Results 21 to 30 of about 295,337 (289)
Modeling (non-)uniform scattering distributions in geometrical acoustics [PDF]
, 2013 In most cases, a surface is not ideally smooth. It rather contains regular and irregular dents, bumps and other textures that influence the reflection of the incident wave.
Alexander Pohl +3 more
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Acoustic design method of ship's cabin based on geometrical acoustics
Zhongguo Jianchuan Yanjiu, 2017 In light of the question of how to select the best noise control position and measures in the large noise transmission path of the cabins of a ship, based on the acoustic ray-tracing method in the theory of geometrical acoustics, and by considering the ...
FENG Aijing, WEI Qiang, ZHANG Dahai
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Geometric acoustics and coherence propagation [PDF]
The Journal of the Acoustical Society of America, 1982 The mutual coherence function of a deterministic acoustic field obeying a parabolic equation will be expressed in terms of Fourier representations of the Green functions for the field. In the short wave limit, these representations allow for a uniform treatment of the field near various real space caustics by circumventing apparent singularities.
David H. Berman, John J. McCoy
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Acoustic Shooting and Bounce Ray Method for Calculating Echoes of Complex Underwater Targets
Applied Sciences, 2022 The acoustic scattering characteristics of a target are of great significance to the design of underwater acoustic detection systems. With the improvement in underwater weapon detection ability, the precision and accuracy of underwater target echo ...
Gang Zhao +4 more
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Bandwidth and resolution of super-resolution imaging with perforated solids
AIP Advances, 2011 Recent experiments on acoustic superlens and hyperlens found anisotropic metamaterials constructed from periodic perforated solids can be used for super-resolution imaging.
Zixian Liang, Jensen Li
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On the sensitivity of the design of composite sound absorbing structures
Materials & Design, 2021 The acoustic properties of composite structures made of a perforated panel, an air gap, and a porous layer, can be studied numerically by a combined use of ad hoc optimization and sensitivity analysis methods.
V.H. Trinh, J. Guilleminot, C. Perrot
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Numerical simulations of Italian Opera Houses using geometrical and wave-based acoustics methods [PDF]
, 2019 The acoustics of opera houses represents an interesting topic in scientific literature due to their architectural and morphological characteristic traits (shape, materials, coupled volumes).
Fratoni, Giulia +8 more
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Asymptotical solutions for a vibrationally relaxing gas
Mathematical Modelling and Analysis, 2009 Using the weakly non‐linear geometrical acoustics theory, we obtain the small amplitude high frequency asymptotic solution to the basic equations governing one dimensional unsteady planar, spherically and cylindrically symmetric flow in a vibrationally ...
Rajan Arora
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Acta AcusticaVirtual reality auralizations offer the opportunity to interactively explore historic buildings and sites through immersive auditory experiences. In the context of historic auralizations, the calibration of room acoustic simulation models is often ...
Postma Barteld N. J.
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Filter-based first- and higher-order diffraction modeling for geometrical acoustics
Acta AcusticaGeometrical acoustics (GA) offers a high computational efficiency, as required for real-time renderings of complex acoustic environments with applications in, e.g., hearing research, architectural planning, and entertainment.
Kirsch Christoph, Ewert Stephan D.
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