Coarticulatory stability in American English vertical bar r vertical bar
Coarticulatory stability in American English vertical bar r vertical bar
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DOI：
10.1121/1.418333
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发表时间：
1997-06-01
影响因子：
2.4
通讯作者：
EspyWilson, CY
中科院分区：
文献类型：
--
作者：
Boyce, S;EspyWilson, CY
许多不同的研究人员报告说，美式英语 /r/ 与相邻片段的衔接方式存在很大程度的差异。使用声学和发音数据来研究“rhotic”美式英语方言使用者的这种变异性。讨论了三个问题：(1) F3 轨迹受片段上下文和重音影响的程度，(2) 数据在多大程度上支持“共同生产”与“传播”协同发音模型，以及 (3) 美式英语 /r/ 的主要声学表现 - F3 的时间过程 - 反映 /r/ 的舌头运动的程度。通过自动程序测量 F3 共振峰轨迹持续时间，并比较 /'waCrav/ 和 /wa'Crav/ 形式的无义词，其中 C 表示唇辅音、齿龈辅音或软腭辅音。将这些持续时间与 /'warav/ 和 /wa'rav/ 中的 F3 轨迹持续时间进行比较。此外，还检查了带有和不带有/r/的单词的初始音节中的共振峰值，以检查介入辅音上下文的影响。结果表明，不同辅音上下文中的 F3 轨迹持续时间相似，并且在重音上的程度较小，这表明 /r/ 的协同发音可以通过稳定的 /r/ 相关发音轨迹与相邻声音的运动的重叠来实现。这一解释以及 F3 时间进程与 /r/ 舌头运动的一致性得到了一个受试者舌头运动直接测量的支持。 (C) 1997 年美国声学学会。
A number of different researchers have reported a substantial degree of variability in how American English /r/ coarticulates with neighboring segments. Acoustic and articulatory data were used to investigate this variability for speakers of ''rhotic'' American English dialects. Three issues were addressed: (1) the degree to which the F3 trajectory is affected by segmental context and stress, (2) to what extent the data support a ''coproduction'' versus a ''spreading'' model of coarticulation, and (3) the degree to which the major acoustic manifestation of American English /r/-the time course of F3-reflects tongue movement for /r/. The F3 formant trajectory durations were measured by automatic procedure and compared for nonsense words of the form /'waCrav/ and /wa'Crav/, where C indicates a labial, alveolar, or velar consonant. These durations were compared to F3 trajectory durations in /'warav/ and /wa'rav/. In addition, formant values in initial syllables of words with and without /r/ were examined for effects of intervening consonant contexts. Results indicated similar F3 trajectory durations across the different consonant contexts, and to a lesser degree across stress, suggesting that coarticulation of /r/ can be achieved by overlap of a stable /r/-related articulatory trajectory with movements for neighboring sounds. This interpretation, and the concordance of F3 time course with tongue movement for /r/, was supported by direct measures of tongue movement for one subject. (C) 1997 Acoustical Society of America.