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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