CONTENTS

 1     Scope and object 
        1.1     Scope     
        1.2     Object    
 2     Normative references      
 3     Definitions
 4     Abbreviations  
 5     Artificial ear types           
        5.1     Type 1 – IEC 60318          
        5.2     Type 2 – IEC 60711          
        5.3     Type 3    
        5.4     Calibration of the artificial ears Type 1 and Type 3.2       
        5.5     Performance verification of the artificial ears Type 2, Type 3.1, Type 3.3 and Type 3.4    
        5.6     Atmospheric reference conditions
        5.7     General requirements        
        5.8     DRP to ERP 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   
Appendix I – Comparative acoustical input impedance measurements on the artificial ears Type 3.3 and Type 3.4 and on real 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    
Bibliography