Measurement of sensitivity level pressure corrections for LS2P laboratory standard microphones

Lixue Wu; George S.K. Wong; Peter Hanes; Won Suk Ohm

doi:10.1088/0026-1394/42/1/006

Measurement of sensitivity level pressure corrections for LS2P laboratory standard microphones

Lixue Wu, George S.K. Wong, Peter Hanes, Won Suk Ohm

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

The corrections for the influence of atmospheric pressure on the sensitivity levels of laboratory standard microphones vary with frequency. The sensitivity level pressure corrections for Brüel and Kjær 4180 and G.R.A.S. 40AG laboratory standard microphones were measured. Over the barometric pressure range from 94kPa to 106kPa, the sensitivity levels of the model 4180 and model 40AG laboratory standard microphones changed by 0.05 dB at 1 kHz and 0.12 dB at 20kHz, respectively. Empirical equations for sensitivity level pressure corrections for the above microphones are presented.

Original language	English
Pages (from-to)	45-48
Number of pages	4
Journal	Metrologia
Volume	42
Issue number	1
DOIs	https://doi.org/10.1088/0026-1394/42/1/006
Publication status	Published - 2005 Feb

All Science Journal Classification (ASJC) codes

Engineering(all)

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10.1088/0026-1394/42/1/006

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abstract = "The corrections for the influence of atmospheric pressure on the sensitivity levels of laboratory standard microphones vary with frequency. The sensitivity level pressure corrections for Br{\"u}el and Kj{\ae}r 4180 and G.R.A.S. 40AG laboratory standard microphones were measured. Over the barometric pressure range from 94kPa to 106kPa, the sensitivity levels of the model 4180 and model 40AG laboratory standard microphones changed by 0.05 dB at 1 kHz and 0.12 dB at 20kHz, respectively. Empirical equations for sensitivity level pressure corrections for the above microphones are presented.",

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AU - Wong, George S.K.

AU - Hanes, Peter

AU - Ohm, Won Suk

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Y1 - 2005/2

N2 - The corrections for the influence of atmospheric pressure on the sensitivity levels of laboratory standard microphones vary with frequency. The sensitivity level pressure corrections for Brüel and Kjær 4180 and G.R.A.S. 40AG laboratory standard microphones were measured. Over the barometric pressure range from 94kPa to 106kPa, the sensitivity levels of the model 4180 and model 40AG laboratory standard microphones changed by 0.05 dB at 1 kHz and 0.12 dB at 20kHz, respectively. Empirical equations for sensitivity level pressure corrections for the above microphones are presented.

AB - The corrections for the influence of atmospheric pressure on the sensitivity levels of laboratory standard microphones vary with frequency. The sensitivity level pressure corrections for Brüel and Kjær 4180 and G.R.A.S. 40AG laboratory standard microphones were measured. Over the barometric pressure range from 94kPa to 106kPa, the sensitivity levels of the model 4180 and model 40AG laboratory standard microphones changed by 0.05 dB at 1 kHz and 0.12 dB at 20kHz, respectively. Empirical equations for sensitivity level pressure corrections for the above microphones are presented.

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Measurement of sensitivity level pressure corrections for LS2P laboratory standard microphones

Abstract

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