• 대한음성학회지:말소리
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• 제21_24호
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• pp.3-24
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• 1992

This study was designed to investigate the changes of phonological processes in normal Korean children aged from 2- to 6-years. Forty eight children who lived in Seoul or Kyung-Ki do were tested with a picture articulation test and their articulation errors including omissions, additions and substitutions were coded into phonological processes. Those phonological processes were discussed in several ways: syllable structure, place, manner, assimilation, tenseness, and aspiration of sounds. Data were analyzed by two ways: (1) number of subjects who showed each process and (2) percentage of occurrence of each process. Analyses in omission-addition processes demonstrated that postvocalic omission occurred most frequently, followed by velar-, alveolar-, and glottal omission. Analyses in substitution processes showed that fronting (palatal and velar), backing (alveolar), and alveolization occurred most frequently in terms of the place of sounds. In terms of assimilation, alveolar-, stopping, and aspiration assimilation occurred frequently. Analyses by the tenseness and aspiration showed similar occurrences among the 4 processes, with slightly higher occurrences in tensing and aspiration than lanxing and deaspiration. All of the processes decreased by age. The numbers of the processes showed by more than half of the children or exceeded 10％ of occurrence were 20 in 2-years of age, 10 in 3-years of age, 1 in 4-years of age, and none in ages of 5 and 6.

• 말소리와 음성과학
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• 제7권3호
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• pp.45-53
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• 2015

The current study investigated CVCC syllables in spontaneous American English speech to find out whether such syllables are produced as phonological units with a string of segments, showing a hierarchical structure. Transcribed data from the Buckeye Speech Corpus was used for the analysis in this study. The result of the current study showed that the constituents within a CVCC syllable as a phonological unit may have phonetic variations (namely, the final coda may undergo deletion). First, voiceless alveolar stops were the most frequently deleted when they occurred as the second final coda consonants of a CVCC syllable; this deletion may be an intermediate process on the way from the abstract form CVCC (with the rime VCC) to the actual pronunciation CVC (with the rime VC), a production strategy employed by some individual speakers. Second, in the internal structure of the rime, the proportion of deletion of the final coda consonant depended on the frequency of the word rather than on the position of postvocalic consonants on the sonority hierarchy. Finally, the segment following the consonant cluster proved to have an effect on the reduction of that cluster; more precisely, the following contrast was observed between obstruents and non-obstruents, reflecting the effect of sonority: when the segment following the consonant cluster was an obstruent, the proportion of deletion of the final coda consonant was increased. Among these results, the effect of word frequency played a critical role for promoting the deletion of the second coda consonant for clusters in CVCC syllables in spontaneous speech. The current study implies that the structure of syllables as phonological units can vary depending on individual speakers' lexical representation.