What is BS EN 60318-1-Ear simulator for the measurement of supra-aural and circumaural earphones about?
BS EN 60318 is a European standard on electroacoustics that discusses the simulators of the human head and ear to improve the acoustical performance of supra-aural earphones.
BS EN 60318-1 is the first part of the BS EN 60318 series that specifies an ear simulator for the measurement of supra-aural and circumaural earphones (used for example in audiometry and telephonometry) applied to the ear without acoustical leakage, in the frequency range from 20 Hz to 10 kHz. The same device can be used as an acoustic coupler at additional frequencies up to 16 kHz.
Note1: The ear simulator has alternative configurations for supra-aural earphones and different types of circumaural earphones. In practice, the alternative configurations can be realised using adapters where necessary.
Note2: Repeatability for supra-aural and circumaural earphones may get significantly worse above 10 kHz.
Who is BS EN 60318-1-Ear simulator for the measurement of supra-aural and circumaural earphones for?
BS EN 60318-1 on the ear simulator for the measurement of supra-aural and circumaural earphones is useful for:
- Ear simulators manufacturers
- Ear simulator tester
- Ear phone manufacturers
- Occupational health and safety departments
- Quality assurance departments
Why should you use BS EN 60318-1-Ear simulator for the measurement of supra-aural and circumaural earphones?
The ear simulator is a device for measuring the acoustic output of sound sources where the sound pressure is measured by a calibrated microphone coupled to the source so that the overall acoustic impedance of the device approximates that of the normal human ear at a given location and in each frequency band.
BS EN 60318-1 provides you with guidance on construction, coupling of the earphone to ear simulator, calibration, the maximum permitted expanded uncertainty of measurements, lumped-parameter electrical network analogue of the ear simulator, measurement method for the determination of the acoustical transfer impedance of the ear simulator, etc. This will help you in the calibration of supra-aural earphones and circumaural earphones used in audiometry.
The dimensions and methods provided by BS EN 60318-1 assist you in improving the performance and quality of the ear simulator and ensuring the accuracy of supra-aural earphones and circumaural earphones.
With obedience and compliance to BS EN 60318-1, you can enhance the quality of the ear simulator, enable quality mass production, and manufacture a standardized product.
What is changed since the last update?
BS EN 60318-1:2009 supersedes EN 60318-1:1998 and EN 60318-2:1998, which is withdrawn. BS EN 60318-1:2009 has made some technical changes compared to the previous editions EN 60318-1:1998. These include:
- An extension of the frequency range to 16 kHz
- A revised specification for the acoustical transfer impedance, including tolerances
- A method for measuring the acoustical transfer impedance
- Expanded measurement uncertainties