The Smooth Signal Redundancy Hypothesis: A Functional Explanation for Relationships between Redundancy, Prosodic Prominence, and Duration in Spontaneous Speech
The Smooth Signal Redundancy Hypothesis: A Functional Explanation for Relationships between Redundancy, Prosodic Prominence, and Duration in Spontaneous Speech
复制标题
平滑信号冗余假说：自发语音冗余、韵律突出和持续时间之间关系的功能解释
作者：
M. Aylett;A. Turk
本文探讨了影响自发语音的持续时间变化、韵律结构和冗余的两个相关因素。我们认为，在有效地消耗发音努力的同时产生强大的交流的限制导致语言冗余和持续时间之间的反比关系。这种反比关系通过在语音信号中更均匀地传播信息来提高通信鲁棒性，从而产生更平滑的信号冗余分布。我们认为韵律突出是实现平滑信号冗余的语言手段。韵律突出增加了音节持续时间，并在很大程度上与不可预测的语音部分重合，从而导致更平滑的信号冗余。在大型自发语音语料库中对冗余、音节持续时间和韵律结构进行线性回归的结果证实：（1）语言冗余和持续时间之间存在反比关系；（2）韵律突出性和持续时间之间存在很强的关系。由语言冗余和韵律突出性预测的方差的很大一部分是非唯一的这一事实表明，在英语中，韵律突出性结构是在自发语音中表达由鲁棒信号要求引起的约束的手段。
This paper explores two related factors which influence variation in duration, prosodic structure and redundancy in spontaneous speech. We argue that the constraint of producing robust communication while efficiently expending articulatory effort leads to an inverse relationship between language redundancy and duration. The inverse relationship improves communication robustness by spreading information more evenly across the speech signal, yielding a smoother signal redundancy profile. We argue that prosodic prominence is a linguistic means of achieving smooth signal redundancy. Prosodic prominence increases syllable duration and coincides to a large extent with unpredictable sections of speech, and thus leads to a smoother signal redundancy. The results of linear regressions carried out between measures of redundancy, syllable duration and prosodic structure in a large corpus of spontaneous speech confirm: (1) an inverse relationship between language redundancy and duration, and (2) a strong relationship between prosodic prominence and duration. The fact that a large proportion of the variance predicted by language redundancy and prosodic prominence is nonunique suggests that, in English, prosodic prominence structure is the means with which constraints caused by a robust signal requirement are expressed in spontaneous speech.