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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Journal ArticleDOI
Bessel Nulls Recovery in Spherical Microphone Arrays for Time-Limited Signals
TL;DR: In this article, it was shown that the ill-conditioning due to the spherical Bessel functions can be reduced using nonuniform sampling in the frequency domain, and an experimental example is presented for use of the method in single-sphere measurement in an auditorium.
Journal ArticleDOI
A Complex Panning Method for Near-Field Imaging
Dylan Menzies,Filippo Maria Fazi +1 more
TL;DR: An extended panning method is presented that can also produce image cues for the near-field region, by the control of Inter-aural Level Difference cues in the low frequency range below ∼1000 Hz.
Estimation of the stability of a virtual sound source using a microphone array
Filippo Maria Fazi,Dylan Menzies +1 more
TL;DR: A technique is proposed by which a microphone array is used to estimate the acoustic impedance of the field at a given location and the theory used to evaluate the robustness of the perceived position of a virtual source is reviewed.
Book ChapterDOI
Performance Evaluation of Adaptive Algorithms for Wave Field Analysis/Synthesis Using Sound Field Simulations
TL;DR: Digital algorithms based on adaptation processing have to be applied inside the WFS/WFA in order for these techniques to be used in real applications (music, cinema, theatre, etc.).
Journal ArticleDOI
In-situ Measurements of Surface Reflection Properties
TL;DR: In this paper, a portable setup was built that allows for a complete hemispherical measurement of the sound pressure distribution using less than 30 sensors, and the first measurement results were presented and discussed.
Related Papers (5)
A highly scalable spherical microphone array based on an orthonormal decomposition of the soundfield
Jens Meyer,Gary W. Elko +1 more