We will record a three-dimensional sound scenario and simulate playback of background noise using the recorded data.
MSA I is a microphone array designed to capture three-dimensional sound scenarios. The microphone array is asymmetrical. It fits the dummy head and stand of the HMS II series. The data recorded with MSA I is played back using the background noise simulation systems: 3PASS lab and 3PASS flex. Equalization is required for background noise simulation using the recording data from MSA I. This equalization procedure includes recording the impulse response and test signals with MSA I. The recorded data of the impulse response and test signals is taken into account for the equalization calculations.
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basic information
Microphone array compliant with ETSI TS 103 224 Asymmetrical array with most microphones positioned to the right of the microphone location of the test device Recording of background noise scenarios Control by 3PASSlab or 3PASSflex Automatic digital equalization by 3PASS lab/3PASS flex according to the speaker configuration specified in ETSI TS 103 224 Placement of eight microphones in the defined sweet spot for optimal playback of the recorded signal Fine-tuning of positions for optimization and verification of equalization (10° clockwise rotation)
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Applications/Examples of results
Recording and equalization of background noise scenarios › Handheld › Handheld hands-free › Desktop hands-free
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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.