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KMID : 1022420170090040027
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Phonetics and Speech Sciences
2017 Volume.9 No. 4 p.27 ~ p.34
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A study on the release burst spectra of the voiceless plosives from the English and Korean spontaneous speech corpus
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Hwang Sun-Mi
Yoon Kyu-Chul
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Abstract
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The purpose of this work is to examine the English and Korean voiceless plosives from the Buckeye[15] and Seoul[16] corpus in terms of their static spectral characteristics. The plosives were automatically extracted by a Praat script. In order to estimate the percent correctness in the classification of the plosives, discriminant analyses were performed whose trainings were based on four spectral moments, i.e. the center of gravity, variance, skewness and kurtosis as suggested in [6]. Another set of discriminant analyses were performed based on the spectral tilts. In the last set of analyeses, the spectral moments and tilts were both used in the training. Results showed that the correct classification rate did not exceed around 65% in the best case, which suggested that phonetic cues other than the release burst would be necessary including the dynamic spectral aspects and vowel-onset cues.
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KEYWORD
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Seoul corpus, Buckeye corpus, Korean, English, plosives, moments, spectral tilts, discriminant analysis
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