New Acoustics Based on Metamaterials

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Focusing on acoustical metamaterials, the book explores their ability to control sound propagation through mechanisms such as scattering, diffraction, and refraction. It introduces the concept of "new acoustics," emphasizing the importance of symmetry in acoustic fields as a theoretical foundation. The text traces the evolution of acoustical metamaterials from locally resonant sonic materials, highlighting the introduction of negative acoustic parameters like mass density and bulk modulus, which align with the symmetry properties of acoustic equations.