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Phonetic enhancement of sibilants in infant-directed speech
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10.1121/1.3436529
/content/asa/journal/jasa/128/1/10.1121/1.3436529
http://aip.metastore.ingenta.com/content/asa/journal/jasa/128/1/10.1121/1.3436529

Figures

Image of FIG. 1.
FIG. 1.

Example of the coding system. The top tier was used to mark the point vowels. The edges of the frications of the sibilants were marked in the second tier, while on the third tier it was noted whether there was a vowel preceding and/or following the sibilant, in order to extract formants only in the case when there was a vowel. The fourth tier was used for comments. In the fifth tier, the number of syllables in the sentence was noted, while the sixth encoded the register (in this case, “i,” for IDS).

Image of FIG. 2.
FIG. 2.

The top panel is a spectrum (distribution of intensity over frequency) for /s/ and the bottom one a spectrum for /ʃ/. The peak location for /ʃ/ is usually much lower than that for /s/, and /ʃ/ has more evenly distributed energy. As a result, M1 is higher in /s/ than /ʃ/.

Image of FIG. 3.
FIG. 3.

Averages and 95% confidence intervals for Rate of speech, Average pitch, and Pitch excursions by register. Given that for Rate and Excursions there is no interaction with the child’s age, data are collapsed across the groups. In contrast, caregivers of the 12–14 month-olds (“o”) addressed their child with an average pitch that was significantly higher to that used by caregivers of the younger infants (“y”).

Tables

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TABLE I.

Number of analyzable tokens in each category and dyad (subset).

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TABLE II.

Number of analyzable tokens in each category and dyad (continued).

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TABLE III.

Number of analyzable tokens in each category and dyad (continued).

Generic image for table
TABLE IV.

Summary of linear regression models with M1 as the outcome, and Average Pitch, pitch Excursion, Rate of Speech, phonetic Label, Register, and age Group as predictors. Significance at the 0.05 level is signaled with ; 0.01 with ; 0.001 with .

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/content/asa/journal/jasa/128/1/10.1121/1.3436529
2010-07-16
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Phonetic enhancement of sibilants in infant-directed speech
http://aip.metastore.ingenta.com/content/asa/journal/jasa/128/1/10.1121/1.3436529
10.1121/1.3436529
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