In-car communication (ICC) systems help to improve communication in the vehicle between the occupants. To ensure a base level of functionality and quality of ICC systems, the international standardization body ITU-T has defined appropriate tests in Recommendation P.1150. HEAD acoustics has now implemented this recommendation as automated test sequences for the communication quality analysis software ACQUA, thus enabling comprehensive acoustic measurements of ICC systems and components in accordance with the international recommendation.
Measurements cover all relevant acoustic parameters
In combination with additional HEAD acoustics measurement equipment, the measurements implemented in the test suite cover all relevant acoustic parameters of ICC systems. Manufacturers of systems or individual components can test and optimize the effects of listening effort, acoustic stability and the signal-to-noise ratio of their devices in accordance with the standard. In addition, measurements of double talk attenuation and the delay between the original voice and the voice transmitted by the ICC system are available. The test suite P.1150 supports vehicles with A2B® technology. In conjunction with the A2B® interface of HEAD acoustics hardware platform labCORE, users can easily record background noise via A2B® and insert it digitally via the bus to test the ICC system. The ACQUA test suite also employs a technique called “Time Domain Signal Subtraction”. This method allows compensating background noise and/or unwanted speech signals in the time domain and is used to extract, for example, only the audio signals that are transmitted by the ICC system itself. In this way, users can, e.g. analyze the recorded speech without the interior noise of the vehicle.
Optimize the entire system as well as individual components
"With our automated and standards-compliant solution, manufacturers can not only optimize positioning of hands-free microphones and loudspeakers, but also tune the interaction between hardware and software components," reports Christian Schüring, Sales Manager Telecom at HEAD acoustics GmbH. "This enables optimization of communication quality of the entire ICC system as well as individual components.”
HEAD acoustics GmbH是全球领先的声音和振动分析解决方案供应商之一。我们在开发用于测量、分析和优化语音和音频质量的硬件和软件，以及客户订制解决方案和服务方面拥有专业的技术和开拓进取的精神，因此在电信领域获得全球认可。HEAD acoustics的服务范围涵盖技术产品的声音工程、环境噪声调研、语音质量工程、咨询、培训和技术支持。HEAD acoustics 位于亚琛附近，在中国、法国、印度、意大利、日本、韩国、英国、美国设有子公司，并在全球拥有众多销售合作伙伴。
