Abstract： IEC 60318-2:1998 pdf free download.Electroacoustics - Simulators of human head and ear -Part 2: An interim acoustic coupler for the calibration of audiometric earphones in the extended high-frequency range. IEC 60318-1,— Electroacoustics —...

IEC 60318-2:1998 pdf free download.Electroacoustics - Simulators of human head and ear -Part 2: An interim acoustic coupler for the calibration of audiometric earphones in the extended high-frequency range.

IEC 60318-1,— Electroacoustics — Simulators of human head and ear — Part 1: Ear simulator for the calibration of supra-aural earphones 1)

IEC 60645-4:1994, Audiometers — Part 4: Equipment for extended high-frequency audiometry

IEC 61094-1:1992. Measurement microphones — Part 1: Specifications for laboratory standard microphones

IEC 61094-4:1995, Measurement microphones — Part 4: Specifications for working standard microphones

ISO/TR 389-5:1998, Acoustics — Reference zero for the calibration of audiometric equipment — Part 5: Reference equivalent

threshold sound pressure levels for pure tones in the frequency range8kHzto 16kHz

3 Microphone

The microphone in the IEC 60318-1 ear simulator shall conform to the dimensions of a Type LS2aP microphone given in lEG 61094-1

figure 1. For example, conformance may be achieved by replacing the protective grid of a Type WS2P (IEC 61094-4) microphone with an adapter ring so that this microphone with adapter ring conforms to the dimensions specified for Type LS2aP.

NOTE — If a grid is used, correction values should be stated for the difference between measurements with and without the grid.

Recommended：