Rec. ITU-T P.57 (03/1993) … ARTIFICIAL EARS
FOREWORD
CONTENTS
1 Scope
2 Object
3 Definitions
4 Artificial Ear types
    4.1 Type 1 - IEC 318
    4.2 Type 2 - IEC 711
    4.3 Type 3
        4.3.1 Type 3.1 - Concha bottom simulator
        4.3.2 Type 3.2 - Simplified pinna simulator
        4.3.3 Type 3.3 - Pinna simulator
        4.3.4 General requirements
        4.3.5 Calibration of the Artificial Ear
        4.3.6 Atmospheric reference conditions
        4.3.7 Earphone placement
        4.3.8 DRP-ERP transfer function