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Acoustic Coupler for Headphone Calibration



Dear List !

I have two questions concerning calibration of headphones.
1) What is (are) the coupler size(s) specified in an IEC 318 artificial
ear for circumaural headphones?
2) Is this fulfilled by the Bruel&Kjaer 4153 artificial ear, which has
either 1.8, 2.5 or 7.5 cm2 ?

Mag. Dr. Bernhard Laback
Acoustics Research Department
Austrian Academy of Sciences
Liebigg. 5, A-1010 Wien,
Austria
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MZ