Sound intensity probe calibrator for field use: calculating the sound field in the calibrator using boundary element modelling

Bernard Ginn, Erling S. Olsen, Vicente Cutanda Henríquez, Johan Gramtorp, Anders Eriksen

Publikation: Bidrag til bog/antologi/rapport/konference-proceedingKonferencebidrag i proceedingsForskningpeer review

Resumé

The newest generation of sound intensity measurement equipment is small and light enough to be hand-held when used for measurements in the field. This increases the need for field verification of the equipment. Field verification must be easy to perform and should not require the equipment to be taken apart. Therefore it was decided at Brüel & Kjær to develop an intensity probe calibrator that could be used for the two-microphone intensity probe as it is, without dismounting the spacer. The geometry of the cavity of the calibrator with probe is rather complex, and it turned out that a simple model based on geometric considerations could not be made for predicting the acoustic properties of the calibrator. Therefore a Boundary Element Model of the calibrator cavity was developed and successfully used in the design of the calibrator. The calculations are shortly described, and the sound fields in the coupler with different cavity geometries and source configurations and the corresponding microphone responses are discussed.

OriginalsprogEngelsk
TitelProceedings of Forum Acusticum 2002 : http://www.cica.es/~forum2002/
Antal sider6
ForlagEuropean Acoustics Association
Publikationsdato2002
StatusUdgivet - 2002
Udgivet eksterntJa
BegivenhedForum Acusticum 2002 - Sevilla, Spanien
Varighed: 16. sep. 200220. sep. 2002

Konference

KonferenceForum Acusticum 2002
LandSpanien
BySevilla
Periode16/09/200220/09/2002

Fingeraftryk

sound intensity
sound fields
microphones
cavities
probes
acoustic properties
geometry
spacers
couplers
configurations

Citer dette

Ginn, B., S. Olsen, E., Cutanda Henríquez, V., Gramtorp, J., & Eriksen, A. (2002). Sound intensity probe calibrator for field use: calculating the sound field in the calibrator using boundary element modelling. I Proceedings of Forum Acusticum 2002: http://www.cica.es/~forum2002/ European Acoustics Association.
Ginn, Bernard ; S. Olsen, Erling ; Cutanda Henríquez, Vicente ; Gramtorp, Johan ; Eriksen, Anders. / Sound intensity probe calibrator for field use: calculating the sound field in the calibrator using boundary element modelling. Proceedings of Forum Acusticum 2002: http://www.cica.es/~forum2002/. European Acoustics Association, 2002.
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abstract = "The newest generation of sound intensity measurement equipment is small and light enough to be hand-held when used for measurements in the field. This increases the need for field verification of the equipment. Field verification must be easy to perform and should not require the equipment to be taken apart. Therefore it was decided at Br{\"u}el & Kj{\ae}r to develop an intensity probe calibrator that could be used for the two-microphone intensity probe as it is, without dismounting the spacer. The geometry of the cavity of the calibrator with probe is rather complex, and it turned out that a simple model based on geometric considerations could not be made for predicting the acoustic properties of the calibrator. Therefore a Boundary Element Model of the calibrator cavity was developed and successfully used in the design of the calibrator. The calculations are shortly described, and the sound fields in the coupler with different cavity geometries and source configurations and the corresponding microphone responses are discussed.",
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Ginn, B, S. Olsen, E, Cutanda Henríquez, V, Gramtorp, J & Eriksen, A 2002, Sound intensity probe calibrator for field use: calculating the sound field in the calibrator using boundary element modelling. i Proceedings of Forum Acusticum 2002: http://www.cica.es/~forum2002/. European Acoustics Association, Forum Acusticum 2002, Sevilla, Spanien, 16/09/2002.

Sound intensity probe calibrator for field use: calculating the sound field in the calibrator using boundary element modelling. / Ginn, Bernard; S. Olsen, Erling; Cutanda Henríquez, Vicente; Gramtorp, Johan; Eriksen, Anders.

Proceedings of Forum Acusticum 2002: http://www.cica.es/~forum2002/. European Acoustics Association, 2002.

Publikation: Bidrag til bog/antologi/rapport/konference-proceedingKonferencebidrag i proceedingsForskningpeer review

TY - GEN

T1 - Sound intensity probe calibrator for field use: calculating the sound field in the calibrator using boundary element modelling

AU - Ginn, Bernard

AU - S. Olsen, Erling

AU - Cutanda Henríquez, Vicente

AU - Gramtorp, Johan

AU - Eriksen, Anders

PY - 2002

Y1 - 2002

N2 - The newest generation of sound intensity measurement equipment is small and light enough to be hand-held when used for measurements in the field. This increases the need for field verification of the equipment. Field verification must be easy to perform and should not require the equipment to be taken apart. Therefore it was decided at Brüel & Kjær to develop an intensity probe calibrator that could be used for the two-microphone intensity probe as it is, without dismounting the spacer. The geometry of the cavity of the calibrator with probe is rather complex, and it turned out that a simple model based on geometric considerations could not be made for predicting the acoustic properties of the calibrator. Therefore a Boundary Element Model of the calibrator cavity was developed and successfully used in the design of the calibrator. The calculations are shortly described, and the sound fields in the coupler with different cavity geometries and source configurations and the corresponding microphone responses are discussed.

AB - The newest generation of sound intensity measurement equipment is small and light enough to be hand-held when used for measurements in the field. This increases the need for field verification of the equipment. Field verification must be easy to perform and should not require the equipment to be taken apart. Therefore it was decided at Brüel & Kjær to develop an intensity probe calibrator that could be used for the two-microphone intensity probe as it is, without dismounting the spacer. The geometry of the cavity of the calibrator with probe is rather complex, and it turned out that a simple model based on geometric considerations could not be made for predicting the acoustic properties of the calibrator. Therefore a Boundary Element Model of the calibrator cavity was developed and successfully used in the design of the calibrator. The calculations are shortly described, and the sound fields in the coupler with different cavity geometries and source configurations and the corresponding microphone responses are discussed.

M3 - Article in proceedings

BT - Proceedings of Forum Acusticum 2002

PB - European Acoustics Association

ER -

Ginn B, S. Olsen E, Cutanda Henríquez V, Gramtorp J, Eriksen A. Sound intensity probe calibrator for field use: calculating the sound field in the calibrator using boundary element modelling. I Proceedings of Forum Acusticum 2002: http://www.cica.es/~forum2002/. European Acoustics Association. 2002