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This study investigates spectral characteristics of the release bursts in Korean alveolar stops in terms of intensity, center of gravity, and skewness of the spectra of the release burst across phonation types and speakers. The results showed that there was no significant difference in intensity, center of gravity, or skewness across phonation types but a significant difference across speakers. This means that difference in phonation type does not lead to any significant difference in the spectra of the release burst. This study suggests that difference in the spectral characteristics of the release burst across phonation types can be ignored in speech synthesis or speech recognition.