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About This Item
Full Description
All current amendments available at time of purchase are included with the purchase of this document.
Document History
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BS EN ISO 389-1:2018
Acoustics. Reference zero for the calibration of audiometric equipment-Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones- Most Recent
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BS EN ISO 389-1:2000
Acoustics. Reference zero for the calibration of audiometric equipment-Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones- Historical Version
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BS EN ISO 389:1997
Acoustics. Standard reference zero for the calibration of pure tone air conduction audiometers- Historical Version
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BS 2497-5:1988
Standard reference zero for the calibration of pure tone air conduction audiometers-Specification for a standard reference zero using an acoustic coupler complying with BS 4668- Historical Version
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BS 2497-7:1988
Standard reference zero for the calibration of pure tone air conduction audiometers-Specification for a standard reference zero at frequencies intermediate between those given in Parts 5 and 6 of BS 2497- Historical Version
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BS 2497-6:1988
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Acoustics. Reference zero for the calibration of audiometric equipment-Specification for a standard reference zero using an artificial ear complying with BS 4669- Historical Version
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BS 2497-3:1972
Specification for a reference zero for the calibration of pure-tone audiometers-Data for a wide-band artificial ear complying with BS 4669- Historical Version
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BS 2497-2:1969
Specification for a reference zero for the calibration of pure-tone audiometers-Data for certain earphones used in commercial practice- Historical Version
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BS 2497-1:1968
Specification for a reference zero for the calibration of pure-tone audiometers-Data for earphone coupler combinations maintained at certain standardizing laboratories- Historical Version