Ear simulator
4157
Bruel and Kjaer
The Ear Simulator consists of a main housing into which are assembled a number of rings whose shapes form annular air volumes connected to the main volume of the housing by air passages. The main ear canal volume is of a similar shape and volume to that of the actual human ear and provides a similar acoustic impedance to the insert earphone being tested. A ½" microphone is mounted in the housing of the Ear Simulator, terminating the main ear canal volume. Preamplifier Type 2669 is supplied with the set.
Uses
Frequency response, sensitivity and distortion measurements on insert earphones, e.g. used in hearing aids, operator headsets, etc.
Servicing of hearing aids
Production testing of earphones
Features
Conforms to IEC 60318-4 (2010), ANSI 3.25 (2009) and ITU-T Rec. P.57 Type 2
Simple and straightforward calibration procedure
Well defined measuring conditions
Individually calibrated
Wide range of accessories included
Uses
Frequency response, sensitivity and distortion measurements on insert earphones, e.g. used in hearing aids, operator headsets, etc.
Servicing of hearing aids
Production testing of earphones
Features
Conforms to IEC 60318-4 (2010), ANSI 3.25 (2009) and ITU-T Rec. P.57 Type 2
Simple and straightforward calibration procedure
Well defined measuring conditions
Individually calibrated
Wide range of accessories included
