Edward Khouw

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This study investigated measurements related to average f0 level and f0 change over eight consecutive sections of the whole vocalic segment, for their roles as both acoustic and perceptual correlates of Cantonese lexical tones. Twenty-four CV Cantonese words, making up four sets of words that minimally contrasted in the six Cantonese tones (tones 55, 25,(More)
OBJECTIVE This study investigated five acoustic parameters of fundamental frequency (f0), one related to average f0 level and four related to change of f0 (f0 change) over four consecutive quarters of the vocalic segment, for their roles as acoustic correlates to the perception of Cantonese lexical tones produced by profoundly hearing-impaired speakers. (More)
PURPOSE This study investigated formant frequencies for their role as acoustic and perceptual correlates to the place of articulation of Cantonese final stops produced by profoundly hearing impaired speakers. METHOD Speakers were 10 Cantonese adolescents (mean age=13;5 [years;months]) who were profoundly hearing impaired (HI). Control speakers were 10(More)
This study investigated the role of Voice Onset Time (VOT) as perceptual cue to the aspiration contrast of Cantonese initial stops produced by adolescent profoundly hearing impaired speakers. Speakers with normal hearing signalled the aspiration contrast through VOT differences. Hearing impaired speakers produced initial stops with no significant VOT(More)
This study investigated mid-vocalic F1 and F2 frequencies as cues to the perception of three Cantonese vowels (/a/, /i/, /Á/) in monosyllabic words produced by ten profoundly hearing impaired and ten normal hearing adolescents. For the control group, there were significant differences in F1 and F2 frequencies among the three vowels as expected. In contrast,(More)
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