Perception of Speech Modulation Cues by 6-Month-Old Infants PurposeThe capacity of 6-month-old infants to discriminate a voicing contrast (/aba/–/apa/) on the basis of amplitude modulation (AM) cues and frequency modulation (FM) cues was evaluated.MethodSeveral vocoded speech conditions were designed to either degrade FM cues in 4 or 32 bands or degrade AM in 32 bands. Infants were familiarized ... Research Article
Research Article  |   December 01, 2013
Perception of Speech Modulation Cues by 6-Month-Old Infants
 
Author Affiliations & Notes
  • Laurianne Cabrera
    Université Paris Descartes, Paris, France
  • Josiane Bertoncini
    Université Paris Descartes, Paris, France
  • Christian Lorenzi
    Université Paris Descartes, Paris, France
  • Disclosure:The authors have declared that no competing interests existed at the time of publication.
    Disclosure:The authors have declared that no competing interests existed at the time of publication.×
  • Correspondence to Laurianne Cabrera: laurianne.cabrera@etu.parisdescartes.fr
  • Editor: Craig Champlin
    Editor: Craig Champlin×
  • Associate Editor: Lynne Werner
    Associate Editor: Lynne Werner×
Article Information
Development / Hearing & Speech Perception / Speech, Voice & Prosody / Research Article
Research Article   |   December 01, 2013
Perception of Speech Modulation Cues by 6-Month-Old Infants
Journal of Speech, Language, and Hearing Research, December 2013, Vol. 56, 1733-1744. doi:10.1044/1092-4388(2013/12-0169)
History: Received May 29, 2012 , Revised December 19, 2012 , Accepted April 6, 2013
 
Journal of Speech, Language, and Hearing Research, December 2013, Vol. 56, 1733-1744. doi:10.1044/1092-4388(2013/12-0169)
History: Received May 29, 2012; Revised December 19, 2012; Accepted April 6, 2013
Web of Science® Times Cited: 5

PurposeThe capacity of 6-month-old infants to discriminate a voicing contrast (/aba/–/apa/) on the basis of amplitude modulation (AM) cues and frequency modulation (FM) cues was evaluated.

MethodSeveral vocoded speech conditions were designed to either degrade FM cues in 4 or 32 bands or degrade AM in 32 bands. Infants were familiarized to the vocoded stimuli for a period of either 1 or 2 min. Vocoded speech discrimination was assessed using the head-turn preference procedure.

ResultsInfants discriminated /aba/ from /apa/ in each condition; however, familiarization time was found to influence strongly infants' responses (i.e., their preference for novel vs. familiar stimuli).

ConclusionsSix-month-old infants do not require FM cues and can use the slowest (< 16 Hz) AM cues to discriminate voicing. Moreover, 6-month-old infants can use AM cues extracted from only 4 broad-frequency bands to discriminate voicing.

Acknowledgments
This work was supported by the Agence Nationale de la Recherche and the program Investissement d'Avenir (ANR-11-IDEX-0001-02-PSL, Labex Institut d'Etude de la Cognition). The third author was supported by a grant (HEARFIN Project) from the Agence Nationale de la Recherche. We thank warmly the parents for their participation in this study.
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