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Methods for determining the pressure sensitivity of working standard microphones - a report on Euromet project A311.

Jarvis, D (1996) Methods for determining the pressure sensitivity of working standard microphones - a report on Euromet project A311. NPL Report. CIRA(EXT)010

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Abstract

Primary measurement standards for sound in air are realised by the reciprocity calibration of laboratory standard microphones. The laboratory standard microphone has an exposed diaphragm and is designed for precise coupling to small cavities. For everyday measurements a working standard microphone ( a measurement microphone with a protection grid) is preferred because it is more robust and less expensive. Metrology laboratories are therefore presented with the problem of calibrating the working standard microphones by comparing them with laboratory standard microphones. In order to develop an agreed method for this calibration a Euromet project was undertaken to investigate possible approaches and to suggest methods which could be standardised by the IEC. This is a report of that work.

Item Type: Report/Guide (NPL Report)
NPL Report No.: CIRA(EXT)010
Subjects: Acoustics
Acoustics > Sound in Air
Last Modified: 02 Feb 2018 13:18
URI: http://eprintspublications.npl.co.uk/id/eprint/439

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