The domain of laryngeal feature effects in Chonnam Korean

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Abstract
This paper investigates the domain of two aspects of laryngeal features in the Chonnam dialect of Korean. In Korean, voiceless lenis stops, /p,t,k/, sometimes become voiced between voiced segments. Traditionally, this voicing has been discussed as occurring “within words.” However, word-initial lenis stops are sometimes voiced at fast tempo, suggesting that the domain is some prosodic unit such as the “accentual phrase” [S. A. Jun, J. Acoust. Soc. Am. Suppl. 1 85, S98 (1989)]. To test this, utterances of various constructions produced by three Chonnam speakers at three different tempi (slow, normal, fast) were recorded. An electroglottograph (EGG) was recorded simultaneously with the audio wave. In general, the audio waveform and EGG agreed: Either both showed voicing, or neither did. Only a few cases showed a discrepancy and, for almost all of these cases, the EGG data showed what was expected from the accentual phrasing. Since the number of accentual phrases within an utterance varied with the speech rate (the faster, the fewer), voicing also varied. Preliminary results of VOT measurements in aspirated stops show a similar effect of the accentual phrase boundary: VOT was longer at the beginning of an accentual phrase than medially. Thus the domain of all laryngeal feature effects seems to be the accentual phrase rather than the word.

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