It is a motor-driven device for moving the handset to the specified position according to standard specifications.
HHP IV is a motor-driven device designed to move the handset to a specified position. It is equipped with a fixture to secure the handset. Using the included electric motor, it can move the handset to any position near or above the ears of the dummy head in the HMS series. HHP IV supports the standard test position (STP) based on ITU-T Recommendation P.64, as well as the recommended test positions (RTP) specified in IEEE 269 and ITU-T Recommendation P.64. Additionally, it allows for the adjustment of the pressing force of the handset against the ear of the dummy head.
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basic information
Fully automatic placement of the handset on the ears of the HMS II series dummy head Placement of the handset along the coordinate system of ITU-T Recommendation P.64 using the six-legged kinematics of HHP IV Automatic recording of the fixed position and pressing force of the handset with ACQUA Remote control via ACQUA Compatible with all dummy heads in the HMS II series after initial calibration Manual control via touch panel
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Applications/Examples of results
Optimal for use with Dummy Head HMS II.3, HMS II.3 LN, HMS II.3 LN HEC, HMS II.3 ViBRIDGE, HMS II.4, and HMS II.5 Fully automated and reproducible voice quality testing, examples: › Smartphones (with and without display speakers) › Cordless phones › Handset-equipped communication devices › Tablets Analysis of robustness concerning position The impact of user behavior on the speech quality in the transmission and reception directions of the tested devices.
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Company information
HEAD acoustics Japan Co., Ltd. has been active as a leading company in the fields of dummy head-related recording and playback systems, acoustic analysis based on human auditory characteristics, and communication measurement technology for over 25 years. HEAD acoustics has consistently been a pioneer in developing innovative technologies such as dummy head-related binaural technology, acoustic analysis related to human hearing, interactive sound simulation systems, and transmission path analysis. HEAD acoustics will continue to focus on research and development through collaboration with universities and other research institutions and participation in international research projects.
