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Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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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
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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
For the frequency range 125 to 8000 Hz and for groups of otologically normal persons of a given age within the limit of 18 to 70 years inclusive, gives the expected value of median hearing threshold shift relative to a group aged 18 years and the expected statistical distribution above and below the median value.
| Committee |
EH/1
|
| DevelopmentNote |
REPLACES BS 3383:1961. AMD 7341 implements EN 27029: 1991 as a British Standard.
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| ISO 7029:2017 | Identical |
| 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 |
| BS 2497-6:1988 | Acoustics. Reference zero for the calibration of audiometric equipment Specification for a standard reference zero using an artificial ear complying with BS 4669 |
| 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 |
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