canada",
note = "26th International Congress on Sound and Vibration, ICSV 2019 ; Conference date: 07-07-2019 Through 11-07-2019",
}