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 artificial head realistically 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.

In order to enable narrowband, wideband, super-wideband and even fullband measurements in sending direction, the artificial mouth of HMS II.6 reproduces the complete spectrum of the human voice. The ear simulators provide aurally-accurate voice and audio recordings for evaluation with the measurement and analysis software ACQUA.

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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 artificial head realistically 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.

In order to enable narrowband, wideband, super-wideband and even fullband measurements in sending direction, the artificial mouth of HMS II.6 reproduces the complete spectrum of the human voice. The ear simulators provide aurally-accurate voice and audio recordings for evaluation with the measurement and analysis software ACQUA.

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Highlights

  • HMS II.6 is the cost-effective alternative to HMS II.3 for conducting measurements far-to-the-ear
  • The artificial head is equipped with two low-noise free-field microphones for binaural recordings
  • HMS II.6 is suitable for aurally-accurate super-wideband and fullband measurements in sending and receiving direction
  • 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

  • HMS II.6 is equipped with a two-way mouth loudspeaker, a simplified pinna simulator and two low-noise free-field microphones
  • The ear simulators of the artificial head provide a transmission range from 3 Hz to 20 kHz
  • With equalization, HMS II.6 transmits speech signals from 50 Hz up to 20 kHz
  • The mouth simulator of the artificial head is able to play back high speech levels with low distortion
  • The measurement and analysis software ACQUA enables to equalize the two-way mouth simulator automated and comfortably
  • Depending on the application, users can mount the artificial head on the height-adjustable tripod HMT III or on the torso box HTB VI

Relevant Products

Telecom & Audio
ACQUA
(6810)
Telecom & Audio
VoCAS
(6985)
Modular & Scalable
labCORE
(7700)
Directional
HRT I
(6498)
Artificial Heads
HMS II.3
(1230)
Artificial Heads
HMS II.3-LN
(1230.3)
Background Noise Simulation
MSA I and MSA II
(6487, 6487.2)