Abstract:Vowel productions of 2 Mandarin-speaking children were audio recorded in their homes with picture naming tasks once every 3 months, from birth to 9 years old. The present study is the ninth year of a longitudinal observation. Major findings in this stage are: 1) The trend of decrease in formant values was continuously observed in the boy subject. As for the girl subject, it is not until nine years old, the obvious decrease in formant values was found, especially in F1; 2) F1 values are more stable than F2 valu… Show more
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