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Articulation of extreme formant patterns for emphasized vowels
1Gifu City Women's College, Gifu City, Gifu, Japan. erickson@gifu-cwc.ac.jp
Phonetica
|September 17, 2002
Summary
Emphasis in speech involves distinct jaw and tongue movements. Lowering the jaw and articulating the tongue more extremely for vowels enhances speech clarity and impacts acoustic properties.
Area of Science:
- Linguistics
- Speech Science
- Phonetics
Background:
- Understanding the biomechanics of speech production is crucial for phonetics.
- Emphasis in speech is known to alter articulatory and acoustic properties.
Purpose of the Study:
- To investigate the articulatory changes in jaw and tongue dorsum during emphasized vowels.
- To correlate these articulatory changes with acoustic consequences (formant frequencies).
Main Methods:
- Utilized X-ray microbeam recordings of American English speakers.
- Measured formant frequencies, jaw position, and tongue dorsum articulation.
- Compared emphasized vs. unemphasized vowels (high-front, mid-front, low).
Main Results:
- Emphasized vowels showed lower jaw position and more extreme tongue dorsum articulation.
- Low emphasized vowels: lower tongue dorsum, closer F1/F2.
- High/mid-front emphasized vowels: forward tongue, spread F1/F2.
Conclusions:
- Findings support acoustic models of speech production.
- Articulatory adjustments during emphasis align with the C/D model hypothesis regarding syllable pulse magnitude.
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