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ERIC Number: EJ1029415
Record Type: Journal
Publication Date: 2013-Dec
Pages: 12
Abstractor: As Provided
Reference Count: N/A
ISBN: N/A
ISSN: ISSN-1092-4388
Perception of Speech Modulation Cues by 6-Month-Old Infants
Cabrera, Laurianne; Bertoncini, Josiane; Lorenzi, Christian
Journal of Speech, Language, and Hearing Research, v56 n6 p1733-1744 Dec 2013
Purpose: The 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. Method: Several 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. Results: Infants 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). Conclusions: Six-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.
American Speech-Language-Hearing Association (ASHA). 10801 Rockville Pike, Rockville, MD 20852. Tel: 800-638-8255; Fax: 301-571-0457; e-mail: subscribe@asha.org; Web site: http://jslhr.asha.org
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A