Open AccessBook
Fourier Acoustics: Sound Radiation and Nearfield Acoustical Holography
Earl G. Williams,J. Adin Mann +1 more
TLDR
The Inverse Problem: Cylindrical NAH. as discussed by the authors The Inverse problem: Planar NAH and the Inverse NP-hardness of planar plane waves.Abstract:
Preface. Fourier Transforms & Special Functions. Plane Waves. The Inverse Problem: Planar NAH. Cylindrical Waves. The Inverse Problem: Cylindrical NAH. Spherical Waves. Spherical NAH. Green Functions & the Helmholtz Integral. Index.read more
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Dissertation
Diffusion acoustique par des coques cylindriques limitées immergées. On des hélicoïdales: analyse des réponses temporelles et identification complète des résonances
TL;DR: In this article, the authors propose an approach based on an approche modale hybride combinant the theorie de l'elasticite and l'integrale de diffraction de Kirchhoff.
Horizontal Local Sound Field Propagation Based on Sound Source Dimension Mismatch.
TL;DR: The results of computer simulations indicate that the proposed method can realize more effective local sound field propagation in the horizontal plane at all of the temporal frequencies than a simple monopole source and the conventional evanescent wave production method.
Journal ArticleDOI
Material damage modeling and detection in a thin metallic sheet and sandwich panel using passive acoustic transmission
TL;DR: In this article, a passive acoustic method is developed for material damage detection and location in homogeneous thin metallic sheets and sandwich panels using non-contact acoustic transmission measurements, which is most readily identified where transmitted sound intensity is highest in the resonant frequency range of the panel.
Seismic reconnaissance in a tunnel environment using full waveform inversion
TL;DR: In this article, the authors verwenden the Perfectly Matched Layers (PML) in a tunnel modelled with reflektierende Rander.
Proceedings ArticleDOI
Multiple-input multiple-output circular SAR
TL;DR: This paper introduces multiple-input multiple-output (MIMO) techniques in order to tackle this limitation of the spotlighted region, thereby being able to extend the applications of CSAR to much wider areas.
Related Papers (5)
A highly scalable spherical microphone array based on an orthonormal decomposition of the soundfield
Jens Meyer,Gary W. Elko +1 more