The Relative Amplitude of Vowel Formants

元音共振峰的相对振幅

• 批准号: 6835991
• 负责人: EWA JACEWICZ
• 金额: $ 7.38万
• 依托单位: OHIO STATE UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-01-01 至 2006-12-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6835991
• 关键词: Relative; Amplitude; Vowel; Formants

EXCEED THE SPACE PROVIDED. The long-term objective of this research is to characterize the role of relative intensity of speech segments in the auditory processing of vowels and consonants within larger prosodic domains such as words. The role of intensity in speech processing has not been explored in a systematic way and its exact contribution is unknown. This proposal focuses on vowels and investigates the relative amplitude of vowel formants as a cue to making phonemic distinctions. Two specific aims are 1) to examine the acoustic pattern of the relative amplitude of formants in the production of selected coarticulated and isolated vowels, and 2) to examine the auditory effect of manipulation of formant levels on listeners' decision about vowel quality and intelligibility of words. The proposed acoustic study is an extension of an early work on vowel intensity by House & Fairbanks (1953) to formant levels (F1, F2, F3, F4). Its goal is to establish whether and how vowel intensity is distributed over formant levels and whether this distribution varies with consonantal context. The proposed perception study investigates listeners' response to ichanges in the relative amplitude of formants for isolated vowels and for vowels in word context. Pilot idata show that intensity of formants is a cue to vowel categorization. 24 subjects will be used to further Itest the patterns of formant levels in a larger set of American English vowels. The acoustic and iperceptual relevance of these patterns aims to provide basic understanding about the way the vowel cues are integrated in a single percept when temporal and contextual factors reduce time for their processing in natural speech. Since the dynamic range in the intensity of sounds has been shown to have a dramatic effect on hearing aid performance, and since around one half of the Americans over the age of 65 may be candidates for amplification this research has implications for the quality of health care for these individuals. PERFORMANCE SITE ========================================Section End===========================================

超出所提供的空间。这项研究的长期目标是表征语音片段的相对强度在较大韵律领域（例如单词）的元音和辅音的听觉处理中的作用。强度在语音处理中的作用尚未得到系统的探索，其确切贡献尚不清楚。该提案重点关注元音，并研究元音共振峰的相对幅度，作为区分音素的线索。两个具体目标是 1) 检查在产生选定的联合元音和孤立元音时共振峰相对幅度的声学模式，以及 2) 检查共振峰水平操纵对听众关于元音质量和单词清晰度的决定的听觉影响。拟议的声学研究是将 House & Fairbanks (1953) 的元音强度早期研究扩展到共振峰级别（F1、F2、F3、F4）。其目标是确定元音强度是否以及如何在共振峰水平上分布，以及这种分布是否随辅音上下文而变化。拟议的感知研究调查了听众对孤立元音和单词上下文中元音共振峰相对幅度变化的反应。试点 idata 显示共振峰强度是元音分类的线索。 24 个科目将用于进一步测试更大的美式英语元音集合中的共振峰水平模式。这些模式的声学和感知相关性旨在提供对当时间和上下文因素减少自然语音处理时间时元音线索集成在单个感知中的方式的基本理解。由于声音强度的动态范围已被证明对助听器性能有显着影响，并且由于大约一半的 65 岁以上的美国人可能是扩音的候选者，因此这项研究对这些人的医疗保健质量具有重要意义。表演网站==========================================章节结束===============================================