4128-C Bruel & Kjaer Head and Torso Simulator (HATS) Vibration and Sound



  • Head and Torso Simulator (HATS)
  • Complies with ITU-T Rec. P.58, IEC60959 and ANSIS3, 36-1985
  • Highly representative mouth simulator with overload protection
  • Supplied standardised Right Ear Simulator Type 4158C fulfils ITU-T P.57 and IEC60711
  • Optional Left Ear Simulator Type 4159C
    Note: Type 4159 C can be fitted to Head and Torso Simulators with serial number 1947214 or higher (from February 1997)
  • Adjustable neck angle for realistic hands-free telephone measurements
  • Supports almost all telephone handset designs, including handsets with antennas and asymmetrically mounted transducers.
  • Positioning on both ears for left- and right-handed user simulations.
  • Ear-centered reference point allow easy 3-D pivoting of telephone mouthpiece.

The Bruel & Kjaer 4128-C Head and Torso Simulator is a mannequin with built-in ear and mouth simulators that provides a realistic reproduction of the acoustic properties of an average adult human head and torso. It is ideal for performance in-situ electroacoustic tests on:

  • Telephone handsets (including mobile and cordless)
  • Headsets
  • Audio conference devices
  • Microphones
  • Headphones
  • Hearing aids
  • Hearing protectors

Handset Positioner Type 4606 allows accurate and repeatable mounting of telephone handsets on HATS in both standardized and user-defined positions. This makes HATS into a state-of-the-art telephone test rig providing both an artificial mouth and ear with pinna for measurements according to ITU-T recommendations.

More Information
ManufacturerBruel & Kjaer
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