© 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.
|Title of host publication||2015 International Conference on Noise and Fluctuations, ICNF 2015|
|Place of Publication||China|
|Publication status||Published - 2015|
|Event||23rd International Conference on Noise and Fluctuations - Xian, China|
Duration: 2 Jun 2015 → 5 Jun 2015
|Conference||23rd International Conference on Noise and Fluctuations|
|Period||2/06/15 → 5/06/15|