Vocal fold vibratory characteristics in normal female speakers from high-speed digital imaging

Kartini Ahmad, Yuling Yan, Diane M. Bless

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The purpose of the study was to investigate relationships between vocal fold vibrations and voice quality. Laryngeal images obtained from high-speed digital imaging (HSDI) were examined for their open-closed timing characteristics and perturbation values. A customized software delineated the glottal edges and used the Hilbert transform-based method of analysis to provide objective quantification of glottal perturbation. Overlay tracings of the transformed glottal cycles provided visual patterns on the overall vibratory dynamics. In this paper, we described the use of this method in looking at vibratory characteristics of a group of young female speakers (N = 23). We found that, females with no voice complaints and who had been perceived to have normal voices were not a homogeneous group in terms of their glottal vibratory patterns during phonation. Their vibratory patterns showed characteristics similar to exemplar voices targeted to be clear (50%), pressed (27%), breathy (15%), or a mixed quality (8%). Perturbation range in terms of cycle-to-cycle frequency and amplitude was small and did not discriminate patterns. All these patterns yielded perceptually normal voices suggesting that in normal young speakers, the level of perturbation may be more important to the judgment than the actual pattern of closure.

Original languageEnglish
Pages (from-to)239-253
Number of pages15
JournalJournal of Voice
Volume26
Issue number2
DOIs
Publication statusPublished - Mar 2012

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Vocal Cords
Voice Quality
Phonation
Vibration
Software

Keywords

  • Female voice
  • Glottal area waveform
  • High-speed laryngeal imaging
  • Vocal-fold vibration

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Speech and Hearing
  • LPN and LVN

Cite this

Vocal fold vibratory characteristics in normal female speakers from high-speed digital imaging. / Ahmad, Kartini; Yan, Yuling; Bless, Diane M.

In: Journal of Voice, Vol. 26, No. 2, 03.2012, p. 239-253.

Research output: Contribution to journalArticle

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