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Fundamental standards for acoustics based on optical methods - first stage report.

Theobald, P; Preston, R C; Robinson, S P; Barham, R G; Tyrer, T*; Greated, C*; Campbell, M*; Schlicke, T*; Hargrave, S*; Swift, C*; Crickmore, R* (2002) Fundamental standards for acoustics based on optical methods - first stage report. NPL Report. CMAM 83

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Abstract

This report documents the results of a literature survey into optical methods for the measurement of acoustic parameters ion air and water. The report reviews existing methods for the measurement of sound in air and in water in order to establish the requirements for metrology-based optical methods in sound measurement. The favoured approach for developing fundamental standards for acoustics based on optical methods are laser Doppler anemometry (LDA) using photon correlation for air, and laser Doppler vibrometry (LDV) using a reflecting membrane in the acoustic field for water.
A review of current progress on the project is also presented with recommendations made for the direction of work to be undertaken in the second phase of the project. This report is the Deliverable for the Phase One Work Package for Project 3.6 of the NMS Quantum Metrology Programme of the UK Department of Trade and Industry. The project is being undertaken by a consortium of the National Physical Laboratory, Loughborough University and Edinburgh University, with Laser Optical Engineering Ltd and QinetiQ as sub-contractors.

Item Type: Report/Guide (NPL Report)
NPL Report No.: CMAM 83
Subjects: Acoustics
Last Modified: 02 Feb 2018 13:17
URI: http://eprintspublications.npl.co.uk/id/eprint/2435

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