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On the use of an absorption layer for the angular spectrum approach (L)
J. Acoust. Soc. Am. Volume 131, Issue 2, pp. 999-1002 (2012); (4 pages)
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Add to FacebookReducing the spatial aliasing error of the angular spectrum method by using an absorption layer is investigated in this paper. The acoustic equation including the absorption layer is presented and is transformed in the spatial frequency domain, where an implicit analytic solution is readily available. Its approximation, which is more suitable for numerical simulation, is derived and is numerically implemented. The comparisons between the present method and available methods demonstrate its validity and advantages.
© 2012 Acoustical Society of America
Article Outline
- INTRODUCTION
- THEORY
- NUMERICAL SIMULATIONS
- CONCLUSIONS
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History
Received 22 Aug 2011
Accepted 16 Dec 2011
Revised 30 Nov 2011
Accepted 16 Dec 2011
Revised 30 Nov 2011
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