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Related Experiment Videos

Articulation of extreme formant patterns for emphasized vowels.

Donna Erickson1

  • 1Gifu City Women's College, Gifu City, Gifu, Japan. erickson@gifu-cwc.ac.jp

Phonetica
|September 17, 2002
PubMed
Summary
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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:

Related Experiment Videos

  • 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.