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Interarticulator timing control during inspiratory phonation.

Manwa L Ng1, Yang Chen, Stephen Wong

  • 1Speech Science Laboratory, Division of Speech and Hearing Sciences, The University of Hong Kong, Sai Ying Pun, Hong Kong.

Journal of Voice : Official Journal of the Voice Foundation
|March 30, 2010
PubMed
Summary
This summary is machine-generated.

Cantonese speakers produced speech sounds less accurately using inspiratory phonation (IP) compared to expiratory phonation (EP). This difference in phonation impacts articulatory timing and voice onset time (VOT) for speech production.

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Area of Science:

  • Phonetics
  • Speech Science
  • Linguistics

Background:

  • Cantonese speakers distinguish word meaning using aspirated and unaspirated stops.
  • Expiratory phonation (EP) is the typical method for producing speech sounds.
  • Inspiratory phonation (IP) involves producing sounds during inhalation, which is less common in speech.

Purpose of the Study:

  • To compare the production of Cantonese stops using expiratory phonation (EP) and inspiratory phonation (IP).
  • To examine interarticulator timing during stop production with EP and IP.
  • To compare voice onset time (VOT) and listener identification of stops produced with EP and IP.

Main Methods:

  • 15 male and 15 female Cantonese speakers produced aspirated and unaspirated voiceless stops (/p(h), t(h), k(h), p, t, k/) with the vowel /a/ using EP and IP.
  • Voice onset time (VOT) was measured acoustically.
  • 10 naïve listeners identified isolated speech samples of these stop productions.

Main Results:

  • Listeners identified IP stops with reduced accuracy, particularly in perceiving aspiration.
  • IP stops had significantly shorter VOT compared to EP stops.
  • Place of articulation affected VOT, with velar stops having longer VOT than bilabial and alveolar stops for both phonation types.

Conclusions:

  • Inspiratory phonation (IP) leads to shorter voice onset time (VOT) compared to expiratory phonation (EP).
  • The articulatory-phonatory coordination differs between IP and EP.
  • This suggests a discrepancy in timing control between articulators during IP.