2021.09.06 20:38
Hong, Soonhyun. 2021. Roles of temporal patterns
of vowel-intrinsic cues in model identification of Korean vowels in spontaneous
speech. Studies in Phonetics, Phonology and Morphology 27.2. 321-351. This study investigates the perceptual roles of temporal patterns of vowel-intrinsic
cues to identify Korean diphthong and monophthong signals in spontaneous speech
from Seoul Corpus. Formant frequencies of vowel signals were sampled at
20%, 40%, 50%, 60%, and 80% of duration, and were averaged to be represented in
the acoustic vowel space. Diphthongs showed two different drastic transitions from
the onset to 50% of duration and from 50% to the offset, while monophthongs
showed one straight-line transition from the onset to the offset. A neural network
pattern recognition classifier was trained and tested on vowel signals, which
included diphthongs and monophthongs, with various sets of formant samplings
along duration coupled with F3, F0, and/or duration. The results show that three-
and four-sample F1 and F2 characterized vowel signals better than one- and
two-sample F1 and F2. F3, F0 and duration, when combined,
had notable perceptual influences on spectral model identification of vowels. (Inha University, Professor)
Keywords: Korean, vowels, vowel recognition, model, F1, F2, F3, F0, duration
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