Structural representation of the non-native pronunciations
Structural representation of the non-native pronunciations
复制标题
DOI：
10.21437/interspeech.2005-94
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
S. Asakawa;N. Minematsu;Toshiko Isei-Jaakkola;K. Hirose
中科院分区：
文献类型：
--
作者：
S. Asakawa;N. Minematsu;Toshiko Isei-Jaakkola;K. Hirose
语音学提供的语音的声学表示，声谱图，是噪声表示，因为它显示了语音的每一个声学方面。年龄、性别、体形、麦克风、房间、线路等与语音评价完全无关。然而，谱图不可避免地受到这些因素的影响。最近，一种新的语音声学表示被提出，其中这些非语言因素的维度很难被看到[1,2]。每个语音的声学物质都被丢弃，只提取它们的相互关系来结构地表示发音。使用这种方法，个别学习者被描述为扭曲的音位结构bbb，并研究了发音的自动评分[3,4]。本文介绍了使用该方法进行的两种新的分析。第一个分析是为了检验该方法是否可以仅使用有限的语音量来适当地追踪学生发音的发展。第二部分侧重于发音的韵律方面，特别是重读元音和非重读元音。前者表明所提出的方法可以充分显示学生的发展历史，后者阐明了发音结构的大小与发音熟练程度的高度相关。
Acoustic representation of speech provided by phonetics, spectrogram, is noisy representation in that it shows every acoustic aspect of speech. Age, gender, shape, microphone, room, line, etc. are completely irrelevant to the pronunciation assessment. However, the spectrogram is affected inevitably by these factors. Recently, a novel acoustic representation of speech was proposed, where dimensions of these non-linguistic factors can hardly be seen[1, 2]. Every acoustic substance of speech is discarded and only their interrelations are extracted to represent the pronunciation structurally. Using this method, individual learnersweredescribedasdistortedphonemicstructures[3]andautomatic scoring of the pronunciation was investigated[3, 4]. This paper describes two new analyses using the proposed method. The first analysis is done to examine whether the method can trace the development of a student’s pronunciation appropriately using only a limited amount of speech. The second one focuses on the prosodic aspect of the pronunciation, especially stressed and unstressed vowels. The former indicates that the proposed method can show history of the student’s development adequately and the latter clarifies that size of the pronunciation structure is highly correlated with the pronunciation proficiency.