Near field acoustic holography with microphones on a rigid sphere (L)

Finn Jacobsen; Guillermo Moreno-Pescador; Efren Fernandez-Grande; Jørgen Hald

doi:10.1121/1.3575603

Near field acoustic holography with microphones on a rigid sphere (L)

Finn Jacobsen, Guillermo Moreno-Pescador, Efren Fernandez-Grande, Jørgen Hald

42 Citationer (Scopus)

Abstract

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.

Originalsprog	Engelsk
Tidsskrift	The Journal of the Acoustical Society of America
Vol/bind	129
Udgave nummer	6
Sider (fra-til)	3461-4
Antal sider	4
ISSN	0001-4966
DOI	https://doi.org/10.1121/1.3575603
Status	Udgivet - jun. 2011
Udgivet eksternt	Ja

Adgang til dokumentet

10.1121/1.3575603

Citationsformater

@article{80b99e91c5ec43368ce13851fecad59d,

title = "Near field acoustic holography with microphones on a rigid sphere (L)",

abstract = "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.",

keywords = "Acoustics/instrumentation, Computer Simulation, Equipment Design, Holography/instrumentation, Models, Theoretical, Motion, Numerical Analysis, Computer-Assisted, Pressure, Signal Processing, Computer-Assisted, Sound, Sound Spectrography, Time Factors, Transducers, Pressure",

author = "Finn Jacobsen and Guillermo Moreno-Pescador and Efren Fernandez-Grande and J{\o}rgen Hald",

note = "{\textcopyright} 2011 Acoustical Society of America",

year = "2011",

month = jun,

doi = "10.1121/1.3575603",

language = "English",

volume = "129",

pages = "3461--4",

journal = "The Journal of the Acoustical Society of America",

issn = "0001-4966",

publisher = "A I P Publishing LLC",

number = "6",

}

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

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

SN - 0001-4966

VL - 129

SP - 3461

EP - 3464

JO - The Journal of the Acoustical Society of America

JF - The Journal of the Acoustical Society of America

IS - 6

ER -

Near field acoustic holography with microphones on a rigid sphere (L)

Abstract

Adgang til dokumentet

Fingeraftryk

Citationsformater