测试Of Hands-Free Devices

Acoustic performance of smartphones and communication devices is key to end-user acceptance and compliance with network standards.Users demand high audio quality，so designs must go through voice testing to ensure quality and intelligibility。

要求，要求

When evaluating the acoustic performance of hands-free communication devices，it is important to take into consideration the surroundings，as well as the acoustic influence of the head and body.In addition to traditional parameters for characterization of communication devices，such as frequency response，loudness and rectivity， it is necessary to determine transmission quality in the presence of background noise，switching，and echo cancelling，as these are known to have close correlation with the audio performance and perceived quality of the human voice of hands-free equipment。

系统套件

For testing hands-free devices，we suggest a system that simulates real life communication situations as closely as possible，without letting the physical presence of a human interfere with the measurements。

The system consists of a HATS with ear and mouth simulators，a measurement front end and the PULSE-based Voice Testing Software for Hands-free-equipment Type 7909-NS1.The software has capabilities for both data acquisition and data analysis，according to standards set by VDA（Verband Automobilindurie）。The system can be used in a lab setting and for in-vehicle testing of audio performance。

TYPE7907-NS1

PULSE Electroacoustics Type 7907-NS1

Aversatile platform for electroacoustic transducer evaluation，PULSE Electroacoustics includes awide range of advanced analysis capabilities required by audio engineers working in acoustical design research and development。

电气测试自动化和数据管理

PULSE software for automating repetive test sequences by scripting，and for archiving results for easy recall and overviewing

TYPE4128-C

Head and Torso Simulator（HATS）

Designed to be used for in situ electroacoustics tests on，for example，telephone handsets，headsets，audio conference devices，microphones，headphones，hearing aids，hearing protectors and smart speakers。

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