CONTENTS

 1     Scope
 2     References
 3     Definitions
        3.1     Terms defined elsewhere
        3.2     Terms defined in this Recommendation
 4     Abbreviations and acronyms
 5     Conventions
 6     Description of the object
 7     Physical dimensions of the head and torso simulator
        7.1     Torso
        7.2     Head
        7.3     Pinna
 8     Acoustic characteristics
        8.1     Sound pick-up
                  8.1.1     Measurement conditions
                  8.1.2     Free-field frequency response
                  8.1.3     Diffuse-field frequency response
                  8.1.4     Monaural frequency response of the HATS
                  8.1.5     Sound leakage
        8.2     Sound generation
                  8.2.1     Normalized free-field response
                  8.2.2     Normalized obstacle diffraction
                  8.2.3     Maximum deliverable sound pressure level
                  8.2.4     Distortion
                  8.2.5     Linearity
        8.3     Composite characteristics
                  8.3.1     Free-field plane wave diffraction at the MRP
                  8.3.2     Diffuse-field diffraction at the MRP
                  8.3.3     Mouth to ear crosstalk
 9     Miscellaneous
        9.1     Calibration of the artificial ears
        9.2     DRP-ERP transfer function
        9.3     Stray magnetic field
        9.4     Atmospheric reference conditions
        9.5     Markings and calibration fixtures
        9.6     Delivery conditions
        9.7     Materials
        9.8     Stability
Annex A  Interpolated 12th octave diffuse-field response
Bibliography