DIN EN IEC 60268-16:2021
音响系统设备 第16部分:通过语音传输指数对语音清晰度进行客观评级(IEC 60268-16:2020);德文版 EN IEC 60268-16:2020
Sound system equipment - Part 16: Objective rating of speech intelligibility by speech transmission index (IEC 60268-16:2020); German version EN IEC 60268-16:2020