Temporal Integration of Acoustic Detail in Speech

描述（由申请人提供）：我们实验室和其他人的最新研究挑战了传统观念，即语音感知系统的目标是丢弃信号中不必要的变化，而支持离散词汇或子词汇单元。相反，似乎感知系统对这些信息很敏感，并且能够将其保留足够长的时间，以便用于解决时间模糊性和预测即将到来的语音材料。这项建议将扩展这些基本的结果，通过检查语音环境中的感知系统是敏感的细粒度的细节和这种敏感性的词汇社区的后果。它将进一步扩展这些研究结果，通过检查的情况下，在这种声学细节的知识可能会预测即将到来的音素或单词使用语音同化的知识，也有助于解决以前的歧义所创建的语速，词汇状态，和语义。

DESCRIPTION (provided by applicant): Recent research from our lab and others has challenged the traditional notion that the goal of the speech perception system is to discard unnecessary variability in the signal in favor of discrete lexical or sub lexical units. Rather, it appears that the perceptual system is sensitive to this information and is able to retain it long enough for it to be of use in resolving temporal ambiguities and predicting upcoming phonetic material. This proposal will extend these basic results by examining the phonetic environments in which the perceptual system is sensitive to fine-grained detail and the consequences of this sensitivity for lexical neighborhoods. It will further extend these findings by examining situations in which knowledge of this acoustic detail may predict upcoming phonemes or words using knowledge of phonological assimilation, and also help resolve prior ambiguities created by speaking rate, lexical status, and sentential meaning.