声系统设备.第16部分:用语音传输系数测定语音清晰度的目标额定功率

[中文适用范围]： 定义了评估语音传输质量的清晰度的客观方法。这四种密切相关的方法被称为“STI”、“STITEL”、“STIPA”和“RASTI”方法（参见第 3 条）。 [外文原描述]： defines objective methods for rating the transmission quality of speech with respect to intelligibility. The four methods, which are closely related, are referred to as the "STI," the "STITEL", the "STIPA" and the "RASTI" methods (see Clause 3).