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本文选取存在多种降调、用传统标调法难以描写的汕头谷饶方言为研究个案,对谷饶的5个降调进行声学分析,并从音高、调形凹凸、平拱时长及斜率等角度对其中的4个舒声降调进行听辨实验。研究表明,谷饶方言的降调在音高、凹直以及平拱绝对时长上存在范畴感知,在声调斜率上虽不存在范畴感知,但斜率对感知边界有影响。根据研究结果,我们认为有必要将“凹/直”及拐点前后等特征作为各种调型中都可能出现的区别性特征进行研究。
This paper selects a variety of down-regulation, Shantung Valley Rao dialect difficult to describe with the traditional standard method for the case study, Acoustic analysis of the five downgrades of Valley Rao, and from the pitch, tuning convex, flat arch length and slope From the perspective of hearing reduction experiments, four of them were dialed down. The study shows that there is category perception in the pitch, pitch, and absolute length of flat arches. There is no category perception in the slope of tone, but the slope has an impact on the perceived boundary. According to the results of the research, we think it is necessary to study the characteristics of “concave / straight” and before and after the inflection point as the distinctive features that may appear in various types of shaping.