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Variation in lingual coarticulation at certain juncture boundaries.

L S Su, R Daniloff, R Hammarberg

    Phonetica
    |January 1, 1975
    PubMed
    Summary
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    Short pauses do not affect nasal-vowel coarticulation, but longer pauses at higher-level junctures reduce it. This study examined coarticulation variations in American English [m] sounds.

    Area of Science:

    • Phonetics
    • Acoustic Phonetics
    • Speech Science

    Background:

    • Coarticulation describes how speech sounds influence each other.
    • Nasal-vowel coarticulation is crucial for speech intelligibility.
    • Juncture boundaries can affect speech sound production.

    Purpose of the Study:

    • To investigate coarticulatory variations in the acoustic spectra of the [m] sound.
    • To determine the impact of juncture boundaries on nasal-vowel coarticulation in American English.
    • To analyze how different pause levels influence nasal-vowel interactions.

    Main Methods:

    • Acoustic analysis of [m] sounds in various [mV] contexts.
    • Dispersion analysis to quantify coarticulatory variation in [m] spectra.
    • Examination of speech samples under varying juncture boundary conditions.

    Related Experiment Videos

    Main Results:

    • Low-level junctures with short pauses did not disrupt nasal-vowel coarticulation.
    • Higher-level junctures, often marked by long pauses, significantly reduced nasal-vowel coarticulation.
    • Juncture type and pause duration are key factors influencing coarticulation.

    Conclusions:

    • Juncture boundaries play a significant role in modulating nasal-vowel coarticulation.
    • Speech production is sensitive to prosodic structure, particularly pause length.
    • Understanding these variations is important for speech synthesis and analysis.