A Sound Processor for Cochlear Implant Using a Simple Dual Path Nonlinear Model of Basilar Membrane
Joint Authors
Choi, Sung Jin
Kim, Jin Ho
Kim, Kyung Hwan
Source
Computational and Mathematical Methods in Medicine
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-04-17
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
We propose a new active nonlinear model of the frequency response of the basilar membrane in biological cochlea called the simple dual path nonlinear (SDPN) model and a novel sound processing strategy for cochlear implants (CIs) based upon this model.
The SDPN model was developed to utilize the advantages of the level-dependent frequency response characteristics of the basilar membrane for robust formant representation under noisy conditions.
In comparison to the dual resonance nonlinear model (DRNL) which was previously proposed as an active nonlinear model of the basilar membrane, the SDPN model can reproduce similar level-dependent frequency responses with a much simpler structure and is thus better suited for incorporation into CI sound processors.
By the analysis of dominant frequency component, it was confirmed that the formants of speech are more robustly represented after frequency decomposition by the nonlinear filterbank using SDPN, compared to a linear bandpass filter array which is used in conventional strategies.
Acoustic simulation and hearing experiments in subjects with normal hearing showed that the proposed strategy results in better syllable recognition under speech-shaped noise compared to the conventional strategy based on fixed linear bandpass filters.
American Psychological Association (APA)
Kim, Kyung Hwan& Choi, Sung Jin& Kim, Jin Ho. 2013. A Sound Processor for Cochlear Implant Using a Simple Dual Path Nonlinear Model of Basilar Membrane. Computational and Mathematical Methods in Medicine،Vol. 2013, no. 2013, pp.1-11.
https://search.emarefa.net/detail/BIM-450018
Modern Language Association (MLA)
Kim, Kyung Hwan…[et al.]. A Sound Processor for Cochlear Implant Using a Simple Dual Path Nonlinear Model of Basilar Membrane. Computational and Mathematical Methods in Medicine No. 2013 (2013), pp.1-11.
https://search.emarefa.net/detail/BIM-450018
American Medical Association (AMA)
Kim, Kyung Hwan& Choi, Sung Jin& Kim, Jin Ho. A Sound Processor for Cochlear Implant Using a Simple Dual Path Nonlinear Model of Basilar Membrane. Computational and Mathematical Methods in Medicine. 2013. Vol. 2013, no. 2013, pp.1-11.
https://search.emarefa.net/detail/BIM-450018
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-450018