Cochlear implant simulator with independent representation of the full spiral ganglion | Zendy

Jacques A. Grange | Zendy; John F. Culling | Zendy; Naomi S. L. Harris | Zendy; Sven Bergfeld | Zendy

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Cochlear implant simulator with independent representation of the full spiral ganglion

Author(s) -

Jacques A. Grange,

John F. Culling,

Naomi S. L. Harris,

Sven Bergfeld

Publication year - 2017

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 - 10.1121/1.5009602

Subject(s) - spiral ganglion , spiral (railway) , cochlear implant , acoustics , intelligibility (philosophy) , computer science , current (fluid) , noise (video) , physics , cochlea , mathematics , audiology , artificial intelligence , medicine , mathematical analysis , philosophy , epistemology , image (mathematics) , thermodynamics

In cochlear implant simulation with vocoders, narrow-band carriers deliver the envelopes from each analysis band to the cochlear positions of the simulated electrodes. However, this approach does not faithfully represent the continuous nature of the spiral ganglion. The proposed "SPIRAL" vocoder simulates current spread by mixing all envelopes across many tonal carriers. SPIRAL demonstrated that the classic finding of reduced speech-intelligibility benefit with additional electrodes could be due to current spread. SPIRAL produced lower speech reception thresholds than an equivalent noise vocoder. These thresholds are stable for between 20 and 160 carriers.

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