Meireles A R, Barbosa P A
Federal University of Minas Gerais, Speech Prosody Studies Group, Faculdade de Letras, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, MG 31270-901, Brazil.
Speech Commun. 2008 Nov 1;50(11-12):916-924. doi: 10.1016/j.specom.2008.05.005.
This work, which is couched in the theoretical framework of Articulatory Phonology, deals with the influence of speech rate on the change/variation from antepenultimate stress words into penultimate stress words in Brazilian Portuguese. Both acoustic and articulatory (EMMA) studies were conducted. On the acoustic side, results show different patterns of post-stressed vowel reduction according to the word type. Some words reduced their medial post-stressed vowels more than their final post-stressed vowels, and others reduced their final post-stressed vowels more than their medial post-stressed vowels. On the articulatory side, results show that the coarticulation degree of the post-stressed consonants increases with speech rate. Also, with the use of a measure called proportional consonantal interval (PCI), it was found in measurements of articulation that such measure is influenced by the word type. Three different groups of words were found according to their PCI. These results show how dynamical aspects influenced by speech rate increase are related to the lexical process of change/variation from antepenultimate stress words into penultimate ones.
这项研究以发音音系学的理论框架为依托，探讨语速对巴西葡萄牙语中单词重音从倒数第三个音节转移至倒数第二个音节的变化/变异的影响。研究开展了声学和发音（电磁发音仪）两方面的研究。在声学方面，结果表明，根据单词类型不同，重音后元音缩减呈现出不同模式。一些单词的重音后中间元音比重音后末尾元音缩减得更多，而另一些单词的重音后末尾元音比重音后中间元音缩减得更多。在发音方面，结果显示，重音后辅音的协同发音程度随语速增加。此外，通过使用一种名为比例辅音间隔（PCI）的测量方法，在发音测量中发现该测量方法受单词类型影响。根据PCI发现了三组不同的单词。这些结果表明，语速增加所影响的动态因素是如何与单词重音从倒数第三个音节变为倒数第二个音节的词汇变化/变异过程相关的。
