无锡影院语音清晰度测试费用 混响测试 机构

测试方法
GB∕T 12060.16-2017声系统设备 *16部分：通过语音传输指数客观评价言语可懂度

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IEC 60268-16:2011 specifies objective methods for rating the transmission quality of speech with respect to intelligibility. It provides a comprehensive manual for all types of users of the STI method in the fields of audio, communications and acoustics. Three methods are presented, which are closely related and are referred to as STI, STIPA, and STITEL. The first two methods are intended for rating speech transmission performance with or without sound systems. The STITEL method has more restricted uses.