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[(350850)TYPE 2][(350853)TYPE 1] TYPE 1: Sound test fixture
TYPE 2: Basic in ear test + software
IEc711 simulation ear adopts iec-711 human ear simulator as the coupling cavity, which is used to couple the headset with the human ear by earplugs for acoustic measurement;
Meet the following criteria:
IEC 60318-4:2010 Ed.1.0 (formerly IEC 60711) Electroacoustics - human ear and head simulator, Part 4: plug in ear simulator for measuring plug-in headphones;
SJ / T 10659-1995 plugged ear simulator for measuring plug-in headphones;
ITU-T Recommendation p.57, type 2 Simulation ear
Technical parameters of iec711 simulation ear
Executive standard ITU ? t p.57 sec 5.2 type 2 recommendations and iec60318-4
Frequency range 100Hz-10KHz ¡¾ 1dB (analog human ear impedance)
Frequency range of coupling cavity: 20hz-16khz (for coupling cavity)
ñ«é©Ðü?àõÒö:
1,?áãÛõ?:20Hz~20000Hz;
2,?áã??:le;plusmn;1dB#xff08;20Hz~14000Hz#xff09;,le;plusmn;2dB#xff08;10000Hz~20000Hz#xff09;;
3,ݬùê?ñ×:IEC60711,ITU-T P.57 Ëï??,SJ/Z9150-1987;
ì¤ù»?é»?ê¹éÍIEC?ñ×ÙþËì
1 Scope
This part of IEC 60318 specifies an ear simulator for the measurement of supra-aural and
circumaural earphones #xff08;used for example in audiometry and telephonometry#xff09; 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.
NOTE 1 This device has alternative configurations for supra-aural earphones and different types of circumaural
earphones. In practice, the alternative configurations can be realised through the use of adapters where necessary.
NOTE 2 Repeatability for supra-aural and circumaural earphones may get significantly worse above 10 kHz.
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