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BS 7113:1989
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 reference levels for narrow-band masking noise
Hardcopy , PDF
15-03-1995
English
29-09-1989
Reference levels for calibration of narrow-band masking noise presented by air conduction from an earphone in pure tone audiometry. Data are given for noise bandwidths of one-third and one-half octaves.
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