Traffic noise mitigation using single and double barrier caps of different shapes for an extended frequency range
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AuthorPardo Quiles, Domingo Javier; Rodríguez Rodríguez, José Víctor; Molina García-Pardo, José María; Juan Llácer, Leandro
Knowledge AreaTeoría de la Señal y las Comunicaciones
SponsorsThis work was funded by the Ministerio de Ciencia e Innovación, Spain (TEC2016-78028-C3-2-P and PID2019-107885GB-C33), and by the European Fonds Européen de Développement Économique et Régional (FEDER) funds.
Bibliographic CitationPardo-Quiles, D., Rodríguez, J.-V., Molina-García-Pardo, J.-M., & Juan-Llácer, L. (2020). Traffic Noise Mitigation Using Single and Double Barrier Caps of Different Shapes for an Extended Frequency Range. Applied Sciences, 10(17), 5746. doi:10.3390/app10175746
KeywordsTraffic noise mitigation
Noise barrier caps
Uniform theory of diffraction
The primary function of noise barriers is to shield inhabitants of affected areas from excessive noise generated by road traffic. To enhance the performance of noise barriers while simultaneously adhering to height restrictions, the attachment of structures (caps) of different shapes to the tops of conventional screens can be considered. These caps can significantly impact the diffracted sound energy, thereby increasing the desired global acoustic losses. This work presents a comprehensive study of the acoustic performance of noise barriers with single and double attached caps of different shapes through a calculation of their insertion losses (IL). This study comprehensively addresses and compares different types, sizes, combinations, and numbers of noise barrier caps for different scenarios (including sloping and absorbent grounds) and sources (“car” and “ambulance”) for an extended frequency band up to 10 kHz. To the best of the authors’ knowledge, this is a range that has not previously ...
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