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Real-time feedback control of voice in cochlear implant recipients.

Publication ,  Journal Article
Gautam, A; Brant, JA; Ruckenstein, MJ; Eliades, SJ
Published in: Laryngoscope Investig Otolaryngol
December 2020

OBJECTIVES: To evaluate feedback-dependent vocal control in cochlear implant patients using pitch-shifted auditory feedback. METHODS: Twenty-three CI recipients with at least 6 months of implant experience were enrolled. Vocal recordings were performed while subjects repeated the vowel /e/ and vocal signals were altered in real-time using a digital effects processor to introduce a pitch-shift, presented back to subjects using headphones. Recordings were analyzed to determine pitch changes following the pitch-shifted feedback, and results compared to the magnitude of the shift as well as patient demographics. RESULTS: Consistent with previous results, CI patients' voices had higher pitches with their implant turned off, a change explainable by increases in vocal loudness without the CI. CI patients rapidly compensated for pitch-shifted feedback by changing their vocal pitch, but only for larger shifts. Considerable inter-subject variability was present, and weakly correlated with the duration of implant experience and implant sound thresholds. CONCLUSIONS: CI patients, like normal hearing individuals, are capable of real-time feedback-dependent control of their vocal pitch. However, CI patients are less sensitive to small feedback changes, possibly a result of courser CI frequency precision, and may explain poorer than normal vocal control in these patients. LEVEL OF EVIDENCE: Level 3b.

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Published In

Laryngoscope Investig Otolaryngol

DOI

ISSN

2378-8038

Publication Date

December 2020

Volume

5

Issue

6

Start / End Page

1156 / 1162

Location

United States
 

Citation

APA
Chicago
ICMJE
MLA
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Gautam, A., Brant, J. A., Ruckenstein, M. J., & Eliades, S. J. (2020). Real-time feedback control of voice in cochlear implant recipients. Laryngoscope Investig Otolaryngol, 5(6), 1156–1162. https://doi.org/10.1002/lio2.481
Gautam, Anirudh, Jason A. Brant, Michael J. Ruckenstein, and Steven J. Eliades. “Real-time feedback control of voice in cochlear implant recipients.Laryngoscope Investig Otolaryngol 5, no. 6 (December 2020): 1156–62. https://doi.org/10.1002/lio2.481.
Gautam A, Brant JA, Ruckenstein MJ, Eliades SJ. Real-time feedback control of voice in cochlear implant recipients. Laryngoscope Investig Otolaryngol. 2020 Dec;5(6):1156–62.
Gautam, Anirudh, et al. “Real-time feedback control of voice in cochlear implant recipients.Laryngoscope Investig Otolaryngol, vol. 5, no. 6, Dec. 2020, pp. 1156–62. Pubmed, doi:10.1002/lio2.481.
Gautam A, Brant JA, Ruckenstein MJ, Eliades SJ. Real-time feedback control of voice in cochlear implant recipients. Laryngoscope Investig Otolaryngol. 2020 Dec;5(6):1156–1162.
Journal cover image

Published In

Laryngoscope Investig Otolaryngol

DOI

ISSN

2378-8038

Publication Date

December 2020

Volume

5

Issue

6

Start / End Page

1156 / 1162

Location

United States