Abstract:
:An acoustic-perceptual investigation was performed on fundamental frequency (F(0)) contours associated with lexical tones in the speech of one 21-year-old adult speaker of Thai who did not start speaking until age 7. Thai is a tone language with five lexically contrastive tones-mid, low, falling, high, and rising. Measures of F, were taken from a minimal set of five monosyllabic citation forms. Results from phonemic identification tests indicated that AY exhibited a selective disruption in the production of Thai tones. In contrast to the normal Thai tone space, AY's tone space was reduced to three tones-mid, low, and rising. Acoustic analysis revealed that AY�s aberrant F(0) contours for the falling and high tones were virtually identical in terms of height and overall shape; both exhibited a slow, steady fall in F(0) in the upper range of AY's tone space. Listeners' failure to perceive AY's intended productions of the falling and high tones confirmed the perceptual importance of rapid change in F(0) slope in the Thai tone space. Findings are discussed with reference to the chronological order in which Thai tones are acquired in normal language development.
journal_name
Clin Linguist Phonjournal_title
Clinical linguistics & phoneticsauthors
Gandour J,Petty SH,Dardarananda Rdoi
10.3109/02699208908985281subject
Has Abstractpub_date
1989-01-01 00:00:00pages
191-202issue
2eissn
0269-9206issn
1464-5076journal_volume
3pub_type
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