Performance of sonic crystal acoustic barrier with resonant scatterers

• Autores: Mário Martins, Luís Godinho, Luis Picado-Santos
• Localización: Tecniacústica 2017: 48º Congreso Español de Acústica ; Encuentro Ibérico de Acústica ; European Symposium on Underwater Acoustics Applications ; European Symposium on Sustainable Building Acoustics : A Coruña 3-6 Octubre 2017 / coord. por Antonio Calvo Manzano, Antonio Pérez López, 2017, ISBN 978-84-87985-29-4, págs. 856-863
• Idioma: inglés
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• Resumen

  • Sonic crystals have been regarded with interest for the attenuation of sound waves in a specific frequency range, since it is possible to define their geometry to match a given range of dominant noise frequencies. Besides the attenuation due to the geometric configuration (multiple internal scattering), the sound attenuation can be extended to a broader range of frequencies, making use of complementary resonance phenomena.

    In the present article, a numerical formulation based on the Method of Fundamental Solutions is presented, with the objective of describing both phenomena and allowing the evaluation of different configurations for sonic crystal barriers