Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Truncated aperture extrapolation for Fourier-based near-field acoustic holography by means of border-padding
Eindhoven University of Technology.ORCID-id: 0000-0002-3609-3005
2009 (engelsk)Inngår i: Journal of the Acoustical Society of America, ISSN 0001-4966, E-ISSN 1520-8524, Vol. 125, nr 6, s. 3844-3854Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Although near-field acoustic holography (NAH) is recognized as a powerful and extremely fast acoustic imaging method based on the inverse solution of the wave-equation, its practical implementation has suffered from problems with the use of the discrete Fourier transformation (DFT) in combination with small aperture sizes and windowing. In this paper, a method is presented that extrapolates the finite spatial aperture before the DFT is applied, which is based on the impulse response information of the known aperture data. The developed method called linear predictive border-padding is an aperture extrapolation technique that greatly reduces leakage and spatial truncation errors in planar NAH (PNAH). Numerical simulations and actual measurements on a hard-disk drive and a cooling fan illustrate the low error, high speed, and utilization of border-padding. Border-padding is an aperture extrapolation technique that makes PNAH a practical and accurate inverse near-field acoustic imaging method.

sted, utgiver, år, opplag, sider
2009. Vol. 125, nr 6, s. 3844-3854
Emneord [en]
Discrete fourier transformation, Extrapolation techniques, Fourier, Hard Disk Drive, Imaging method, Inverse solution, Near-field acoustics, Nearfield Acoustic Holography, Numerical simulation, Practical implementation, Small aperture, Truncation errors, Acoustic holography, Acoustics, Approximation theory, Discrete Fourier transforms, Extrapolation, Fourier analysis, Holographic interferometry, Imaging systems, Impulse response, Interferometry, Inverse problems, Probability density function, Acoustic imaging, accuracy, article, Fourier transformation, frequency modulation, holography, imaging, mathematical analysis, measurement, noise measurement, prediction, priority journal, quantum mechanics, simulation, sound detection, spectroscopy, waveform
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-66757DOI: 10.1121/1.3126994ISI: 000266667400043OAI: oai:DiVA.org:kth-66757DiVA, id: diva2:498955
Merknad
QC 20120213Tilgjengelig fra: 2012-02-12 Laget: 2012-01-27 Sist oppdatert: 2017-12-07bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Andre lenker

Forlagets fulltekst

Personposter BETA

Lopez Arteaga, Ines

Søk i DiVA

Av forfatter/redaktør
Lopez Arteaga, Ines
I samme tidsskrift
Journal of the Acoustical Society of America

Søk utenfor DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 62 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf