成都方言单字调实验研究
Experimental Study on Monosyllabic Tone in Chengdu Dialect

成都方言是四川方言的重要组成部分，也是西南官话的重要代表之一。之前对于成都方言声调的研究结果比较零碎。本文旨在通过全面的声调实验，对成都方言单字调进行全面的调查和记录。本文通过声学实验，分析研究成都方言不同年龄、不同性别的单字调的音高与时长。成都方言单字调的音高因不同年龄、不同性别会有一些轻微差异，但调型一致，属于同类。经实验结果和听感综合判断，它们属于同一调位的不同变体。经调值归一得出成都方言单字调调值：阴平35、阳平41、上声51、去声213。单字调的相对时长：阴平1.15 > 阳平1.11 > 去声1.10 > 上声0.64。从调类看，阴平最长，上声最短，阳平和去声居中且差距较小。
Chengdu dialect is an important part of Sichuan dialect and one of the important representatives of Southwest Mandarin. Previous research on Chengdu dialect tones has been relatively fragmentary. This article aims to conduct a comprehensive investigation and record of single character tones in Chengdu dialect through comprehensive tonal experiments. This article adopts experimental method to study the single pitch and duration of different ages and different genders of Chengdu dialect. Although the single tones of Chengdu dialect shows a slight difference in tone value because of different ages and genders, the same-type tones should belong to the same tone category. Combine acoustic experiment and auditory perception, we believe this is the common difference among the same tone variants. After the normalization, there are four tones of separate word in Chengdu dialect: Yinping 35, Yangping 41, Shangsheng 51 and Qusheng 213. On the relative duration of mono-syllable tone: Yinping 1.15 > Yangping 1.11 > Qusheng 1.10 > Shangsheng 0.64. Yinping is the longest, Shangsheng is the shortest, the gap between Yangping and Qusheng is small and they are in the middle.