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Vowel coarticulation: Landmark statistics measure vowel aggression
Wei-rong Chen1, Yueh-chin Chang1, Khalil Iskarous2
1Graduate Institute of Linguistics, National Tsing Hua University, No. 101 Sec. 2 Guangfu Road, Hsinchu 30013, Taiwan.
The Journal of the Acoustical Society of America
|September 3, 2015
Summary
This study quantifies vowel coarticulation in Taiwan Mandarin using articulatory data. Vowel /i/ showed the most tongue body information sharing with preceding consonants, while lip articulator sharing followed the order /u/ > /i/ > /a/.
Area of Science:
- Phonetics
- Speech Science
- Linguistics
Background:
- Previous research used regression analysis and mutual information to study consonant coarticulation.
- These methods quantified consonant place invariance and coarticulatory resistance.
Purpose of the Study:
- To apply regression analysis and mutual information to measure vowel coarticulatory properties.
- To investigate the coarticulatory behavior of vowels in Taiwan Mandarin CV syllables.
Main Methods:
- Utilized articulatory data from seven Taiwan Mandarin speakers producing CV syllables.
- Employed regression analysis and mutual information to assess information sharing between consonants and vowels.
Main Results:
- Vowel /i/ exhibited the highest information sharing with the preceding consonant concerning the tongue body.
- For the lip articulator, information sharing followed the order: /u/ > /i/ > /a/.
- Vowels /a/ and /u/ did not show significant differences in tongue body information sharing.
Conclusions:
- Vowel landmark statistics may reflect vowel "aggression" in speech production.
- The Vowel-to-Consonant (V-to-C) effect appears dominant over the Consonant-to-Vowel (C-to-V) effect in CV coarticulation.
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