Suitability of laser Doppler velocimetry for the calibration of pressure microphones
The details of a new approach for absolute calibration of microphones, based on the direct measurement of acoustic particle velocity using laser Doppler velocimetry (LDV), are presented and discussed. The calibration technique is carried out inside a tube in which plane waves propagate and closed by...
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| Veröffentlicht in: | Applied acoustics 2008-12, Vol.69 (12), p.1308-1317 |
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| container_end_page | 1317 |
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| container_title | Applied acoustics |
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| creator | Degroot, A. MacDonald, R. Richoux, O. Gazengel, B. Campbell, M. |
| description | The details of a new approach for absolute calibration of microphones, based on the direct measurement of acoustic particle velocity using laser Doppler velocimetry (LDV), are presented and discussed. The calibration technique is carried out inside a tube in which plane waves propagate and closed by a rigid termination. The method developed proposes to estimate the acoustic pressure with two velocity measurements and a physical model. Minimum theoretical uncertainties on the estimated pressure and minimum measurable pressure are calculated from the Cramer Rao bounds on the estimated acoustic velocity amplitude and phase. These uncertainties and the minimum measurable pressure help to optimize the experimental set up. Acoustic pressure estimations performed with LDV are compared with acoustic pressures obtained with a reference microphone. Measurements lead to a minimum bias of 0.006
dB and a minimum uncertainty of 0.013
dB on the acoustic pressure estimation for frequencies 1360
Hz and 680
Hz. |
| doi_str_mv | 10.1016/j.apacoust.2007.09.003 |
| format | Article |
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dB and a minimum uncertainty of 0.013
dB on the acoustic pressure estimation for frequencies 1360
Hz and 680
Hz.</description><subject>Acoustics</subject><subject>CRB</subject><subject>Engineering Sciences</subject><subject>Exact sciences and technology</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>LDV</subject><subject>Mechanics</subject><subject>Microphone calibration</subject><subject>Physics</subject><subject>PIV</subject><subject>Pressure estimation</subject><subject>Transduction; acoustical devices for the generation and reproduction of sound</subject><subject>Uncertainties</subject><issn>0003-682X</issn><issn>1872-910X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNqFkE9PwzAMxSMEEmPwFVAvHDi0OGmbtjem8WdIkzgwpN2iNHW0TN1SJd2kfXtSFXblZNl6P9vvEXJPIaFA-dM2kZ1U9uD7hAEUCVQJQHpBJrQsWFxRWF-SCYRRzEu2viY33m9DCyzPJ2T1dTC9rE1r-lNkddRKjy56sV3XhnrE1iqzw96dIm1d1G8wUrI1tZO9sfsB6Bx6f3AY7YxyttvYPfpbcqVl6_Hut07J99vrar6Il5_vH_PZMlYZy_q4rjTqVFPZaI05qwvAUivJKSsankJdIa0yriTWSuZZVhZ5mrOs5iqvtU4bnU7J47h3I1vRObOT7iSsNGIxW4phBpCXFeP8SIOWj9rwpfcO9RmgIIYcxVb85SiGHAVUgU8D-DCCnfTBu3Zyr4w_0wyKkla8CLrnUYfB8dGgE14Z3CtsjEPVi8aa_079AG4cjuM</recordid><startdate>20081201</startdate><enddate>20081201</enddate><creator>Degroot, A.</creator><creator>MacDonald, R.</creator><creator>Richoux, O.</creator><creator>Gazengel, B.</creator><creator>Campbell, M.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>1XC</scope><scope>VOOES</scope><orcidid>https://orcid.org/0000-0002-9655-8177</orcidid><orcidid>https://orcid.org/0000-0002-5715-9341</orcidid></search><sort><creationdate>20081201</creationdate><title>Suitability of laser Doppler velocimetry for the calibration of pressure microphones</title><author>Degroot, A. ; MacDonald, R. ; Richoux, O. ; Gazengel, B. ; Campbell, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c424t-b9fef3f1adffe52b70e8fca6127d630b9e1946caebca5448753524b6c5bff3df3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Acoustics</topic><topic>CRB</topic><topic>Engineering Sciences</topic><topic>Exact sciences and technology</topic><topic>Fundamental areas of phenomenology (including applications)</topic><topic>LDV</topic><topic>Mechanics</topic><topic>Microphone calibration</topic><topic>Physics</topic><topic>PIV</topic><topic>Pressure estimation</topic><topic>Transduction; acoustical devices for the generation and reproduction of sound</topic><topic>Uncertainties</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Degroot, A.</creatorcontrib><creatorcontrib>MacDonald, R.</creatorcontrib><creatorcontrib>Richoux, O.</creatorcontrib><creatorcontrib>Gazengel, B.</creatorcontrib><creatorcontrib>Campbell, M.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>Hyper Article en Ligne (HAL) (Open Access)</collection><jtitle>Applied acoustics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Degroot, A.</au><au>MacDonald, R.</au><au>Richoux, O.</au><au>Gazengel, B.</au><au>Campbell, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Suitability of laser Doppler velocimetry for the calibration of pressure microphones</atitle><jtitle>Applied acoustics</jtitle><date>2008-12-01</date><risdate>2008</risdate><volume>69</volume><issue>12</issue><spage>1308</spage><epage>1317</epage><pages>1308-1317</pages><issn>0003-682X</issn><eissn>1872-910X</eissn><coden>AACOBL</coden><abstract>The details of a new approach for absolute calibration of microphones, based on the direct measurement of acoustic particle velocity using laser Doppler velocimetry (LDV), are presented and discussed. The calibration technique is carried out inside a tube in which plane waves propagate and closed by a rigid termination. The method developed proposes to estimate the acoustic pressure with two velocity measurements and a physical model. Minimum theoretical uncertainties on the estimated pressure and minimum measurable pressure are calculated from the Cramer Rao bounds on the estimated acoustic velocity amplitude and phase. These uncertainties and the minimum measurable pressure help to optimize the experimental set up. Acoustic pressure estimations performed with LDV are compared with acoustic pressures obtained with a reference microphone. Measurements lead to a minimum bias of 0.006
dB and a minimum uncertainty of 0.013
dB on the acoustic pressure estimation for frequencies 1360
Hz and 680
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| ispartof | Applied acoustics, 2008-12, Vol.69 (12), p.1308-1317 |
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| language | eng |
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| source | ScienceDirect |
| subjects | Acoustics CRB Engineering Sciences Exact sciences and technology Fundamental areas of phenomenology (including applications) LDV Mechanics Microphone calibration Physics PIV Pressure estimation Transduction acoustical devices for the generation and reproduction of sound Uncertainties |
| title | Suitability of laser Doppler velocimetry for the calibration of pressure microphones |
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