1 Scope
and object
1.1 Scope
1.2 Object
2 References
3 Definitions
3.1 Terms defined elsewhere
3.2 Terms defined in this Recommendation
4 Abbreviations and acronyms
5 Conventions
6 Artificial ear types
6.1 Type 1 artificial ear
6.2 Type 2 artificial ear
6.3 Type 3 artificial ear
6.4 Type 4 artificial ear
6.5 Calibration of the artificial ears type 1 and type 3.2
6.6 Performance verification of the artificial ears types 2, 3.1,
3.3 and 3.4
6.7 Atmospheric reference conditions
6.8 General requirements
6.9 Ear-drum reference point to ear reference point correction
Annex A – A practical procedure for determination of the acoustic input
impedance of artificial ears
A.1 Introduction
A.2 Calibration of the impedance probe
A.3 Artificial ear calibration
Annex B – Cross sectional areas of type 4.3 pinna simulator
B.1 Cross sections of the concha bottom
B.2 Cross sectional areas of the ear canal and concha bottom
B.3 Cross sectional areas of the pinna simulator
Appendix I – Comparative acoustical input impedance measurements on the
artificial ears Types 3.3 and 3.4 and on human ears
I.1 Introduction
I.2 Data overview
I.3 Artificial ear measurements
I.4 Human ear measurements
I.5 Comparison between human and artificial ear
measurements
Appendix II – Illustration of the mobile phone-shaped impedance probe used in
Appendix I
Appendix III – Influence of cross-sectional density on the acoustical transfer
impedance of type 4.3 ear simulator
III.1 Introduction
III.2 Interpolation method used for connection of cross sections
III.3 Influence of cross-sectional density on acoustic transfer
impedance
III.4 COMSOL Model Setup
Bibliography