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
Citations
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Multizone Wideband Sound Field Reproduction
TL;DR: In this article, a pressure matching approach was used to control the sound field within the zones through the calculation of loudspeaker weights, and the results showed that the approach was effective in the case of multizone wideband sound field reproduction using an array of loudspeakers.
Journal ArticleDOI
Improved integral formulae for supersonic reconstruction of the acoustic field
TL;DR: In this article, surface integral formulae for the frequency dependent power operator in arbitrary geometries were derived and combined with layer representations and measured pressure (or normal velocity) near-field holograms to construct a non-negative intensity distribution quantifying the areas of the vibrating structure that produce radiation to the far-field.
Dissertation
Characterisation of air-borne sound sources using surface coupling techniques
TL;DR: In this paper, two frequency dependent descriptors are defined across such a surface: the blocked sound pressure and the source impedance, i.e., the sound pressure created by the operating source which acts on the enveloping surface when this is made immobile.
Journal ArticleDOI
Reciprocity gap functional in spherical harmonic domain for gridless sound field decomposition
TL;DR: Numerical simulation results indicated that high decomposition and reconstruction accuracies can be achieved by the proposed method, especially at low frequencies, with a low computational cost.
Journal ArticleDOI
Broadband planar nearfield acoustic holography based on one-third-octave band analysis
TL;DR: In this paper, a broadband planar near-field acoustic holography based on one-third-octave band analysis (BPNAH) is described, which combines the root-mean-square pressure corresponding to a one-thousandth-of-a-MHz band with the phase of the pressure corresponding to a single frequency line.
Related Papers (5)
A highly scalable spherical microphone array based on an orthonormal decomposition of the soundfield
Jens Meyer,Gary W. Elko +1 more