HMS II.6 – Fullband artificial head with free-field microphones

The fullband artificial head HMS II.6 is ideally suited for all acoustical... 

The fullband artificial head HMS II.6 is ideally suited for all acoustical far-to-the-ear measurements of voice and audio quality. It is capable of measuring sound sources far-to-the-ear like automotive hands-free devices, smart speaker or conference phones in sending and receiving direction. The head and torso simulator provides geometric and acoustic characteristics according to recommendation ITU-T P.58 and thus replicates all acoustically relevant structures of the human anatomy.

HMS II.6 supports measurements in sending and receiving direction. For this purpose, the artificial head is equipped with a two-way mouth loudspeaker and two low-noise free-field microphones (left and right ear). Since no impedance simulation is conducted, this version of the artificial head is not suited for measurements of sound sources close-to-the-ear such as headphones, headsets, and handsets. With HMS II.6, users can create aurally-accurate voice and audio recordings for analysis with the measurement and analysis software ACQUA. The artificial mouth reproduces the complete spectrum of human voice, allowing narrowband, wideband, super-wideband and even fullband measurements.

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The fullband artificial head HMS II.6 is ideally suited for all acoustical far-to-the-ear measurements of voice and audio quality. It is capable of measuring sound sources far-to-the-ear like automotive hands-free devices, smart speaker or conference phones in sending and receiving... 

The fullband artificial head HMS II.6 is ideally suited for all acoustical far-to-the-ear measurements of voice and audio quality. It is capable of measuring sound sources far-to-the-ear like automotive hands-free devices, smart speaker or conference phones in sending and receiving direction. The head and torso simulator provides geometric and acoustic characteristics according to recommendation ITU-T P.58 and thus replicates all acoustically relevant structures of the human anatomy.

HMS II.6 supports measurements in sending and receiving direction. For this purpose, the artificial head is equipped with a two-way mouth loudspeaker and two low-noise free-field microphones (left and right ear). Since no impedance simulation is conducted, this version of the artificial head is not suited for measurements of sound sources close-to-the-ear such as headphones, headsets, and handsets. With HMS II.6, users can create aurally-accurate voice and audio recordings for analysis with the measurement and analysis software ACQUA. The artificial mouth reproduces the complete spectrum of human voice, allowing narrowband, wideband, super-wideband and even fullband measurements.

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Highlights

  • HMS II.6 is the cost-effective alternative to HMS II.3 for conducting far-to-the-ear measurements in sending and receiving direction
  • The fullband artificial head is equipped with two low-noise free-field microphones for binaural recordings
  • The artificial mouth and geometrical dimensions of the artificial head are compliant with recommendation ITU-T P.58

Applications

  • Measurements in sending and receiving direction of sound sources far-to-the-ear
  • Voice quality and audio quality testing of e.g.:
    • In-vehicle applications like hands-free terminals, in-car communication (ICC) systems, infotainment systems, emergency call (eCall) devices
    • Voice-controlled smart home devices like smart speakers and other IoT devices
    • Conference phones and hands-free devices

 

 

Features

Artificial free-field ears:

  • HMS II.6 is equipped with simplified pinna simulator and two high-sensitivity, low-noise free-field microphones
  • The artificial ears provide a transmission range from 3 Hz to 20 kHz

Artificial mouth:

  • The artificial mouth with its two-way loudspeaker design transmits equalized speech signals from 50 Hz up to 20 kHz – from narrowband to fullband
  • The two-way mouth simulator of the artificial head also reproduces high speech levels with low distortion
  • Acoustic properties of the two-way mouth exceed the requirements of the recommendation ITU-T P.58
  • Automated and comfortable equalization of the two-way mouth simulator is supported in the measurement and analysis software ACQUA
     
  • Depending on the application, users can mount the artificial head on the height-adjustable tripod HMT III or on the torso box HTB VI

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