The link between speaker-specific accuracy in speech production and listener-specific acuity in speech perception: From subphonemic cue-weighting to prosodic categories

特定于说话者的语音生成准确性与特定于听者的语音感知敏锐度之间的联系：从亚音素线索加权到韵律类别

• 批准号: RGPIN-2018-06518
• 负责人: Pape, Daniel
• 金额: $ 1.75万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=680033
• 关键词: link; between; speaker; specific; accuracy

Speech production is concerned with the articulatory mechanisms to produce an acoustic speech output, whereas speech perception examines how differences in articulatory settings and acoustic variation contribute to a robust perceptual construct. However, currently there is sparse research on the direct connection between the articulatory accuracy of a speaker on the one hand and the acuity of speech perception of a listener, on the other hand. ******A number of interesting research questions arise from a closer examination of this production-perception link: (1) can an accuracy/acuity link be found for individual speakers/listeners as well, i.e. is a speaker that produces more accurate and less variable speech production targets also coincides also a listener with improved speech perception skills? And vice versa, (2) are listeners with well-defined and narrow perception boundaries also speakers with less variable and more precise places of articulation? And if examining differences between speakers/listeners from an individual point of view, (3) do certain individual personality traits and spectrum differences influence production accuracy and/or the perceptual acuity to distinguish speech sounds? Finally, if seen from a cross-population or cross-linguistic perspective, (4) can we define certain groups of speakers/listeners who would use only certain acoustic cues or a combination of different cues in their production and perception strategies, or is there rather a single major strategy across different populations/languages to achieve a certain production/perception contrast? ******The overarching goal of this project is to elucidate how speech production and speech perception in different languages and different populations are linked through their boundary conditions, namely (1) the articulatory requirements to produce speech and (2) the acoustic consequences of these articulatory requirements. This goal will be reached by examining different acoustic cues found within speech sounds and contrast these findings with cues that span several speech segments like syllables or words to elicit if (1) increased accuracy in the production of speech also leads to increased perceptual acuity and (2) what role acoustic variance plays for the generation of robust perceptual contrasts, in other words: what forms a phonetic/phonological category? ******This work will advance our understanding how speech production and perception are linked, i.e. which configuration of acoustic cues and/or articulatory settings results in an optimal perceptual output. Potential applications of this work are ultrasound videos with optimized articulatory and/or acoustic settings that help Speech-Language therapists to find the best therapy approach for a given speech sound disorder. Furthermore, the output of this program will help optimizing cochlear implants and thus benefit hearing-impaired patients.**

语音产生与发音机制有关，以产生声学语音输出，而语音感知则研究发音设置和声学变化的差异如何有助于建立一个强大的感知结构。然而，目前有稀疏的研究之间的直接联系的发音准确性的发言者一方面和敏锐的言语感知的听众，另一方面。** 从对这种产生-感知联系的更仔细的检查中产生了许多有趣的研究问题：（1）是否也可以为个体说话者/听众找到准确性/敏锐度的联系，即，产生更准确和更少变化的语音产生目标的说话者也与具有改进的语音感知技能的听众一致？反之亦然，（2）具有明确和狭窄感知边界的听者是否也是具有较少变量和更精确发音位置的说话者？如果从个体的角度来研究说话者/听者之间的差异，（3）某些个体的个性特征和频谱差异是否会影响生产的准确性和/或区分语音的感知敏锐度？最后，如果从跨人群或跨语言的角度来看，（4）我们是否可以定义某些群体的说话者/听者在他们的产生和感知策略中只使用某些声学线索或不同线索的组合，或者在不同的人群/语言中存在单一的主要策略来实现一定的产生/感知对比？** 本项目的总体目标是阐明不同语言和不同人群的语音产生和语音感知如何通过其边界条件联系起来，即（1）产生语音的发音要求和（2）这些发音要求的声学后果。这一目标将通过检查言语声音中发现的不同声学线索来实现，并将这些发现与跨越多个言语片段（例如音节或单词）的线索进行对比，以得出以下结论：（1）言语产生的准确性提高也会导致感知敏锐度的提高和（2）声学差异对于生成强大的感知对比起着什么作用，换句话说：什么形成了语音/音位类别？** 这项工作将促进我们理解语音产生和感知是如何联系在一起的，即声学提示和/或发音设置的哪种配置会导致最佳的感知输出。这项工作的潜在应用是超声视频优化发音和/或声学设置，帮助语音语言治疗师找到最佳的治疗方法，为给定的语音障碍。此外，该程序的输出将有助于优化人工耳蜗植入，从而使听力受损患者受益。