Perception and production of /r/ allophones improve with hearing from a cochlear implant

Title:
Perception and production of /r/ allophones improve with hearing from a cochlear implant
Creator:
Matthies, Melanie L. (Author)
Guenther, Frank H. (Author)
Denny, Margaret (Author)
Perkell, Joseph S. (Author)
Burton, Ellen (Author)
Vick, Jennell (Author)
Lane, Harlan (Author)
Tiede, Mark (Author)
Zandipour, Majid (Author)
Language:
English
Publisher:
Acoustical Society of America, November 01, 2008
Type of resource:
Text
Genre:
Articles
Format:
electronic
Digital origin:
born digital
Abstract/Description:
Tongue shape can vary greatly for allophones of /r/ produced in different phonetic contexts but the primary acoustic cue used by listeners, lowered F3, remains stable. For the current study, it was hypothesized that auditory feedback maintains the speech motor control mechanisms that are constraining acoustic variability of F3 in /r/; thus the listener's percept remains /r/ despite the range of articulatory configurations employed by the speaker. Given the potential importance of auditory feedback, postlingually deafened speakers should show larger acoustic variation in /r/ allophones than hearing controls, and auditory feedback from a cochlear implant could reduce that variation over time. To test these hypotheses, measures were made of phoneme perception and of production of tokens containing /r/, stop consonants, and /r/+stop clusters in hearing controls and in eight postlingually deafened adults pre- and postimplant. Postimplant, seven of the eight implant speakers did not differ from the control mean. It was also found that implant users' production of stop and stop+/r/ blend improved with time but the measured acoustic contrast between these was still better in the control speakers than for the implant group even after the implant users had experienced a year of improved auditory feedback.
Comments:
The following article appeared in J. Acoust. Soc. Am. Volume 124, Issue 5, pp. 3191-3202 (November 2008) and may be found at http://dx.doi.org/10.1121/1.2987427
Subjects and keywords:
Hearing
Intelligibility of speech
Cochlear implants
Allophones
hearing aids
/r/ allophones
F3
auditory feedback
Psychology
Speech and Hearing Science
Permanent Link:
http://hdl.handle.net/2047/d20000860

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