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Phonemic Resetting Versus Postural Adjustments In The Speech Of Cochlear Implant Users: An Exploration Of Voice-Onset Time, Harlan Lane, Jane Wozniak, Melanie Matthies, Mario Svirsky, Joseph Perkell
Phonemic Resetting Versus Postural Adjustments In The Speech Of Cochlear Implant Users: An Exploration Of Voice-Onset Time, Harlan Lane, Jane Wozniak, Melanie Matthies, Mario Svirsky, Joseph Perkell
Harlan Lane
Voice-onset time (VOT) was measured in plosive-initial syllables uttered by five cochlear implant users prior to and repeatedly at intervals after activation of their speech processors. In "short-term" experiments, the elicitation set was read after the subject's processor had been off for 24 h, then turned on, then off again. Four out of five implant users increased voiceless and/or voiced VOTc (VOT corrected for changes in syllable duration) from preimplant baselines to final recordings made 1–3 years later. Measured acoustic correlates of speech "posture" (average SPL, F0, and low-frequency spectral slope) changed concurrently. Results in the short-term study were largely …
A Preliminary Study Of The Effects Of Cochlear Implants On The Production Of Sibilants, Melanie L. Matthies, Mario A. Svirsky, Harlan L. Lane, Joseph S. Perkell
A Preliminary Study Of The Effects Of Cochlear Implants On The Production Of Sibilants, Melanie L. Matthies, Mario A. Svirsky, Harlan L. Lane, Joseph S. Perkell
Harlan Lane
The potential influence of auditory information in the production of /s/ and /ʃ/ was explored for postlingually deafened adults with four-channel Ineraid cochlear implants. Analyses of the spectra of the sibilant sounds were compared for speech obtained prior to implant activation, after early implant use and after 6 months of use. In addition, the output of the Ineraid device (measured at each of the four electrodes) was analyzed with pre- and postactivation speech samples to explore whether the speech production changes were potentially audible to the cochlear-implant user. Results indicated that subjects who showed abnormally low or incorrect contrast between …
Speech Deterioration In Postlingually Deafened Adults, Harlan Lane, Jane Webster
Speech Deterioration In Postlingually Deafened Adults, Harlan Lane, Jane Webster
Harlan Lane
Postlingually deafened adults reading the Rainbow Passage differed from hearing-control subjects in producing greater pitch variability and mean pitch on stressed and unstressed vowels, greater fluctuations in pitch within sentences, less correlation of intrinsic pitch with vowel height and slower temporal parameters. When reading the Phonetic Inventory Sentences, they revealed less differentiation of place of articulation in fricative and plosive consonants. The present findings, taken together with those of longitudinal and implant studies, are applied to constraining models of the role of self hearing in the elaboration of speech.