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BS 2497-4:1972
Superseded
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Specification for a reference zero for the calibration of pure-tone audiometers Normal threshold of hearing for pure tones by bone conduction
Available format(s)
Hardcopy
Superseded date
23-07-2013
Language(s)
English
Published date
25-07-1972
Publisher
Specifies value of acceleration corresponding to the audiometric zero for bone conduction listening to pure tones.
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