Doctoral Dissertation Research: Articulation and Altered Auditory Feedback

博士论文研究：清晰度和改变的听觉反馈

• 批准号: 1628789
• 负责人: Susan Lin
• 金额: $ 1.27万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-07-01 至 2018-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1628789&HistoricalAwards=false
• 关键词: Doctoral; Dissertation; Research; Articulation; Altered

Individuals vary from one another in how they speak. Speakers listen to themselves while talking, and they constantly use this auditory feedback to correct their speech. This project examines two factors that influence the way that speakers are able to effectively use this auditory feedback: vocal tract shape and native language. The shape of the hard palate, which is an important factor in the relationship between articulation and acoustics, will be used as a measure of individual anatomical variation. Two similar sounds with comparable articulatory variation in American English and Tamil are compared to test the role of native language.In this experiment, participants say words containing the speech sounds of interest, and their auditory feedback is altered in real time by a computer so speakers hear themselves saying something different from what they actually produced. Previous studies (e.g. Houde and Jordan 1998) show that speakers change their articulation in response to altered auditory feedback, but it is not known how. Here, the novel addition of simultaneous ultrasound imaging will reveal how speakers compensate.The results of these studies stand to improve models of how we modify our motor plans while speaking. A complete model of typical speech serves as a baseline for understanding motor control in populations with disordered speech, such as those with apraxia of speech or Parkinson's Disease. This research will also contribute to our understanding of the role of auditory feedback in motor control, which has direct implications for people with hearing loss. Comparing English and Tamil helps to support generalizations about motor control in speech without confining results to English alone. This research also addresses long-standing questions concerning the instigation of language change. Exploring the factors that cause individuals to be fundamentally differently from each other in their speech production may provide an explanation for why some individuals might be more likely than others to contribute to the pool of language variation that results in sound change.

个人在讲话方面彼此之间有所不同。演讲者在交谈时听自己的声音，他们不断使用这种听觉反馈来纠正他们的演讲。该项目研究了两个因素，这些因素影响说话者能够有效地使用此听觉反馈的方式：声带形状和母语。硬pa的形状是发音和声学之间关系的重要因素，它将用作衡量单个解剖变异的量度。比较了两种类似的声音，并比较了美国英语和泰米尔语的相当发音差异，以测试母语的作用。在本实验中，参与者说包含感兴趣的语音的单词，计算机实时改变了他们的听觉反馈，因此演讲者听到自己听到自己说的与实际生产的内容不同。先前的研究（例如Houde and Jordan 1998）表明，说话者会因改变听觉的反馈而改变其发音，但尚不清楚。在这里，同时进行超声成像的新颖添加将揭示说话者的补偿方式。这些研究的结果将改善我们在讲话时如何修改运动计划的模型。典型言语的完整模型是理解语音无序人群中运动控制的基线，例如言语失调或帕金森氏病的人。这项研究还将有助于我们理解听觉反馈在运动控制中的作用，这对听力损失的人有直接影响。比较英语和泰米尔语有助于支持有关语音控制运动控制的概括，而不仅仅是仅将结果限制在英语中。这项研究还解决了有关语言变化煽动的长期问题。探索导致个人在语音生产中彼此不同的因素可能会提供一个解释，说明为什么有些人比其他人更有可能为语言变化做出贡献，从而导致声音变化。