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Variation in lingual coarticulation at certain juncture boundaries
Phonetica
|January 1, 1975
Summary
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.
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.
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