BS EN 60318-4:2010
Current
The latest, up-to-date edition.
Electroacoustics. Simulators of human head and ear Occluded-ear simulator for the measurement of earphones coupled to the ear by means of ear inserts
Hardcopy , PDF
English
31-07-2010
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1 Scope
2 Normative references
3 Terms and definitions
4 Construction
5 Calibration
6 Coupling of earphones and hearing aids to the
occluded-ear simulator
7 Maximum permitted expanded uncertainty of measurements
Annex A (informative) - Example of one specific design of
occluded-ear simulator
Annex B (informative) - Principle of calibration for the
occluded-ear simulator
Annex ZA (normative) - Normative references to international
publications with their corresponding European
publications
Bibliography
Specifies an occluded-ear simulator intended for the measurement of insert earphones in the frequency range from 100 Hz to 10000 Hz.
| Committee |
EPL/29
|
| DevelopmentNote |
Supersedes BS 6310(1982) & 06/30160356 DC. (07/2010)
|
| DocumentType |
Standard
|
| Pages |
24
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
IEC 60318-4:2010 describes an occluded-ear simulator intended for the measurement of insert earphones in the frequency range from 100 Hz to 10 000 Hz. It is suitable for air conduction hearing aids and earphones, coupled to the ear by means of ear inserts e.g. ear moulds or similar devices. The occluded-ear simulator is also suitable as the basis for an extension intended to simulate the complete ear canal and the outer ear (for instance in head simulators). The occluded-ear simulator simulates the acoustic transfer impedance for the occluded normal adult human ear. However, it does not simulate the leakage between an earmould and a human ear canal; therefore, the results obtained with the occluded-ear simulator may deviate from the performance of an insert earphone on a real ear, especially at low frequencies. Moreover, large performance variations among individual ears will occur which should be considered when using the ear simulator. Above 10 kHz the device does not simulate a human ear, but can be used as an acoustic coupler at additional frequencies up to 16 kHz. Below 100 Hz, the device has not been verified to simulate a human ear, but can be used as an acoustic coupler at additional frequencies down to 20 Hz. IEC 60318-4:2010 cancels and replaces IEC 60711, published in 1981 and constitutes a technical revision. The main changes with respect to the previous edition are listed below:
- extension of the usable frequency range to 100 Hz - 16 000 Hz;
- addition of values of maximum permitted expanded uncertainties to all tolerances.
| Standards | Relationship |
| IEC 60318-4:2010 | Identical |
| EN 60318-4:2010 | Identical |
| ANSI/ASA S3.7 : 2016 | METHOD FOR MEASUREMENT AND CALIBRATION OF EARPHONES |
| EN 61094-4:1995 | Measurement microphones - Part 4: Specifications for working standard microphones |
| IEC 61094-4:1995 | Measurement microphones - Part 4: Specifications for working standard microphones |
| EN ISO 389-2:1996 | Acoustics - Reference zero for the calibration of audiometric equipment - Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones (ISO 389-2:1994) |
| ISO 389-5:2006 | Acoustics Reference zero for the calibration of audiometric equipment Part 5: Reference equivalent threshold sound pressure levels for pure tones in the frequency range 8 kHz to 16 kHz |
| EN ISO 389-5:2006 | Acoustics - Reference zero for the calibration of audiometric equipment - Part 5: Reference equivalent threshold sound pressure levels for pure tones in the frequency range 8 kHz to 16 kHz (ISO 389-5:2006) |
| EN ISO 389-6:2007 | Acoustics - Reference zero for the calibration of audiometric equipment - Part 6: Reference threshold of hearing for test signals of short duration (ISO 389-6:2007) |
| ISO 389-6:2007 | Acoustics Reference zero for the calibration of audiometric equipment Part 6: Reference threshold of hearing for test signals of short duration |
| ISO 389-2:1994 | Acoustics Reference zero for the calibration of audiometric equipment Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones |
| ISO/IEC Guide 98-3:2008 | Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) |
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