Investigating the relationship between glottal area waveform shape and harmonic magnitudes through computational modeling and laryngeal high-speed videoendoscopy

Gang Che, Robin A. Samlan, Jody Kreiman, Abeer Alwan

Research output: Contribution to journalConference article

4 Scopus citations

Abstract

The glottal open quotient (OQ) is often associated with the amplitude of the first source harmonic relative to the second (H1*- H2*), which is assumed to be one cause of a change in vocal quality along a breathy-to-pressed continuum. The association between OQ and H1*-H2* was investigated in a group of 5 human subjects and also in a computational voice production simulation. The simulation incorporated a parametric voice source model into a nonlinear source-filter framework. H1*-H2* and OQ were measured synchronously from audio recordings and high-speed laryngeal videoendoscopy of "glide" phonations in which quality varied continuously from breathy to pressed. Analyses of individual speakers showed large differences in the relationship between OQ and H1*-H2*. The variability in laryngeal high-speed data was consistent with simulation results, which showed that the relationship between OQ and H1*-H2* depended on mean glottal area, a parameter associated with the degree of source-filter interaction and not directly measurable from high-speed video of the vocal folds. In addition, H1*-H2* may change with increasing glottal gap size; this change contributes to the observed variability in the relationship between H1*-H2* and OQ.

Original languageEnglish (US)
Pages (from-to)3216-3220
Number of pages5
JournalProceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH
StatePublished - Jan 1 2013
Externally publishedYes
Event14th Annual Conference of the International Speech Communication Association, INTERSPEECH 2013 - Lyon, France
Duration: Aug 25 2013Aug 29 2013

Keywords

  • Glottal area waveform
  • Harmonic magnitudes
  • Laryngeal high-speed videoendoscopy
  • Open quotient

ASJC Scopus subject areas

  • Language and Linguistics
  • Human-Computer Interaction
  • Signal Processing
  • Software
  • Modeling and Simulation

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