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Effects of changing jaw height on F1 during babble: A case study at 9 months.

An empirical gap exists in our understanding of the extent that mandibular kinematics modulate acoustic changes in natural babble productions of infants. Data were recorded from a normal developing 9-month-old infant. Mandibular position was tracked from the infant during vowel and canonical babble....

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Published in:Clinical Linguistics & Phonetics Vol. 26; no. 4; pp. 311 - 330
Main Author: Steeve, Roger W.
Format: research tables/charts Journal Article
Published: Taylor & Francis Ltd Apr2012
Online Access:View this record in EBSCOhost
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      dt: Apr2012
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      pub: Taylor & Francis Ltd
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        atl: Effects of changing jaw height on F1 during babble: A case study at 9 months.
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        au: Steeve, Roger W.
      sug:
        subj:
          Infant Development
          Mandible
          Kinematics
          Human
          Wyoming
          Male
          Female
          Infant
          Speech Acoustics Classification
          Audiorecording
          Videorecording
          Correlation Coefficient
          Mann-Whitney U Test
          Descriptive Statistics
          Funding Source
          Infant: 1-23 months
          Male
          Female
      ab: An empirical gap exists in our understanding of the extent that mandibular kinematics modulate acoustic changes in natural babble productions of infants. Data were recorded from a normal developing 9-month-old infant. Mandibular position was tracked from the infant during vowel and canonical babble. Linear predictive coding analysis was used to track estimates of formant center-frequency for F1. For each sample, a correlation coefficient was computed between changes in jaw height and formant history for F1. A Mann-Whitney rank sum test reached significance for differences among coefficients for vowel and canonical babble. Coefficients for vowel babble productions were nearest to −1 with a median of r  ==  − 0.76, showing the strongest relationship between jaw position and formant history, while the median for canonical babble coefficients was r  ==  − 0.54, indicating greater contribution of the tongue and lips. This 9-month-old infant exhibited plasticity for coordinating the jaw, tongue and lips among babble types.
      pubtype: Academic Journal
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        tables/charts
        Journal Article
      ougenre: Article
    language: English
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