Vowel acoustic space development in children: a synthesis of acoustic and anatomic data.
PURPOSE: This article integrates published acoustic data on the development of vowel production. Age specific data on formant frequencies are considered in the light of information on the development of the vocal tract (VT) to create an anatomic-acoustic description of the maturation of the vowel ac...
| Publicado en: | Journal of Speech, Language & Hearing Research Vol. 50; no. 6; pp. 1510 - 1546 |
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| Formato: | Journal Article |
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American Speech-Language-Hearing Association
Dec2007
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105885726&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105885726 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10924388 1SM jtl: Journal of Speech, Language & Hearing Research issn: 10924388 maglogo: N pubinfo: dt: Dec2007 vid: 50 iid: 6 pid: 42 pub: American Speech-Language-Hearing Association place: Rockville, Maryland artinfo: ui: 105885726 2009731663 NLM18055771 105885726 ppf: 1510 ppct: 36 formats: fmt: @attributes: type: P tig: atl: Vowel acoustic space development in children: a synthesis of acoustic and anatomic data. aug: sug: subj: Language Development Larynx Anatomy and Histology Mouth Anatomy and Histology Pharynx Anatomy and Histology Phonetics Speech Acoustics Speech Perception Child Female Infant Magnetic Resonance Imaging Male Speech Production Measurement Child: 6-12 years Infant: 1-23 months Female Male ab: PURPOSE: This article integrates published acoustic data on the development of vowel production. Age specific data on formant frequencies are considered in the light of information on the development of the vocal tract (VT) to create an anatomic-acoustic description of the maturation of the vowel acoustic space for English. METHOD: Literature searches identified 14 studies reporting data on vowel formant frequencies. Data on corner vowels are summarized graphically to show age- and sex- related changes in the area and shape of the traditional vowel quadrilateral. CONCLUSIONS: Vowel development is expressed as follows: (a) establishment of a language-appropriate acoustic representation (e.g., F1-F2 quadrilateral or F1-F2-F3 space), (b) gradual reduction in formant frequencies and F1-F2 area with age, (c) reduction in formant-frequency variability, (d) emergence of male-female differences in formant frequency by age 4 years with more apparent differences by 8 years, (e) jumps in formant frequency at ages corresponding to growth spurts of the VT, and (f) a decline of f[0] after age 1 year, with the decline being more rapid during early childhood and adolescence. Questions remain about optimal procedures for VT normalization and the exact relationship between VT growth and formant frequencies. Comments are included on nasalization and vocal fundamental frequency as they relate to the development of vowel production. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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