An acoustic analysis of Oromo vowels of the northern dialect

IF 0.8 3区 文学 0 LANGUAGE & LINGUISTICS Journal of the International Phonetic Association Pub Date : 2023-02-27 DOI:10.1017/s0025100323000014
Feda Negesse
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Abstract

This study presents the results of an acoustic analysis of Oromo vowels of the northern dialect. The data for the study were collected from 19 speakers (nine female, 10 male) who produced the vowels in the same phonetic environment. Such acoustic measures as duration, fundamental frequency and the first three formant frequencies were extracted for the analysis. In a linear mixed-effects model, each acoustic parameter was modelled as a function of the fixed effects such as gender and vowel quality, and of participants’ random effects. The model shows a main effect of gender on all the acoustic measures, with the female speakers producing the vowels with significantly greater duration and formant frequencies. The model also indicates the main effect of vowel quality on all the acoustic measures with the exception of duration. The proportion of variances explained by gender and vowel quality is found to be large for fundamental frequency and the first formant frequency respectively. As regards the classification of the vowels, Support Vector Machine reveals that the time-varying frequency does not have an advantage over a steady state in separating vowels of both genders. However, it is generally fairly effective in classifying vowels of the dialect of the language.
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北部方言中奥罗莫语元音的声学分析
本研究提出了对北部方言奥罗莫元音的声学分析结果。这项研究的数据来自19位说话者(9位女性,10位男性),他们在相同的语音环境中发出元音。提取持续时间、基频和前三个形成峰频率等声学测量值进行分析。在线性混合效应模型中,每个声学参数都被建模为固定效应(如性别和元音质量)和参与者随机效应的函数。该模型显示了性别对所有声学测量的主要影响,女性说话者产生的元音持续时间和共振频率明显更大。该模型还指出了元音音质对除持续时间外的所有声学测量的主要影响。由性别和元音质量解释的差异比例分别在基频和第一形成峰频率上很大。关于元音的分类,支持向量机揭示了时变频率在分离男女元音方面并不比稳定状态有优势。然而,它在对语言方言的元音进行分类时通常是相当有效的。
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来源期刊
CiteScore
2.10
自引率
12.50%
发文量
20
期刊介绍: The Journal of the International Phonetic Association (JIPA) is a forum for work in the fields of phonetic theory and description. As well as including papers on laboratory phonetics/phonology and related topics, the journal encourages submissions on practical applications of phonetics to areas such as phonetics teaching and speech therapy, as well as the analysis of speech phenomena in relation to computer speech processing. It is especially concerned with the theory behind the International Phonetic Alphabet and discussions of the use of symbols for illustrating the phonetic structures of a wide variety of languages. JIPA now publishes online audio files to supplement written articles Published for the International Phonetic Association
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