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Measurement of sound calibrator characteristics: NPL contribution to an EC intercomparison.

Dowson, S P (1994) Measurement of sound calibrator characteristics: NPL contribution to an EC intercomparison. NPL Report. RSA(EXT) 45

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Abstract

This report contains the results obtained by the National Physical Laboratory under contract to the Community Bureau of Reference (OCR) of the EEC, as part of an intercomparison of measurements of the characteristics of three different types of sound calibrator: a Broel & Kjrer pistonphone type 4220, a Briiel & Kjrer calibrator type 4230, and a CEL calibrator type 177.
Each sound calibrator was coupled to seven different types/configurations of microphone and the sound pressure level, frequency and total harmonic distortion of the acoustical output were measured on five different days.
The effects of variation of atmospheric pressure, temperature and relative humidity on the characteristics of the sound calibrators were also investigated.

Item Type: Report/Guide (NPL Report)
NPL Report No.: RSA(EXT) 45
Subjects: Acoustics
Acoustics > Sound in Air
Last Modified: 02 Feb 2018 13:19
URI: http://eprintspublications.npl.co.uk/id/eprint/1109

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