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Title: Analysis of the interaction between cascade sub-chambers using the acoustic scattering matrix method
Authors: Tong, Y
Yu, X
Pan, J
Graf, T
Issue Date: 2015
Source: 44th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2015, 9-12 August 2015 How to cite?
Abstract: Cascade structures are widely used in the design of reactive silencers. Previous studies have demonstrated that a broadband transmission loss (TL) can be achieved via an optimal design for the cascade sub-chambers of the structures. Although the TL of each sub-chamber can be estimated, the overall transmission loss of the silencer is not simply a summation of the TLs of the sub-chambers. The acoustical coupling between sub-chambers must be taken into account. The scattering matrix method is used to evaluate the contribution of each sub-chamber to the TL of the silencer. The method is illustrated numerically using 2D examples, which can be extended to 3D cases in straightforward manner.
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