Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Cochlear implant simulator with independent representation of the full spiral ganglion

Grange, Jacques A ORCID:, Culling, John F. ORCID:, Harris, Naomi S. L. and Bergfeld, Sven 2017. Cochlear implant simulator with independent representation of the full spiral ganglion. Journal of the Acoustical Society of America 142 (5) , EL484. 10.1121/1.5009602

[thumbnail of Grange et al. JASA 2017.pdf]
PDF - Published Version
Available under License Creative Commons Attribution.

Download (273kB) | Preview


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.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Psychology
Subjects: B Philosophy. Psychology. Religion > BF Psychology
R Medicine > RF Otorhinolaryngology
Publisher: Acoustical Society of America
ISSN: 0001-4966
Funders: Oticon Fonden
Date of First Compliant Deposit: 29 November 2017
Date of Acceptance: 17 October 2017
Last Modified: 21 Jan 2024 16:06

Citation Data

Cited 23 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item


Downloads per month over past year

View more statistics