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Acoustic analysis of words produced by a child from 46 to 149 weeks*

Published online by Cambridge University Press:  26 September 2008

Molly Mack  and
Philip Lieberman
Molly Mack
Affiliation:
Brown University
Philip Lieberman
Affiliation:
Brown University
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Abstract

We undertook a detailed computer-implemented acoustic analysis of the speech of a child from 46 to 149 weeks. We measured overall word duration and pitch perturbation (a measure of task-induced stress), in addition to measuring within-word phonetic segments. Results revealed that (1) there were strong age-dependent decreases in word duration but only at a relatively late stage (75–149 weeks); (2) degree of fluency was not correlated with vocal stress; (3) certain segments (i.e. /k/ and /æ/) increased greatly in duration, contributing to the absence of an overall word-duration decrease at an earlier stage (46–79 weeks) and revealing the child's ability to approximate adult-like phonetic norms. Relevance to theories of phonetic development and language change are discussed.

Type
Articles
Information
Journal of Child Language , Volume 12 , Issue 3 , October 1985 , pp. 527 - 550
Copyright
Copyright © Cambridge University Press 1985

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References

REFERENCES

Branscomb, H. H. (1979). The development of a measure for task induced stress in speech. Unpublished M.A. thesis, M.I.T.Google Scholar
Brenner, M., Branscomb, H. H. & Schwartz, G. E. (1979). Psychological stress evaluator – two tests of a vocal measure. Psychophys 16. 351–7.CrossRefGoogle ScholarPubMed
Chen, M. & Wang, W. S.-Y. (1975). Sound change: actuation and implementation. Lg 51. 255–81.Google Scholar
Ferguson, C. A. & Farwell, C. B. (1975). Words and sounds in early language acquisition. Lg 51. 419–39.Google Scholar
Gilbert, J. H. V. (1977). A voice onset time analysis of apical stop production in 3-year-olds. JChLang 4. 103–10.Google Scholar
Kewley-Port, D. & Preston, M. S. (1974). Early apical stop production: a voice onset time analysis. JPhon 2. 195–210.Google Scholar
Klatt, D. (1976). Linguistic uses of segmental duration in English: acoustic and perceptual evidence. JAcS 59. 1208–21.Google ScholarPubMed
Konefal, J. A., Fokes, J. & Bond, Z. S. (1982). Children's use of syntactic vowel duration. JPhon 10. 361–6.Google Scholar
Kubaska, C. A. & Keating, P. A. (1981). Word duration in early child speech. JSHR 24. 615–21.Google ScholarPubMed
Lieberman, P. (1967). Intonation, perception, and language. Cambridge, Mass.: M.I.T. Press.Google Scholar
Lieberman, P. (1984). The biology and evolution of language. Cambridge, Mass.: Harvard University Press.Google Scholar
Lisker, L. (1957). Closure duration and the intervocalic voiced-voiceless distinction in English. Lg 33. 42–9.Google Scholar
Lisker, L. & Abramson, A. S. (1964). A cross-language study of voicing in initial stops: acoustic measurements. Word 20. 384–422.CrossRefGoogle Scholar
Mack, M. (1980–1981). English and French word-final stop consonants: monolingual and bilingual production. Brown University Working Papers in Linguistics 4. 66–72.Google Scholar
Mack, M. (1983). Psycholinguistic consequences of early bilingualism: a comparative study of the performance of English monolinguals and French-English bilinguals in phonetics, syntax, and semantics experiments. Unpublished Ph.D. dissertation, Brown University.Google Scholar
Macken, M. A. & Barton, D. (1979). The acquisition of the voicing contrast in English: a study of voice onset time in word-initial stop consonants. JChLang 7. 41–74.Google Scholar
Naeser, M. A. (1970). The American child's acquisition of differential vowel duration. Tech. Rep. 144. Madison, Wisconsin.: University of Wisconsin.Google Scholar
Oller, D. K. & Smith, B. L. (1977). Effect of final-syllable position on vowel duration in infant babbling. JAcS 62. 994–7.Google ScholarPubMed
Peterson, G. E. & Lehiste, I. (1960). Duration of syllabic nuclei in English. JAcS 32. 693–703.Google Scholar
Smith, B. L. (1977). Temporal aspects of English speech production: a developmental perspective. JPhon 6. 37–69.Google Scholar
Smith, N. V. (1973). The acquisition of phonology: a case study. Cambridge: C.U.P.Google Scholar
Umeda, N. (1975). Vowel duration in American English. JAcS 58. 434–45.Google ScholarPubMed
Zlatin, M. A. (1974). Voicing contrast: perceptual and productive voice onset time characteristics of adults. JAcS 56. 981–94.Google ScholarPubMed