New developments in near-field acoustic holography

N.B. Roozen, A.C. Geerlings, B.T. Verhaar, T. Vliegenthart

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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Abstract

In the field of noise-control engineering, information about the individual strength, andlocation, of the most dominant sources is of vital importance. This information allows theacoustic engineer to take effective measures in his effort to reduce the emitted acoustic noiselevels. Near-field acoustic holography is a measurement-based tool which visualizes theacoustic fields radiated by the noise emitting object, giving the engineer the noise sourceinformation required. In the paper some applications of near-field acoustic holography, asapplied at Philips, will be discussed. A cylindrical version of near-field acoustic holographywas implemented and applied to a Magnetic Resonance Imaging scanner. Using an array ofmicrophones, the measurement time to obtain the holographic recordings was reducedsignificantly, whilst the cylindrical near-field acoustic holography implementation allowed anear-instant post-processing of the acquired data.
Original languageEnglish
Title of host publicationPublication of the Dutch Acoustical Society, "Nederlands Akoestisch Genootschap"
Place of PublicationNetherlands, Utrecht
Pages6-
Publication statusPublished - 2007

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holography
near fields
acoustics
engineers
scanners
magnetic resonance
recording
time measurement
engineering

Cite this

Roozen, N. B., Geerlings, A. C., Verhaar, B. T., & Vliegenthart, T. (2007). New developments in near-field acoustic holography. In Publication of the Dutch Acoustical Society, "Nederlands Akoestisch Genootschap" (pp. 6-). Netherlands, Utrecht.
Roozen, N.B. ; Geerlings, A.C. ; Verhaar, B.T. ; Vliegenthart, T. / New developments in near-field acoustic holography. Publication of the Dutch Acoustical Society, "Nederlands Akoestisch Genootschap". Netherlands, Utrecht, 2007. pp. 6-
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Roozen, NB, Geerlings, AC, Verhaar, BT & Vliegenthart, T 2007, New developments in near-field acoustic holography. in Publication of the Dutch Acoustical Society, "Nederlands Akoestisch Genootschap". Netherlands, Utrecht, pp. 6-.

New developments in near-field acoustic holography. / Roozen, N.B.; Geerlings, A.C.; Verhaar, B.T.; Vliegenthart, T.

Publication of the Dutch Acoustical Society, "Nederlands Akoestisch Genootschap". Netherlands, Utrecht, 2007. p. 6-.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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N2 - In the field of noise-control engineering, information about the individual strength, andlocation, of the most dominant sources is of vital importance. This information allows theacoustic engineer to take effective measures in his effort to reduce the emitted acoustic noiselevels. Near-field acoustic holography is a measurement-based tool which visualizes theacoustic fields radiated by the noise emitting object, giving the engineer the noise sourceinformation required. In the paper some applications of near-field acoustic holography, asapplied at Philips, will be discussed. A cylindrical version of near-field acoustic holographywas implemented and applied to a Magnetic Resonance Imaging scanner. Using an array ofmicrophones, the measurement time to obtain the holographic recordings was reducedsignificantly, whilst the cylindrical near-field acoustic holography implementation allowed anear-instant post-processing of the acquired data.

AB - In the field of noise-control engineering, information about the individual strength, andlocation, of the most dominant sources is of vital importance. This information allows theacoustic engineer to take effective measures in his effort to reduce the emitted acoustic noiselevels. Near-field acoustic holography is a measurement-based tool which visualizes theacoustic fields radiated by the noise emitting object, giving the engineer the noise sourceinformation required. In the paper some applications of near-field acoustic holography, asapplied at Philips, will be discussed. A cylindrical version of near-field acoustic holographywas implemented and applied to a Magnetic Resonance Imaging scanner. Using an array ofmicrophones, the measurement time to obtain the holographic recordings was reducedsignificantly, whilst the cylindrical near-field acoustic holography implementation allowed anear-instant post-processing of the acquired data.

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Roozen NB, Geerlings AC, Verhaar BT, Vliegenthart T. New developments in near-field acoustic holography. In Publication of the Dutch Acoustical Society, "Nederlands Akoestisch Genootschap". Netherlands, Utrecht. 2007. p. 6-