ITU-T P.1120, Measurement Standard for Super Wideband & Full Band In-Vehicle Hands-Free Terminals
Achieving appropriate voice quality for in-vehicle hands-free calls is a challenging task under difficult acoustic conditions. To ensure good call quality, the ITU-T has published Recommendation ITU-T P.1120 regarding testing and requirements for super wideband and full-band hands-free calls in vehicles. This testing method focuses on key voice quality criteria such as frequency characteristics and loudness ratings in single speaker situations, echo performance, level variations in single speaker and double talk situations, and the transmission quality of background noise. HEAD acoustics has implemented and commercialized all test cases based on the recommendation as the ACQUA standard P.1120. The ACQUA standard P.1120 is used to verify and optimize whether hands-free systems and devices, either OEM or aftermarket, manufactured by car manufacturers and automotive parts suppliers comply with ITU-T Recommendation P.1120.
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basic information
Automated ACQUA standard for evaluating super wideband and full band voice quality of in-vehicle hands-free calling systems and devices. Supports testing of OEM and aftermarket hands-free systems, as well as wired and wireless headsets used in vehicles. State-of-the-art measurement methods for voice quality analysis. Supports A2B for recording background noise and digital insertion.
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Automatic voice quality analysis of super wideband and full-band in-vehicle hands-free terminals in accordance with ITU-T Recommendation P.1120 Experimental development and optimization of in-vehicle hands-free terminals based on objective audio quality evaluation Optimization of the mounting positions of hands-free microphones and speakers inside the vehicle cabin
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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.
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