Schwa’s duration and acoustic position in American English
Schwa’s duration and acoustic position in American English
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美式英语中 Schwa 的持续时间和声学位置
DOI：
10.1016/j.wocn.2022.101198
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发表时间：
2023
影响因子：
1.9
通讯作者：
Strand, Emily
中科院分区：
文献类型：
--
作者：
Cohen Priva, Uriel;Strand, Emily
美国英语中的schwa的位置仅仅是由它出现的语境决定的吗？当元音持续时间较短时，元音是否中和为schwa？我们解决这两个相互关联的问题，使用七叶树语料库研究元音行为在多个背景下的自发讲话。我们发现，除了紧张的高元音转移到较低的F1值时，他们的持续时间相对较短，包括宽松的高元音和词汇schwas，而不是朝着中间元音的位置，schwa占据时，其持续时间长。然而，我们也复制的发现，schwa是更依赖于上下文和持续时间比其他元音。结果是不一致的想法，舒瓦的立场是完全由它出现的背景。然而，当持续时间较长时，schwa向更高的F1值的转变不一定与其他元音在持续时间较长时向更高的F1值的转变不同，因此没有必要争论schwa的中元音属性是由于具有目标。F1术语。
Is American English schwa’s position determined solely by the context in which it appears? Do vowels neutralize to schwa when their duration is shorter? We address these two inter-related questions using the Buckeye corpus to study vowel behavior across multiple contexts of spontaneous speech. We find that all except tense high vowels shift to lower F1 values when their duration is relatively short, including lax high vowels and lexical schwas, rather than toward a mid-vowel position that schwa occupies when its duration is long. However, we also replicate the finding that schwa is more dependent on both context and duration than other vowels. The results are not consistent with the idea that schwa’s position is determined exclusively by the context in which it appears. However, schwa’s shift to higher F1 values when its duration is longer is not necessarily different from other vowels’ shift to higher F1 values when their duration is longer, making it unnecessary to argue that schwa’s mid-vowel properties are due to having a target in F1 terms.