15th International Congress of Phonetic Sciences (ICPhS-15)

Barcelona, Spain
August 3-9, 2003


Acoustic Analysis of the Speech of Adults with Cochlear Implants

Joanna H. Lowenstein

University of Chicago, USA

This paper presents acoustic analysis of the speech of three postlingually deafened adults with cochlear implants (CIs), from pre-implant and one, three, and six month post-activation recordings. As neither intonation nor vowels provide physical landmarks to aid articulation, and stops have physical landmarks but require precise articulation and timing, these factors should be most affected by implantation of a CI. Articulatory changes are characterized via acoustic analysis of vowel formants and duration; stop VOT and duration; and sentence F0 peaks and contours. Subject data are analyzed for individual longitudinal trends and implant effects. Trends are compared across subjects and to those found in previous studies. Analysis reveals an overall tendency towards change away from pre-implant values at one month post-activation, and back towards pre-implant values at three months and six months, for vowel duration, F0 and VOT.

Full Paper

Bibliographic reference.  Lowenstein, Joanna H. (2003): "Acoustic analysis of the speech of adults with cochlear implants", In ICPhS-15, 3113-3116.