Vowel and consonant contributions to vocal tract shape.

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The purpose of this study was to develop a method by which a vowel-consonant-vowel (VCV) utterance based on x-ray microbeam articulatory data could be separated into a vowel-to-vowel transition and a consonant superposition function. The result is a model that represents a vowel sequence as a time-dependent perturbation of the neutral vocal tract shape governed by coefficients of canonical deformation patterns. Consonants were modeled as superposition functions that can force specific portions of the vocal tract shape to be constricted or expanded, over a specific time course. The three VCVs [pa], [ta], and [ka], produced by one female speaker, were analyzed and reconstructed with the developed model. They were shown to be reasonable approximations of the original VCVs, as assessed qualitatively by visual inspection and quantitatively by calculating rms error and correlation coefficients. This establishes a method for future modeling of other speech material.

Original languageEnglish (US)
Pages (from-to)825-836
Number of pages12
JournalJournal of the Acoustical Society of America
Issue number2
Publication statusPublished - Aug 2009


ASJC Scopus subject areas

  • Medicine(all)

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