Publication

Discrimination of Voice Pitch and Vocal-Tract Length in Cochlear Implant Users

Gaudrain, E. & Başkent, D., Mar-2018, In : Ear and hearing. 39, 2, p. 226-237 12 p.

Research output: Contribution to journalArticleAcademicpeer-review

APA

Gaudrain, E., & Başkent, D. (2018). Discrimination of Voice Pitch and Vocal-Tract Length in Cochlear Implant Users. Ear and hearing, 39(2), 226-237. https://doi.org/10.1097/AUD.0000000000000480

Author

Gaudrain, Etienne ; Başkent, Deniz. / Discrimination of Voice Pitch and Vocal-Tract Length in Cochlear Implant Users. In: Ear and hearing. 2018 ; Vol. 39, No. 2. pp. 226-237.

Harvard

Gaudrain, E & Başkent, D 2018, 'Discrimination of Voice Pitch and Vocal-Tract Length in Cochlear Implant Users', Ear and hearing, vol. 39, no. 2, pp. 226-237. https://doi.org/10.1097/AUD.0000000000000480

Standard

Discrimination of Voice Pitch and Vocal-Tract Length in Cochlear Implant Users. / Gaudrain, Etienne; Başkent, Deniz.

In: Ear and hearing, Vol. 39, No. 2, 03.2018, p. 226-237.

Research output: Contribution to journalArticleAcademicpeer-review

Vancouver

Gaudrain E, Başkent D. Discrimination of Voice Pitch and Vocal-Tract Length in Cochlear Implant Users. Ear and hearing. 2018 Mar;39(2):226-237. https://doi.org/10.1097/AUD.0000000000000480


BibTeX

@article{4b8624e9fa684d2984dcc09a618ad9f4,
title = "Discrimination of Voice Pitch and Vocal-Tract Length in Cochlear Implant Users",
abstract = "OBJECTIVES: When listening to two competing speakers, normal-hearing (NH) listeners can take advantage of voice differences between the speakers. Users of cochlear implants (CIs) have difficulty in perceiving speech on speech. Previous literature has indicated sensitivity to voice pitch (related to fundamental frequency, F0) to be poor among implant users, while sensitivity to vocal-tract length (VTL; related to the height of the speaker and formant frequencies), the other principal voice characteristic, has not been directly investigated in CIs. A few recent studies evaluated F0 and VTL perception indirectly, through voice gender categorization, which relies on perception of both voice cues. These studies revealed that, contrary to prior literature, CI users seem to rely exclusively on F0 while not utilizing VTL to perform this task. The objective of the present study was to directly and systematically assess raw sensitivity to F0 and VTL differences in CI users to define the extent of the deficit in voice perception.DESIGN: The just-noticeable differences (JNDs) for F0 and VTL were measured in 11 CI listeners using triplets of consonant-vowel syllables in an adaptive three-alternative forced choice method.RESULTS: The results showed that while NH listeners had average JNDs of 1.95 and 1.73 semitones (st) for F0 and VTL, respectively, CI listeners showed JNDs of 9.19 and 7.19 st. These JNDs correspond to differences of 70{\%} in F0 and 52{\%} in VTL. For comparison to the natural range of voices in the population, the F0 JND in CIs remains smaller than the typical male-female F0 difference. However, the average VTL JND in CIs is about twice as large as the typical male-female VTL difference.CONCLUSIONS: These findings, thus, directly confirm that CI listeners do not seem to have sufficient access to VTL cues, likely as a result of limited spectral resolution, and, hence, that CI listeners' voice perception deficit goes beyond poor perception of F0. These results provide a potential common explanation not only for a number of deficits observed in CI listeners, such as voice identification and gender categorization, but also for competing speech perception.",
keywords = "Journal Article",
author = "Etienne Gaudrain and Deniz Başkent",
year = "2018",
month = "3",
doi = "10.1097/AUD.0000000000000480",
language = "English",
volume = "39",
pages = "226--237",
journal = "Ear and hearing",
issn = "0196-0202",
publisher = "LIPPINCOTT WILLIAMS & WILKINS",
number = "2",

}

RIS

TY - JOUR

T1 - Discrimination of Voice Pitch and Vocal-Tract Length in Cochlear Implant Users

AU - Gaudrain, Etienne

AU - Başkent, Deniz

PY - 2018/3

Y1 - 2018/3

N2 - OBJECTIVES: When listening to two competing speakers, normal-hearing (NH) listeners can take advantage of voice differences between the speakers. Users of cochlear implants (CIs) have difficulty in perceiving speech on speech. Previous literature has indicated sensitivity to voice pitch (related to fundamental frequency, F0) to be poor among implant users, while sensitivity to vocal-tract length (VTL; related to the height of the speaker and formant frequencies), the other principal voice characteristic, has not been directly investigated in CIs. A few recent studies evaluated F0 and VTL perception indirectly, through voice gender categorization, which relies on perception of both voice cues. These studies revealed that, contrary to prior literature, CI users seem to rely exclusively on F0 while not utilizing VTL to perform this task. The objective of the present study was to directly and systematically assess raw sensitivity to F0 and VTL differences in CI users to define the extent of the deficit in voice perception.DESIGN: The just-noticeable differences (JNDs) for F0 and VTL were measured in 11 CI listeners using triplets of consonant-vowel syllables in an adaptive three-alternative forced choice method.RESULTS: The results showed that while NH listeners had average JNDs of 1.95 and 1.73 semitones (st) for F0 and VTL, respectively, CI listeners showed JNDs of 9.19 and 7.19 st. These JNDs correspond to differences of 70% in F0 and 52% in VTL. For comparison to the natural range of voices in the population, the F0 JND in CIs remains smaller than the typical male-female F0 difference. However, the average VTL JND in CIs is about twice as large as the typical male-female VTL difference.CONCLUSIONS: These findings, thus, directly confirm that CI listeners do not seem to have sufficient access to VTL cues, likely as a result of limited spectral resolution, and, hence, that CI listeners' voice perception deficit goes beyond poor perception of F0. These results provide a potential common explanation not only for a number of deficits observed in CI listeners, such as voice identification and gender categorization, but also for competing speech perception.

AB - OBJECTIVES: When listening to two competing speakers, normal-hearing (NH) listeners can take advantage of voice differences between the speakers. Users of cochlear implants (CIs) have difficulty in perceiving speech on speech. Previous literature has indicated sensitivity to voice pitch (related to fundamental frequency, F0) to be poor among implant users, while sensitivity to vocal-tract length (VTL; related to the height of the speaker and formant frequencies), the other principal voice characteristic, has not been directly investigated in CIs. A few recent studies evaluated F0 and VTL perception indirectly, through voice gender categorization, which relies on perception of both voice cues. These studies revealed that, contrary to prior literature, CI users seem to rely exclusively on F0 while not utilizing VTL to perform this task. The objective of the present study was to directly and systematically assess raw sensitivity to F0 and VTL differences in CI users to define the extent of the deficit in voice perception.DESIGN: The just-noticeable differences (JNDs) for F0 and VTL were measured in 11 CI listeners using triplets of consonant-vowel syllables in an adaptive three-alternative forced choice method.RESULTS: The results showed that while NH listeners had average JNDs of 1.95 and 1.73 semitones (st) for F0 and VTL, respectively, CI listeners showed JNDs of 9.19 and 7.19 st. These JNDs correspond to differences of 70% in F0 and 52% in VTL. For comparison to the natural range of voices in the population, the F0 JND in CIs remains smaller than the typical male-female F0 difference. However, the average VTL JND in CIs is about twice as large as the typical male-female VTL difference.CONCLUSIONS: These findings, thus, directly confirm that CI listeners do not seem to have sufficient access to VTL cues, likely as a result of limited spectral resolution, and, hence, that CI listeners' voice perception deficit goes beyond poor perception of F0. These results provide a potential common explanation not only for a number of deficits observed in CI listeners, such as voice identification and gender categorization, but also for competing speech perception.

KW - Journal Article

U2 - 10.1097/AUD.0000000000000480

DO - 10.1097/AUD.0000000000000480

M3 - Article

C2 - 28799983

VL - 39

SP - 226

EP - 237

JO - Ear and hearing

JF - Ear and hearing

SN - 0196-0202

IS - 2

ER -

ID: 47642718