有关语言可懂度的几种客观测评方法

语言清晰度／可懂度的测试,传统作法是在听音环境中用字（词）表,通过符合一定条件的测听队伍进行听音测试,统计后作出测评。８０年代末,提出了用语言传输指数（ＳＴＩ）对语言可懂度作出评估的方法。为了简化测试程序,ＩＥＣ提出了ＲＡＳＴＩ法,１９９７年１２月发表的ＩＥＣ文件懂度作了评估的方法。为了简化测试程序,ＩＥＣ提出了ＲＡＳＴＩ法,１９９７年１２月发表的ＩＥＣ文件（１００Ｃ／１８９／ＦＤＩＳ）对１９９８

Several Objective Testing Method about Speech Intelligibility

For speech articulation/intelligibility, traditional method took "word" listening test in listening environment by jury and investigated after statistics. In the late eighties, method nvestigat- ing speech intelligibility are presented by speech transmission index(STI). To simplify testing program, IEC presented RASTI method. IEC document (100C/189/FDIS) published in Dec. 1997 revised IEC268-16 published in 1988. STITEL method and some other methods were proposed besides STI and RASTI. In this paper the above methods are introduced according to the documents, and also the corresponding condition.