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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Journal ArticleDOI
The acoustic power of a vibrating clamped circular plate revisited in the wide low frequency range using expansion into the radial polynomials
TL;DR: The system of the two coupled differential equations is solved, one for the excited and damped vibrations of the plate and the other one-the Helmholtz equation, leading to results for the modal impedance coefficients useful for a comprehensive numerical analysis of sound radiation.
Proceedings ArticleDOI
Exterior and Interior Sound Field Separation Using Convex Optimization: Comparison of Signal Models
TL;DR: An exterior (direct source) and interior (reverber-ant) sound field separation method using a convex optimization algorithm is proposed and results indicate that higher separation accuracy than that for existing methods can be achieved by the proposed method with a small number of microphones and a flexible microphone arrangement.
Proceedings ArticleDOI
Mechanical properties of carbon fiber composites for applications in space
TL;DR: In this paper, a method of measurement mechanical properties of carbon fiber composites in space is described. And a great deal of attention is paid to signal processing using 8-bit microcontroler.
Numerical evaluation of binaural synthesis from rigid spherical microphone array recordings
TL;DR: It was found that the overall synthesis accuracy could not be indefinitely improved by simply adding more microphones, and the limit to the number of microphones beyond which the Overall synthesis accuracy did not increase was higher for the interaural spectral information than for the monaural one.
Book ChapterDOI
Nearfield Acoustical Holography
TL;DR: In this article, near-field acoustical holography (NAH) data are processed to take advantage of the evanescent wavefield to image sources that are separated less than one-eighth of a wavelength.
Related Papers (5)
A highly scalable spherical microphone array based on an orthonormal decomposition of the soundfield
Jens Meyer,Gary W. Elko +1 more