1
Scope
2 Normative references
3 Definitions and abbreviations
3.1 Definitions
3.2 Abbreviations
4 Test arrangement
4.1 General
4.2 Positioning of the HATS
4.2.1 Desktop hands-free
4.2.2 Other types of hands-free terminals
5 Acoustic characteristics
5.1 Sound pick-up
5.2 Calibration of the artificial
mouth of the HATS
5.3 Equalization of HATS for test of
receiving characteristics
5.4 Combination of left and right ear
receiving sensitivity
6 Application of HATS for subjective
evaluation procedures