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Sound insulation of plenum windows installed with rigid cylinder array

Li, Xiaolong; Tang, Shiu Keung

Authors

Xiaolong Li



Abstract

In this study, a 1:4 scale down model was established to investigate the acoustical performance of plenum window installed with a rigid cylinder array. A total of 6 rigid cylinders were vertically placed as a 2x3 array inside the central cavity of a plenum window. A linear loudspeaker array consisted of twenty-five 6 inch loudspeakers was used as the sound source. Results show that the placement of rigid cylinder array has an effect on the sound insulation of the plenum window. The traffic noise reduction of plenum window has been significantly enhanced by up to ~3 dB in some one-third octave bands. With the increase of frequency, noise reduction of the plenum window also increases. Installation of the 2x3 rigid cylinder array in the plenum window can enhance the sound insulation by ~1 dB.

Citation

Li, X., & Tang, S. K. (2019, June). Sound insulation of plenum windows installed with rigid cylinder array. Presented at inter-noise 2019: Noise Control for a Better Environment, Madrid, Spain

Presentation Conference Type Conference Paper (published)
Conference Name inter-noise 2019: Noise Control for a Better Environment
Start Date Jun 16, 2019
End Date Jun 19, 2019
Acceptance Date Dec 27, 2018
Publication Date 2019
Deposit Date Jul 11, 2022
Book Title Proceedings of inter-noise 2019. The 48th International Congress and Exhibition on Noise Control Engineering
ISBN 9788487985317
Public URL https://hull-repository.worktribe.com/output/4015717
Publisher URL http://www.sea-acustica.es/fileadmin/INTERNOISE_2019/Fchrs/Proceedings/1330.pdf
Related Public URLs https://i-ince.org/congresses.php