The speech of a postlingually deafened preadolescent was recorded and analyzed while a single‐electrode cochlear implant (3M/House) was in operation, on two occasions after it failed (1 day and 18 days) and on three occasions after stimulation of a multichannel cochlear implant (Nucleus 22) (1 day, 6 months, and 1 year). Listeners judged 3M/House tokens to be the most normal until the subject had one year’s experience with the Nucleus device. Spectrograms showed less aspiration, better formant definition and longer final frication and closure duration post‐Nucleus stimulation (6 MO. NUCLEUS and 1 YEAR NUCLEUS) relative to the 3M/House and no auditory feedback conditions. Acoustic measurements after loss of auditory feedback (1 DAY FAIL and 18 DAYS FAIL) indicated a constriction of vowel space. Appropriately higher fundamental frequency for stressed than unstressed syllables, an expansion of vowel space and improvement in some aspects of production of voicing, manner and place of articulation were noted one year post‐Nucleus stimulation. Loss of auditory feedback results are related to the literature on the effects of postlingual deafness on speech. Nucleus and 3M/House effects on speech are discussed in terms of speech production studies of single‐electrode and multichannel patients.
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September 1992
September 01 1992
Speech changes following reimplantation from a single‐channel to a multichannel cochlear implant
Alexandra Economou;
Alexandra Economou
City College, CUNY, New York, New York 10031
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Vivien C. Tartter;
Vivien C. Tartter
City College, CUNY, New York, New York 10031
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Patricia M. Chute;
Patricia M. Chute
Cochlear Implant Center, Manhattan Eye, Ear and Throat Hospital, New York, New York 10021
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Sharon A. Hellman
Sharon A. Hellman
Cochlear Implant Center, Manhattan Eye, Ear and Throat Hospital, New York, New York 10021
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J. Acoust. Soc. Am. 92, 1310–1323 (1992)
Article history
Received:
August 09 1991
Accepted:
May 20 1992
Citation
Alexandra Economou, Vivien C. Tartter, Patricia M. Chute, Sharon A. Hellman; Speech changes following reimplantation from a single‐channel to a multichannel cochlear implant. J. Acoust. Soc. Am. 1 September 1992; 92 (3): 1310–1323. https://doi.org/10.1121/1.403925
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