BS EN 60318-6:2008
Current
The latest, up-to-date edition.
Electroacoustics. Simulators of human head and ear Mechanical coupler for the measurement of bone vibrators
Hardcopy , PDF
English
30-09-2008
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1 Scope
2 Normative reference
3 Terms and definitions
4 Construction
4.1 General
4.2 Mechanical impedance level
4.3 Phase angle of mechanical impedance
4.4 External geometry
5 Calibration
5.1 Reference environmental conditions
5.2 Calibration procedure
5.3 Force sensitivity level
5.4 Mechanical impedance level
5.5 Temperature dependence
6 Marking and instruction manual
6.1 Marking of the mechanical coupler
6.2 Instruction manual
7 Coupling of bone vibrator to the mechanical coupler
8 Maximum permitted expanded uncertainty of measurements
Annex A (informative) - Example of a specific construction of a
mechanical coupler
Annex B (informative) - Guidance on the testing and calibration
of mechanical couplers
Annex ZA (normative) - Normative references to international
publications with their corresponding European
publications
Bibliography
Specifies a mechanical coupler for the measurement of the output force of bone vibrators. The mechanical impedance of the coupler is specified in the frequency range 125 Hz to 8000 Hz. The coupler is intended for calibration of audiometers using bone vibrators having a plane circular tip area of 175 mm[2] +/- 25 mm[2] and for determining the performance of bone conduction hearing aids.
| Committee |
EPL/29
|
| DevelopmentNote |
Supersedes BS 4009(1991) and 05/30128617 DC. (10/2008)
|
| DocumentType |
Standard
|
| Pages |
18
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
Describes a mechanical coupler for the measurement of the output force of bone vibrators. The mechanical impedance of the coupler is specified in the frequency range 125 Hz to 8 000 Hz. The coupler is intended for calibration of audiometers using bone vibrators having a plane circular tip area of 175 mm² ± 25 mm² and for determining the performance of bone conduction hearing aids. The vibratory force developed by a bone vibrator is not, in general, the same on the coupler as on a person\'s mastoid. However, the IEC recommends its use as a means for the calibration of specified vibrators used in audiometry and for the exchange of specifications and of data on bone conduction hearing aids. This standard cancels and replaces IEC 60373 published in 1990. This first edition constitutes a technical revision.
| Standards | Relationship |
| IEC 60318-6:2007 | Identical |
| EN 60318-6:2008 | Identical |
| ISO/IEC Guide 98:1993 | Guide to the expression of uncertainty in measurement (GUM) |
| ISO 266:1997 | Acoustics — Preferred frequencies |
| IEC 60645-1:2017 | Electroacoustics - Audiometric equipment - Part 1: Equipment for pure-tone and speech audiometry |
| IEC 60118-9:1985 | Hearing aids. Part 9: Methods of measurement of characteristics of hearing aids with bone vibrator output |
| ISO 389-3:2016 | Acoustics Reference zero for the calibration of audiometric equipment Part 3: Reference equivalent threshold vibratory force levels for pure tones and bone vibrators |
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