Near field acoustic holography with microphones on a rigid sphere (L)
Research output: Contribution to journal › Journal article › Research › peer-review
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.
Original language | English |
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Journal | The Journal of the Acoustical Society of America |
Volume | 129 |
Issue number | 6 |
Pages (from-to) | 3461-4 |
Number of pages | 4 |
ISSN | 0001-4966 |
DOIs | |
Publication status | Published - Jun 2011 |
Externally published | Yes |
Bibliographical note
© 2011 Acoustical Society of America
- 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
Research areas
ID: 212167769