BS 6951:1988
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Specification for threshold of hearing by air conduction as a function of age and sex for otologically normal persons
Hardcopy , PDF
15-08-2000
English
29-02-1988
National foreword
Committees responsible
Specification
0 Introduction
1 Scope and field of application
2 References
3 Definitions
4 Specification
Annexes
A Numerical example to illustrate the procedure
B Selected values of median threshold shift and of
statistical distribution
Tables
1 Values of the coefficient alpha used to determine the
median value of hearing threshold deviation for an
otologically normal population of given age
2 Values of the parameters bu and bl used to determine
respectively the upper and lower parts of the
statistical distribution of hearing threshold levels,
centred on the median value, for an otologically
normal population of given age
3 Values of the multiplier k
4 Values, rounded to the nearest whole decibel, of
hearing threshold deviation at frequencies from 125
to 8 000 Hz, expressed relative to the median hearing
threshold level at 18 years of age, that can be
expected to be exceeded by fractions from 0,1 to 0,9
(10 to 90 %) of otologically normal groups of males
and females, at intervals of 10 years of age from 20
to 70 years
Bibliography
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