Handsets, headsets, headphones, earphones, hearing protection products, hearing aids, etc. are ideal for measuring transducers that are close to the ear.
HMS II.3 is a dummy head equipped with a pseudo-mouse and a right ear simulator. Because HMS II.3 realistically mimics the anatomical structures related to human acoustics, it can also be used for measurements with transducers that are positioned away from the ear, such as hands-free devices.
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basic information
Shape and acoustic characteristics compliant with ITU-T Recommendation P.58 Modular design that allows for easy retrofitting of compatible components Shape of head and torso simulator compliant with IEC 60318-7 Ear simulator: › Anatomically shaped pinna for comprehensive measurements in both close and far-field sound fields › Ear simulator compliant with IEC 60318-4 › Pinna simulator compliant with IEC 60318-7 › 3.3 type pinna simulator compliant with ITU-T Recommendation P.57 › High-quality condenser microphone characterized by low inherent noise floor and high upper limit › TEDS support (IEEE 1451.4 Class MMI) Pseudo mouse: › Low distortion 2-way design with ultra-wide frequency range (up to full band) › Acoustic characteristics compliant with ITU-T Recommendation P.58 › Digital equalization by ACQUA
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Applications/Examples of results
Measurement target examples: › Handset › Telephone terminal equipment › Headsets and headphones › Hands-free devices › Voice-operated equipment › Active / passive hearing protection 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.