Vowels and tones in Infant Directed Speech: hyperarticulation for both, but different developmental patterns

Nan Xu, Denis Burnham, Christine Kitamura

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionResearchpeer-review

Abstract

A number of studies have shown that mothers hyperarticulate vowels in their Infant Directed Speech to their 6-month-old infants. Here we investigate the possibility that such hyperarticulation might also occur for lexical tone for mother-infant dyads in tone language environments, and possible changes in mothers' vowel and such tone hyperarticulation in IDS across the infant's first year. IDS from a total of 22 native Cantonese speaking mothers was recorded, 11 when their infants were 3-, 6-, and 9-month-old, and another 11 when their infants were 6-, 9-, and 12-monthold, and mothers asked to use nine target words in their speech; one for each of the three corner vowels HI, /a/ and /u/), and another six for each of the Cantonese tones on the vowel HI. Vowel hyperarticulation was investigated using first and second formant values, and tones using fundamental frequency onset and offset[1]. Preliminary results for 5 mothers presented here indicate that both vowel and tone hyperarticulation occur, but that while vowel hyperarticulation emerges around 6 months and increases from 6 to 9 to 12 month, tone hyperarticulation occurs only at 6 and 9 months. The results suggest that, as for vowels, tone space is hyperarticulated in IDS, but returns to Adult Directed Speech levels earlier for tones than vowels. Possible reasons for this are discussed, as are future studies with other tone languages with smaller tonal inventories.

LanguageEnglish
Title of host publicationInternational Speech Communication Association - 8th Annual Conference of the International Speech Communication Association, Interspeech 2007
Place of PublicationAntwerp, Belgium
Publisher8th Annual Conference of the International Speech Communication Association
Pages329-332
Number of pages4
Volume1
ISBN (Print)9781605603162
Publication statusPublished - 2007
EventInterspeech Conference 2007 - Antwerp, Belgium
Duration: 27 Aug 200731 Aug 2007

Conference

ConferenceInterspeech Conference 2007
CountryBelgium
CityAntwerp
Period27/08/0731/08/07

Fingerprint

infant
Fundamental Frequency
Target
language
dyad
Speech
speaking
Language
Values

Keywords

  • Infant directed speech
  • vowel hyperarticulation
  • tone
  • PERCEPTUAL REORGANIZATION
  • CHINESE

Cite this

Xu, N., Burnham, D., & Kitamura, C. (2007). Vowels and tones in Infant Directed Speech: hyperarticulation for both, but different developmental patterns. In International Speech Communication Association - 8th Annual Conference of the International Speech Communication Association, Interspeech 2007 (Vol. 1, pp. 329-332). Antwerp, Belgium: 8th Annual Conference of the International Speech Communication Association.
Xu, Nan ; Burnham, Denis ; Kitamura, Christine. / Vowels and tones in Infant Directed Speech : hyperarticulation for both, but different developmental patterns. International Speech Communication Association - 8th Annual Conference of the International Speech Communication Association, Interspeech 2007. Vol. 1 Antwerp, Belgium : 8th Annual Conference of the International Speech Communication Association, 2007. pp. 329-332
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abstract = "A number of studies have shown that mothers hyperarticulate vowels in their Infant Directed Speech to their 6-month-old infants. Here we investigate the possibility that such hyperarticulation might also occur for lexical tone for mother-infant dyads in tone language environments, and possible changes in mothers' vowel and such tone hyperarticulation in IDS across the infant's first year. IDS from a total of 22 native Cantonese speaking mothers was recorded, 11 when their infants were 3-, 6-, and 9-month-old, and another 11 when their infants were 6-, 9-, and 12-monthold, and mothers asked to use nine target words in their speech; one for each of the three corner vowels HI, /a/ and /u/), and another six for each of the Cantonese tones on the vowel HI. Vowel hyperarticulation was investigated using first and second formant values, and tones using fundamental frequency onset and offset[1]. Preliminary results for 5 mothers presented here indicate that both vowel and tone hyperarticulation occur, but that while vowel hyperarticulation emerges around 6 months and increases from 6 to 9 to 12 month, tone hyperarticulation occurs only at 6 and 9 months. The results suggest that, as for vowels, tone space is hyperarticulated in IDS, but returns to Adult Directed Speech levels earlier for tones than vowels. Possible reasons for this are discussed, as are future studies with other tone languages with smaller tonal inventories.",
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Xu, N, Burnham, D & Kitamura, C 2007, Vowels and tones in Infant Directed Speech: hyperarticulation for both, but different developmental patterns. in International Speech Communication Association - 8th Annual Conference of the International Speech Communication Association, Interspeech 2007. vol. 1, 8th Annual Conference of the International Speech Communication Association, Antwerp, Belgium, pp. 329-332, Interspeech Conference 2007, Antwerp, Belgium, 27/08/07.

Vowels and tones in Infant Directed Speech : hyperarticulation for both, but different developmental patterns. / Xu, Nan; Burnham, Denis; Kitamura, Christine.

International Speech Communication Association - 8th Annual Conference of the International Speech Communication Association, Interspeech 2007. Vol. 1 Antwerp, Belgium : 8th Annual Conference of the International Speech Communication Association, 2007. p. 329-332.

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionResearchpeer-review

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Xu N, Burnham D, Kitamura C. Vowels and tones in Infant Directed Speech: hyperarticulation for both, but different developmental patterns. In International Speech Communication Association - 8th Annual Conference of the International Speech Communication Association, Interspeech 2007. Vol. 1. Antwerp, Belgium: 8th Annual Conference of the International Speech Communication Association. 2007. p. 329-332