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http://dx.doi.org/10.9718/JBER.2007.28.5.694

Performance Evaluation of Speech Onset Representation Characteristic of Cochlear Implants Speech Processor using Spike Train Decoding  

Kim, Doo-Hee (Department of Biomedical Engineering, College of Health Science, Yonsei University)
Kim, Jin-Ho (Department of Biomedical Engineering, College of Health Science, Yonsei University)
Kim, Kyung-Hwan (Department of Biomedical Engineering, College of Health Science, Yonsei University)
Publication Information
Journal of Biomedical Engineering Research / v.28, no.5, 2007 , pp. 694-702 More about this Journal
Abstract
The adaptation effect originating from the chemical synapse between auditory nerve and inner hair cell gives advantage in accurate representation of temporal cues of incoming speech such as speech onset. Thus it is expected that the modification of conventional speech processing strategies of cochlear implant(CI) by incorporating the adaptation effect will result in considerable improvement of speech perception performance such as consonant perception score. Our purpose in this paper was to evaluate our new CI speech processing strategy incorporating the adaptation effect by the observation of auditory nerve responses. By classifying the presence or absence of speech from the auditory nerve responses, i. e. spike trains, we could quantitatively compare speech onset detection performances of conventional and improved strategies. We could verify the effectiveness of the adaptation effect in improving the speech onset representation characteristics.
Keywords
Cochlear implant; Speech processing strategy; Speech Onset; Neural spike train decoding;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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