Role of quasinormal modes in controlling the sound transmission loss of duct mufflers

Jie Pan, James Leader, Yuhui Tong

Research output: Chapter in Book/Conference paperConference paper

4 Citations (Scopus)

Abstract

© 2015 IEEE. In this work, the sound transmission of plane waves in a duct through an expansion chamber is used to illustrate the role of the quasinormal modes of the chamber in controlling transmission loss. The complex natural frequencies and mode shapes of the quasinormal modes are presented, demonstrating the loss, orthogonality, and frequency-dependent properties of the modes. We demonstrate that the expansion of the sound pressure in the chamber by the quasinormal modes is complete and that the interaction between the quasinormal modes and incident sound can be used to characterise the features of the transmission loss.
Original languageEnglish
Title of host publication2015 International Conference on Noise and Fluctuations, ICNF 2015
Place of PublicationChina
PublisherWiley-IEEE Press
Pages1-4
ISBN (Print)9781467383356
DOIs
Publication statusPublished - 2015
Event23rd International Conference on Noise and Fluctuations - Xian, China
Duration: 2 Jun 20155 Jun 2015

Conference

Conference23rd International Conference on Noise and Fluctuations
CountryChina
CityXian
Period2/06/155/06/15

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Cite this

Pan, J., Leader, J., & Tong, Y. (2015). Role of quasinormal modes in controlling the sound transmission loss of duct mufflers. In 2015 International Conference on Noise and Fluctuations, ICNF 2015 (pp. 1-4). China: Wiley-IEEE Press. https://doi.org/10.1109/ICNF.2015.7288634