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Related Experiment Videos

Relation between nasal/voice accelerometric values and interval estimates of hypernasality.

A R Reich, M A Redenbaugh

    The Cleft Palate Journal
    |October 1, 1985
    PubMed
    Summary

    Accelerometric ratios accurately measure hypernasality in children when speech includes non-nasal sounds. This method shows high correlation with expert judgments, but not with nasal-heavy speech.

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    Area of Science:

    • Speech-language pathology
    • Biomedical engineering
    • Acoustics

    Background:

    • Hypernasality is a speech disorder affecting resonance.
    • Objective measurement of hypernasality is crucial for diagnosis and treatment.
    • Current methods may lack precision or require subjective interpretation.

    Purpose of the Study:

    • To evaluate the efficacy of accelerometric ratios in quantifying hypernasality.
    • To compare accelerometric data with subjective hypernasality judgments.

    Main Methods:

    • Obtained nasal/throat accelerometric ratios from 15 children (12 hypernasal, 3 normal).
    • Recorded simultaneous audio for hypernasality assessment using an equal-appearing-interval (EAI) scale.
    • Correlated accelerometric ratios with EAI judgments across different speech stimuli.

    Main Results:

    • High correlations were found between accelerometric ratios and EAI judgments for sentences with obstruents, semivowels, and vowels.
    • No significant correlation was observed when sentences primarily contained nasal phonemes and vowels.

    Conclusions:

    • Accelerometric ratios show promise as an objective measure for hypernasality in children.
    • The effectiveness of this method is dependent on the phonetic content of the speech sample.
    • Further research is needed to refine the technique for all speech contexts.

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