Near field acoustic holography with microphones on a rigid sphere (L)
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Near field acoustic holography with microphones on a rigid sphere (L). / Jacobsen, Finn; Moreno-Pescador, Guillermo; Fernandez-Grande, Efren; Hald, Jørgen.
In: The Journal of the Acoustical Society of America, Vol. 129, No. 6, 06.2011, p. 3461-4.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Near field acoustic holography with microphones on a rigid sphere (L)
AU - Jacobsen, Finn
AU - Moreno-Pescador, Guillermo
AU - Fernandez-Grande, Efren
AU - Hald, Jørgen
N1 - © 2011 Acoustical Society of America
PY - 2011/6
Y1 - 2011/6
N2 - Spherical near field acoustic holography (spherical NAH) is a technique that makes it possible to reconstruct the sound field inside and just outside a spherical surface on which the sound pressure is measured with an array of microphones. This is potentially very useful for source identification. The sphere can be acoustically transparent or it can be rigid. A rigid sphere is somewhat more practical than an open sphere. However, spherical NAH based on a rigid sphere is only valid if it can be assumed that the sphere has a negligible influence on the incident sound field, and this is not necessarily a good assumption when the sphere is very close to a radiating surface. This Letter examines the matter through simulations and experiments.
AB - Spherical near field acoustic holography (spherical NAH) is a technique that makes it possible to reconstruct the sound field inside and just outside a spherical surface on which the sound pressure is measured with an array of microphones. This is potentially very useful for source identification. The sphere can be acoustically transparent or it can be rigid. A rigid sphere is somewhat more practical than an open sphere. However, spherical NAH based on a rigid sphere is only valid if it can be assumed that the sphere has a negligible influence on the incident sound field, and this is not necessarily a good assumption when the sphere is very close to a radiating surface. This Letter examines the matter through simulations and experiments.
KW - Acoustics/instrumentation
KW - Computer Simulation
KW - Equipment Design
KW - Holography/instrumentation
KW - Models, Theoretical
KW - Motion
KW - Numerical Analysis, Computer-Assisted
KW - Pressure
KW - Signal Processing, Computer-Assisted
KW - Sound
KW - Sound Spectrography
KW - Time Factors
KW - Transducers, Pressure
U2 - 10.1121/1.3575603
DO - 10.1121/1.3575603
M3 - Journal article
C2 - 21682371
VL - 129
SP - 3461
EP - 3464
JO - Acoustical Society of America. Journal
JF - Acoustical Society of America. Journal
SN - 0001-4966
IS - 6
ER -
ID: 212167769