Statistically optimised near field acoustic holography based on particle velocity measurements

Finn Jacobsen; Virginie Jaud

Statistically optimised near field acoustic holography based on particle velocity measurements

Finn Jacobsen
, Virginie Jaud

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

Statistically optimised near field acoustic holography (SONAH) is a variant of conventional near field acoustic holography (NAH) that avoids spatial Fourier transforms and thus some of the errors and limitations caused by spatial transforms. In particular the spectral leakage caused by the spatial windows in the NAH procedure is avoided, and thus the usual requirement of a measurement aperture that extends well beyond the source can be relaxed. Both NAH and SONAH are usually based on measurement of the sound pressure. However, a recent investigation has showed that NAH based on measurement of the acoustic particle velocity is more accurate and less sensitive to transducer mismatch errors that NAH based on measurement of the sound pressure. In this investigation it is examined whether there is a similar advantage in using the particle velocity in SONAH.

Original language	English
Title of host publication	13th International Congress on Sound and Vibration 2006, ICSV 2006
Volume	2
Publication date	2006
Pages	1336-1343
ISBN (Print)	978-162748150-2
Publication status	Published - 2006
Event	13th International Congress on Sound and Vibration - Vienna, Austria Duration: 2 Jul 2006 → 6 Jul 2006 Conference number: 13

Conference

Conference	13th International Congress on Sound and Vibration
Number	13
Country/Territory	Austria
City	Vienna
Period	02/07/2006 → 06/07/2006

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title = "Statistically optimised near field acoustic holography based on particle velocity measurements",

abstract = "Statistically optimised near field acoustic holography (SONAH) is a variant of conventional near field acoustic holography (NAH) that avoids spatial Fourier transforms and thus some of the errors and limitations caused by spatial transforms. In particular the spectral leakage caused by the spatial windows in the NAH procedure is avoided, and thus the usual requirement of a measurement aperture that extends well beyond the source can be relaxed. Both NAH and SONAH are usually based on measurement of the sound pressure. However, a recent investigation has showed that NAH based on measurement of the acoustic particle velocity is more accurate and less sensitive to transducer mismatch errors that NAH based on measurement of the sound pressure. In this investigation it is examined whether there is a similar advantage in using the particle velocity in SONAH.",

author = "Finn Jacobsen and Virginie Jaud",

year = "2006",

language = "English",

isbn = "978-162748150-2",

volume = "2",

pages = "1336--1343",

booktitle = "13th International Congress on Sound and Vibration 2006, ICSV 2006",

note = "13th International Congress on Sound and Vibration, ICSV13 ; Conference date: 02-07-2006 Through 06-07-2006",

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T1 - Statistically optimised near field acoustic holography based on particle velocity measurements

AU - Jacobsen, Finn

AU - Jaud, Virginie

N1 - Conference code: 13

PY - 2006

Y1 - 2006

N2 - Statistically optimised near field acoustic holography (SONAH) is a variant of conventional near field acoustic holography (NAH) that avoids spatial Fourier transforms and thus some of the errors and limitations caused by spatial transforms. In particular the spectral leakage caused by the spatial windows in the NAH procedure is avoided, and thus the usual requirement of a measurement aperture that extends well beyond the source can be relaxed. Both NAH and SONAH are usually based on measurement of the sound pressure. However, a recent investigation has showed that NAH based on measurement of the acoustic particle velocity is more accurate and less sensitive to transducer mismatch errors that NAH based on measurement of the sound pressure. In this investigation it is examined whether there is a similar advantage in using the particle velocity in SONAH.

AB - Statistically optimised near field acoustic holography (SONAH) is a variant of conventional near field acoustic holography (NAH) that avoids spatial Fourier transforms and thus some of the errors and limitations caused by spatial transforms. In particular the spectral leakage caused by the spatial windows in the NAH procedure is avoided, and thus the usual requirement of a measurement aperture that extends well beyond the source can be relaxed. Both NAH and SONAH are usually based on measurement of the sound pressure. However, a recent investigation has showed that NAH based on measurement of the acoustic particle velocity is more accurate and less sensitive to transducer mismatch errors that NAH based on measurement of the sound pressure. In this investigation it is examined whether there is a similar advantage in using the particle velocity in SONAH.

M3 - Article in proceedings

SN - 978-162748150-2

VL - 2

SP - 1336

EP - 1343

BT - 13th International Congress on Sound and Vibration 2006, ICSV 2006

T2 - 13th International Congress on Sound and Vibration

Y2 - 2 July 2006 through 6 July 2006

ER -

Statistically optimised near field acoustic holography based on particle velocity measurements

Abstract

Conference

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