Suspected mouse, low-noise right ear simulator, equipped with a human ear canal. Ideal for measuring any intra-concha or insert-type devices!
HMS II.3 LN HEC is a dummy head that is ideal for low noise measurements in the field of telephony under realistic conditions. It is equipped with pseudo ears, a human-like external ear canal, and a pseudo mouth. It conforms to the shape and acoustic characteristics requirements of ITU-T Recommendation P.57 and ITU-T Recommendation P.58, making it suitable for measurement scenarios in the vicinity of the ear as well as sound fields away from the ear. It can be used for testing transducers and signal processing for handsets, headsets, headphones, hands-free devices, voice-operated devices, hearing protection devices, and more.
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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 Ear simulator: › Anatomically shaped pinna, human-like ear canal, right ear simulator › High-sensitivity condenser microphone characterized by a very low inherent noise floor and high upper limit › Pinna simulator compliant with ITU-T Recommendation P.57 › 4.4-type pinna simulator compliant with ITU-T Recommendation P.57 › TEDS support (IEEE 1451.4 Class MMI) Pseudo mouse: › Low distortion, two-way design with an 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 subjects: › In-ear headphones / in-ear headsets › Hearing aids › Active / passive hearing protection devices › Idle noise of (in-ear) ANC devices › Background noise level in a quiet environment › Total harmonic distortion
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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.