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China Shenzhen Baichuan electronics Co., LTD

Professional manufacturer of acoustic test instruments.


Ear simulator/

CRY711 Ear simulator/coupler

1、Compliance with IEC 60318-4:2010 Occluded - ear simulator for the measurement of earphones coupled to the ear by means of ear inserts

2、Compliance with ITU-T Rec. P.57(2011) Type 2

3、Compliance with SJ/T 10659-1995 Occluded-ear simulator for the measurement of earphones coupled to the ear by ear inserts

Frequency Response Curve of CRY711 Ear Simulator

1、Elaborate design, sophisticated materials and precision manufacturing ensure excellent product consistency.

2、With the built-in CRY372 pressure-field pre-polarization measurement microphone, it can give its performance into full play.

Technical specification
CRY711 Ear Simulator / Coupled Cavity
Applicable Standards IEC 60318-4(IEC60711)

ITU-T Rec. P.57 Type 2

Resonant frequency 13.5kHz±1kHz
Frequency range (±1 dB) 100Hz~10kHz (stimulating human ear impedance)
Frequency range 20Hz~16kHz (for coupled cavity)
Height 23mm (excluding microphone)
Diameter 23.77mm
Weight 45g (excluding microphone)
Exampled of Options & Configuration Checklist



Example Example 1 Example 2 Example 3

CRY502 (traditional DB9 port)

CRY506 (ICP, BNC port)

CRY508 (ICP, BNC port) CRY509 (traditional aviation plug)
Connection mode Preamplifier with cable BNC-specific cable Aviation plug-specific cable

  • Product Detail
  • After-sales services

Ear simulator/coupler is a device that simulates the physical characteristics of the human ear. It includes a microphone and an acoustic network with a structure similar to the acoustic characteristics of the human external ear. It is used to make quantitative and qualitative evaluations of the performance of headphone equipment.

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