Speech intelligibility as a function of the number of channels of stimulation for normal-hearing listeners and patients with cochlear implants.
Am J Otol
; 18(6 Suppl): S113-4, 1997 Nov.
Article
in En
| MEDLINE
| ID: mdl-9391623
ABSTRACT
OBJECTIVE:
One goal was to determine for normal-hearing listeners the number of channels of stimulation necessary to achieve a high level of speech understanding. The second goal was to determine whether patients with a six-channel cochlear implant could achieve the same level of speech understanding as normal-hearing subjects listening to speech processed through six channels.METHODS:
Speech signals were processed, for normal-hearing listeners, either in the manner of cochlear-implant processors with 2-9 fixed channels, or in the manner of a processor which picked, on each update cycle, 6 of 16 channels.RESULTS:
For the most difficult test material eight fixed channels were necessary to achieve the level of performance achieved with the "n of m" processor. Some cochlear implant patients with a six-channel continuous interleaved sampling processor achieved the same level of performance as normal-hearing subjects listening to speech via six channels.CONCLUSIONS:
A signal processor for cochlear implants with eight channels should produce the same level of intelligibility as a processor with many more channels. Processors using continuous interleaved sampling technology can provide a signal which results in the same level of speech understanding as normal, acoustic stimulation.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Speech Perception
/
Cochlear Implantation
/
Deafness
/
Hearing
Limits:
Humans
Language:
En
Journal:
Am J Otol
Year:
1997
Document type:
Article
Affiliation country:
United States