Evaluation of a non-linear spectral subtraction noise suppression scheme in cochlear implant users
Evaluation of a non-linear spectral subtraction noise suppression scheme in cochlear implant users
The aim of the study was to determine benefit to speech recognition in noise by adult cochlear implant users with the non-linear spectral subtraction (NSS) noise suppression strategy. Users of the Nucleus 22 or Nucleus 24 cochlear implant systems were tested with sentence materials combined with stationary noise at +5 and +10 dB signal to noise ratio (SNR), with and without NSS processing applied offline. Sentence scores were significantly higher with NSS processing, for both SNRs. The effect was greater at +5 dB SNR (12% improvement with NSS) than at +10 dB SNR (5% improvement with NSS). These results are promising and suggest that online implementation of NSS as part of cochlear implant processors has the potential to yield benefits for speech recognition in noise
193-196
Verschuur, Carl
5e15ee1c-3a44-4dbe-ad43-ec3b50111e41
Wahat, Nor Hanzia Abdul
0f419127-b0eb-47ea-b732-c8117ed86fbd
2006
Verschuur, Carl
5e15ee1c-3a44-4dbe-ad43-ec3b50111e41
Wahat, Nor Hanzia Abdul
0f419127-b0eb-47ea-b732-c8117ed86fbd
Verschuur, Carl, Lutman, Mark and Wahat, Nor Hanzia Abdul
(2006)
Evaluation of a non-linear spectral subtraction noise suppression scheme in cochlear implant users.
Cochlear Implants International, 7 (4), .
(doi:10.1002/cii.318).
Abstract
The aim of the study was to determine benefit to speech recognition in noise by adult cochlear implant users with the non-linear spectral subtraction (NSS) noise suppression strategy. Users of the Nucleus 22 or Nucleus 24 cochlear implant systems were tested with sentence materials combined with stationary noise at +5 and +10 dB signal to noise ratio (SNR), with and without NSS processing applied offline. Sentence scores were significantly higher with NSS processing, for both SNRs. The effect was greater at +5 dB SNR (12% improvement with NSS) than at +10 dB SNR (5% improvement with NSS). These results are promising and suggest that online implementation of NSS as part of cochlear implant processors has the potential to yield benefits for speech recognition in noise
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Published date: 2006
Organisations:
Human Sciences Group
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Local EPrints ID: 45686
URI: http://eprints.soton.ac.uk/id/eprint/45686
ISSN: 1467-0100
PURE UUID: bf474f2d-47d3-4650-8605-c12b202ee42c
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Date deposited: 17 Apr 2007
Last modified: 15 Mar 2024 09:12
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Author:
Mark Lutman
Author:
Nor Hanzia Abdul Wahat
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