Vowel constrictions are recoverable from formants.
Vowel constrictions are recoverable from formants.
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DOI：
10.1016/j.wocn.2010.03.002
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发表时间：
2010-07-01
影响因子：
1.9
通讯作者：
Iskarous, Khalil
中科院分区：
文献类型：
--
作者：
Iskarous, Khalil
声道在其所有空间细节中的面积函数不能从语音信号直接计算。但是，部分的，但语音独特的，关于发音的信息可从到达听者耳朵的声学信号中恢复吗？这个问题的答案对语音学很重要，因为不同的言语感知理论预测了不同的答案。一些理论认为发音信息的恢复是可能的，而另一些则认为这是不可能的。然而，这两种类型的理论都没有提供确凿的证据表明独特的发音信息可以或不可从声学信号中提取。本研究的重点是元音手势，并检查语音信号中是否包含语言上重要的信息，例如压缩位置、压缩程度和舍入，以及这些信息是否可以从共振峰参数中恢复。扰动理论和线性预测相结合，在类似的方式在[。言语-说话者二分法的声学语音学和发音学研究。博士论文，新南威尔士大学]，以评估有关元音紧缩的信息的恢复的准确性。从10个美国英语元音的语音信号中估计出的独特的收缩信息与同时收集的39个说话者的X射线微束发音数据中获得的收缩信息进行了比较。射线微束语音产生数据库用户手册。威斯康星州，麦迪逊，威斯康星大学]。独特的发音信息的恢复依赖于一种新的技术，使用共振峰频率和振幅，并不依赖于发音数据的主成分分析，因为大多数其他反演技术。这些结果提供的证据表明，独特的发音信息元音可以从声学信号中恢复。
The area function of the vocal tract in all of its spatial detail is not directly computable from the speech signal. But is partial, yet phonetically distinctive, information about articulation recoverable from the acoustic signal that arrives at the listener’s ear? The answer to this question is important for phonetics, because various theories of speech perception predict different answers. Some theories assume that recovery of articulatory information must be possible, while others assume that it is impossible. However, neither type of theory provides firm evidence showing that distinctive articulatory information is or is not extractable from the acoustic signal. The present study focuses on vowel gestures and examines whether linguistically significant information, such as the constriction location, constriction degree, and rounding, is contained in the speech signal, and whether such information is recoverable from formant parameters. Perturbation theory and linear prediction were combined, in a manner similar to that in [. An acoustic-phonetic and articulatory study of speech-speaker dichotomy. Doctoral dissertation, University of New South Wales], to assess the accuracy of recovery of information about vowel constrictions. Distinctive constriction information estimated from the speech signal for ten American English vowels were compared to the constriction information derived from simultaneously collected X-ray microbeam articulatory data for 39 speakers [. Xray microbeam speech production database user’s handbook. University of Wisconsin, Madison, WI]. The recovery of distinctive articulatory information relies on a novel technique that uses formant frequencies and amplitudes, and does not depend on a principal components analysis of the articulatory data, as do most other inversion techniques. These results provide evidence that distinctive articulatory information for vowels can be recovered from the acoustic signal.
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通讯作者：
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