Auditory-Visual Infant Directed Speech in Japanese and English

Takaaki Shochi, Kaoru Sekiyama, Nicole Lees, Mark Boyce, Roland Goecke, Denis Burnham

    Research output: A Conference proceeding or a Chapter in BookConference contributionpeer-review

    4 Citations (Scopus)
    38 Downloads (Pure)


    The aim of this project is to compare (i) the acoustic vs. visual characteristics of infant-directed speech (IDS), (ii) IDS vs adult-directed speech (ADS), and (iii) the acoustic/visual characteristics of IDS and ADS cross-linguistically, in Australian English (AusE) vs Japanese. Acoustic data are presented along with preliminary visual data. Native AusE and Japanese speaking mothers spoke to their 4- to 9-month-old infants and another adult using target words containing one of four vowels [a,i,u,o]. Results show higher F0 mean and greater F0 variation for IDS than ADS in both language groups, and longer vowel duration in IDS than ADS but this was only significantly so for the AusE mothers. Finally, there was a tendency for vowel hyper-articulation in AusE mothers IDS, but for vowel hypo-articulation in Japanese mothers IDS, and overall vowel hyperarticulation was greater in AusE than Japanese IDS. Preliminary visual data suggest that there appears to be, contrary to what would be expected, a substantial decrement in visual vowel lip area in Japanese IDS compared to ADS, a finding that is in concert with tendency for vowel hypo-articulation in Japanese than English IDS.

    Original languageEnglish
    Title of host publicationAuditory-Visual Speech Processing (AVSP) 2009
    EditorsBarry-John Theobold, Richard Harvey
    Place of PublicationNorwich, UK
    PublisherUniversity of East Anglia
    Number of pages6
    ISBN (Print)9780956345202
    Publication statusPublished - 2009
    Event2009 Conference on Audio Visual Speech Processing, AVSP 2009 - Norwich, United States
    Duration: 10 Sept 200913 Sept 2009


    Conference2009 Conference on Audio Visual Speech Processing, AVSP 2009
    Country/TerritoryUnited States


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