摘要
本文通过对单音节字的声学测量及分析 ,对比上海市的地方普通话和普通话的元音系统 ,从而为汉语口语处理基本元音系统提供可靠的声学参数。发现 :1 受上海话自身元音系统的影响 ,上海普通话男女声学元音图都表现出一定的外延性。 2 上海普通话无论男女 ,[ , ]在声学元音图上的分布都有很大的重叠区。3 从共振峰模式图上看 :上海普通话 [y ,i, , ]的F1-F2距离都较标准普通话的大 ,其中 [ ]的共振峰模式几乎接近于 [ ]。 4 多数发音人的 [ ]都或多或少表现出双元音化趋势。
Dialectal differences are widely investigated for dialect identification, language (L2) learning and pronunciation modeling for Automatic Speech Recognition (ASR). Especially in Chinese ASR systems, how to deal with the accent issue becomes a big challenge due to the variability of the language. We compared these pure monophthongs [,,a,u,,y,i] for 10 SM (Standard Mandarin) and 20 ASH (Shanghai-accented Mandarin) speakers in NOKIA-CASS corpus and tried to find out the differences in monophthongs between SC and ASH: (1)under the influence of its dialectal vowel inventory, the vocalic space of ASH would be inevitably more peripheral. (2)there is a large overlap between the two vowel ellipses of [,] in ASH speakers while in SC there is not. (3)in comparison with SC, the first two formants of [y,i,,] are all drawn much further in ASH speakers. Meanwhile the formant pattern of [] is very similar to that of [ ] in ASH speakers. (4)vowel [] in most speakers has a tendency of diphthongization, especially in ASH speakers.
出处
《中文信息学报》
CSCD
北大核心
2004年第6期66-72,共7页
Journal of Chinese Information Processing
关键词
计算机应用
中文信息处理
上海普通话
标准普通话
声学元音图
共振峰模式
口音
computer application
Chinese information proce standard mandarin
shanghai-accented mandarin
vowel chart
formant pattern
accent.
