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Open AccessArticle

Integrated Photogrammetric-Acoustic Technique for Qualitative Analysis of the Performance of Acoustic Screens in Sandy Soils

1
Centro de Tecnologías Físicas, Acústica, Materiales y Astrofísica, División Acústica, Universitat Politécnica de Valéncia, Camino de Vera s/n, 46022 Valencia, Spain
2
Departamento de Ingeniería Cartográfica, Geodesia y Fotogrametría, Universitat Politécnica de Valéncia, Camino de Vera s/n, 46022 Valencia, Spain
3
Instituto de Investigación para la Gestión Integrada de zonas Costeras, Universitat Politécnica de Valéncia, Paranimf 1, Grao de Gandia, 46730 Valencia, Spain
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(22), 4881; https://doi.org/10.3390/s19224881
Received: 27 September 2019 / Revised: 5 November 2019 / Accepted: 7 November 2019 / Published: 8 November 2019
In this work, we present an integrated photogrammetric-acoustic technique that, together with the construction of a scaled wind tunnel, allows us to experimentally analyze the permeability behavior of a new type of acoustic screen based on a material called sonic crystal. Acoustic screens are devices used to reduce noise, mostly due to communication infrastructures, in its transmission phase from the source to the receiver. The main constructive difference between these new screens and the classic ones is that the first ones are formed by arrays of acoustic scatterers while the second ones are formed by continuous walls. This implies that, due to their geometry, screens based on sonic crystals are permeable to wind and water, unlike the classic ones. This fact may allow the use of these new screens in sandy soils, where sand would pass through the screen, avoiding the formation of sand dunes that are formed in classic screens and drastically reducing their acoustic performance. In this work, the movement of the sand and the resulting acoustic attenuation in these new screens are analyzed qualitatively, comparing the results with those obtained with the classic ones, and obtaining interesting results from the acoustic point of view. View Full-Text
Keywords: photogrammetry; noise control; acoustic barriers; sonic crystal photogrammetry; noise control; acoustic barriers; sonic crystal
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Bravo, J.M.; Buchón-Moragues, F.; Redondo, J.; Ferri, M.; Sánchez-Pérez, J.V. Integrated Photogrammetric-Acoustic Technique for Qualitative Analysis of the Performance of Acoustic Screens in Sandy Soils. Sensors 2019, 19, 4881.

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