The discrimination of voice cues in simulations of bimodal electro-acoustic cochlear-implant hearing | Zendy

Deniz Başkent | Zendy; Annika Luckmann | Zendy; Jessy Ceha | Zendy; Étienne Gaudrain | Zendy; Terrin N. Tamati | Zendy

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The discrimination of voice cues in simulations of bimodal electro-acoustic cochlear-implant hearing

Author(s) -

Deniz Başkent,

Annika Luckmann,

Jessy Ceha,

Étienne Gaudrain,

Terrin N. Tamati

Publication year - 2018

Publication title -

the journal of the acoustical society of america

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.619

H-Index - 187

eISSN - 1520-8524

pISSN - 0001-4966

DOI - 10.1121/1.5034171

Subject(s) - formant , cochlear implant , vocal tract , acoustics , perception , audiology , noise (video) , speech perception , fundamental frequency , speech recognition , computer science , psychology , physics , vowel , medicine , neuroscience , artificial intelligence , image (mathematics)

In discriminating speakers' voices, normal-hearing individuals effectively use two vocal characteristics, vocal pitch (related to fundamental frequency, F0) and vocal-tract length (VTL, related to speaker size). Typical cochlear-implant users show poor perception of these cues. However, in implant users with low-frequency residual acoustic hearing, this bimodal electro-acoustic stimulation may provide additional voice-related cues, such as low-numbered harmonics and formants, which could improve F0/VTL perception. In acoustic noise-vocoder simulations, where added low-pass filtered speech simulated residual hearing, a strong bimodal benefit was observed for F0 perception. No bimodal benefit was observed for VTL, which seems to mainly rely on vocoder spectral resolution.

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