Doctoral Dissertation Research: Articulatory and acoustic patterns in phonemic and phonetic nasalization

博士论文研究：音素和语音鼻化中的发音和声学模式

• 批准号: 1651197
• 负责人: Ryan Shosted
• 金额: $ 1.04万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-04-01 至 2018-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1651197&HistoricalAwards=false
• 关键词: Doctoral; Dissertation; Research; Articulatory; acoustic

Vowel nasalization lies at the heart of a number of important, widely-attested diachronic andsynchronic phonological processes throughout the world's languages. However, relatively littleis understood about the mapping between the oro-pharyngeal articulatory system and theacoustics of phonemically nasal and phonetically nasalized vowels compared to their oralcounterparts. This project combines state-of-the-art rt-MRI methods and sophisticated modelingtechniques to solve some persistent problems regarding the synchronic and diachronic behaviorof vowels in Brazilian Portuguese, with wider implications for many other languages with vowelnasalization.This dissertation applies advanced methodologies in the collection and analysis of real-timemagnetic resonance imaging (rt-MRI) to study phonemically nasal, phonetically nasalized, andoral vowels in Brazilian Portuguese. Researchers debate whether nasal vowels in BrazilianPortuguese are phonemically distinct or are underlyingly two segments (an oral vowel followedby a nasal consonant). This work will add a different perspective to this debate by constructingand analyzing a multi-speaker corpus of nasal, phonetically nasalized, and oral vowels.Analysis focuses on oro-pharyngeal differences in Brazilian Portuguese vowels, as well asvelopharyngeal opening. This work aims to show that underlying oro-pharyngeal shape of oralvowels and nasalized vowels differs from those of phonemic nasal vowels, suggesting that eachvowel has its own motor plan. This will add to a growing body of literature arguing that nasalvowels are not merely oral vowels affected by velopharyngeal opening, and that oro-pharyngealdifferences in these vowels contribute to sound change. The project will also involve carefulanalysis of the acoustics of Brazilian Portuguese vowels and will extend to modeling theacoustics that can be drawn from MR images. This study will give more insight into the causesof diachronic sound change, specifically with regard to the feedback loop between speechperception and speech articulation.

元音鼻化是世界语言中许多重要的、被广泛证实的历时和共时语音过程的核心。然而，相对较少的是了解口咽发音系统之间的映射和语音鼻音和语音鼻音化元音的声学相比，他们的口头同行。本研究结合了最先进的实时核磁共振成像技术和复杂的建模技术，解决了巴西葡萄牙语元音的共时和历时行为方面的一些长期存在的问题，并对其他许多具有元音鼻化的语言产生了更广泛的影响。巴西葡萄牙语中的口头元音。研究人员争论巴西葡萄牙语中的鼻元音是音位上不同的，还是基本上是两个部分（一个口头元音后面跟着一个鼻辅音）。这项工作将增加一个不同的视角，这场辩论的constructingand分析多扬声器语料库的鼻音，语音鼻音化，和oral vowels.Analysis的重点是oro-pharyngeal差异在巴西葡萄牙语元音，以及throughapharyngeal开放。本研究的目的是揭示口元音和鼻元音的口咽形态与音位鼻元音的不同，表明每个元音都有自己的运动计划。这将增加越来越多的文献认为，鼻元音不仅仅是口腔元音的影响，咽喉开放，口咽差异，这些元音有助于声音的变化。该项目还将涉及巴西葡萄牙语元音声学的仔细分析，并将扩展到可以从MR图像中提取的声学建模。本研究将进一步探讨语音历时变化的原因，特别是语音感知和语音清晰度之间的反馈回路。

项目成果

Oropharygneal articulation of phonemic and phonetic nasalization in Brazilian Portuguese

• DOI: 10.1016/j.wocn.2018.07.009
• 发表时间: 2018-11-01
• 期刊: JOURNAL OF PHONETICS
• 影响因子: 1.9
• 作者: Barlaz, Marissa;Shosted, Ryan;Sutton, Brad
• 通讯作者: Sutton, Brad