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Sonic Crystals Acoustic Screens and Diffusers
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DOI：10.1016/j.apacoust.2019.01.004.png)
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摘要
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This article presents the use of advanced tools applied to the design of devices that can solve specific acoustic problems, improving the already existing devices based on classic technologies. Specifically, we have used two different configurations of a material called Sonic Crystals, which is formed by arrays of acoustic scatterers, to obtain acoustic screens with high diffusion properties by means of an optimization process. This design procedure has been carried out using a multiobjective evolutionary algorithm along to an acoustic simulation model developed with the numerical method called Finite Difference Time Domain. The results obtained are discussed in terms of both the acoustic performance and the robustness of the devices achieved. (C) 2019 Elsevier Ltd. All rights reserved.
Keyword:
Acoustic barrier
Sound diffuser
Sonic Crystals
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3.6
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分享收藏Performance of profiled single noise barriers covered with quadratic residue diffusers.png)
APPLIED ACOUSTICSOAAI
APPLIED ACOUSTICSIF3.6
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