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  News, Events & Publications    HMS II.3: HEAD acoustics artificial head measurement system fully capable for super-wideband testing
HEAD News Herzogenrath (Germany), July 18, 2017
HMS II.3: HEAD acoustics artificial head measurement system fully capable for super-wideband testing
In more and more applications, super-wideband technology plays an increasingly important role: The upcoming generation of VoLTE mobile phones as well as already established voice messenger systems such as Skype™ or Apple FaceTime® support super-wideband. In order to test corresponding terminals accordingly, high-performance measurement equipment is essential. With HMS II.3, HEAD acoustics provides a high-quality artificial head measurement system, comprising ear simulator and artificial mouth, which is fully capable for super-wideband testing in sending and receiving direction. In its basic version, the artificial head is equipped with an artificial mouth and with an impedance simulator in the right ear – optionally also the left ear can be equipped with an ear simulator. HMS II.3 complies with all relevant international standards.
Artificial head measurement system transmits real speech equalized up to almost 20 kHz
The artificial mouth of the HMS II.3 transmits real speech equalized at least up to almost 20 kHz. Considering the frequency range of real speech signals, the mouth of the artificial head measurement system is able to play back the complete spectrum of human voice for all relevant levels with low distortion. This is a main feature to enable super-wideband measurements in sending direction. With the help of the communication quality analysis system ACQUA, the artificial mouth can be comfortably equalized via a digital FIR filter which is tuned by an automated and fast equalization process.
  HMS II.3: Artificial head measurement system

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  The artificial head measurement system HMS II.3 is super-wideband capable and therefore perfectly suited for e.g. testing the upcoming generation of VoLTE mobile phones

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  HMS II.3 is used for vehicle applications e.g. for measuring the speech quality of hands-free systems

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Steffen Scholz
HEAD acoustics GmbH
Ebertstr. 30a,
D-52134 Herzogenrath
Phone: +49 (0) 2407 577 744
Fax: +49 (0) 2407 577 99
About HEAD acoustics GmbH – Telecom Division:
HEAD acoustics was founded in 1986 and has been involved in noise and vibration, electroacoustic and voice quality testing since its inception. HEAD acoustics is based in Herzogenrath, Germany, with affiliates in France, Great Britain, Japan, South Korea and USA as well as a world-wide network of representatives. The Telecom Division of HEAD acoustics manufactures telecom test equipment and provides consulting services in the field of speech and audio quality. Moreover, HEAD acoustics closely co-operates with DECT Forum, ETSI, ITU-T, 3GPP, TIA, CTIA, GSMA and other standardization bodies with regard to the development of quality standards for voice transmission and speech communication. In many partnership projects, HEAD acoustics has proven its competence and capabilities in conducting tests and optimizing communication products with respect to speech and audio quality under end-to-end as well as mouth-to-ear scenarios.
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Ebertstraße 30a
52134 Herzogenrath

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