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A FPGA Implementation of the CAR-FAC Cochlear Model
This paper presents a digital implementation of the Cascade of Asymmetric Resonators with Fast-Acting Compression (CAR-FAC) cochlear model. The CAR part simulates the basilar membrane's (BM) response to sound. The FAC part models the outer hair cell (OHC), the inner hair cell (IHC), and the med...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5902704/ https://www.ncbi.nlm.nih.gov/pubmed/29692700 http://dx.doi.org/10.3389/fnins.2018.00198 |
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author | Xu, Ying Thakur, Chetan S. Singh, Ram K. Hamilton, Tara Julia Wang, Runchun M. van Schaik, André |
author_facet | Xu, Ying Thakur, Chetan S. Singh, Ram K. Hamilton, Tara Julia Wang, Runchun M. van Schaik, André |
author_sort | Xu, Ying |
collection | PubMed |
description | This paper presents a digital implementation of the Cascade of Asymmetric Resonators with Fast-Acting Compression (CAR-FAC) cochlear model. The CAR part simulates the basilar membrane's (BM) response to sound. The FAC part models the outer hair cell (OHC), the inner hair cell (IHC), and the medial olivocochlear efferent system functions. The FAC feeds back to the CAR by moving the poles and zeros of the CAR resonators automatically. We have implemented a 70-section, 44.1 kHz sampling rate CAR-FAC system on an Altera Cyclone V Field Programmable Gate Array (FPGA) with 18% ALM utilization by using time-multiplexing and pipeline parallelizing techniques and present measurement results here. The fully digital reconfigurable CAR-FAC system is stable, scalable, easy to use, and provides an excellent input stage to more complex machine hearing tasks such as sound localization, sound segregation, speech recognition, and so on. |
format | Online Article Text |
id | pubmed-5902704 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-59027042018-04-24 A FPGA Implementation of the CAR-FAC Cochlear Model Xu, Ying Thakur, Chetan S. Singh, Ram K. Hamilton, Tara Julia Wang, Runchun M. van Schaik, André Front Neurosci Neuroscience This paper presents a digital implementation of the Cascade of Asymmetric Resonators with Fast-Acting Compression (CAR-FAC) cochlear model. The CAR part simulates the basilar membrane's (BM) response to sound. The FAC part models the outer hair cell (OHC), the inner hair cell (IHC), and the medial olivocochlear efferent system functions. The FAC feeds back to the CAR by moving the poles and zeros of the CAR resonators automatically. We have implemented a 70-section, 44.1 kHz sampling rate CAR-FAC system on an Altera Cyclone V Field Programmable Gate Array (FPGA) with 18% ALM utilization by using time-multiplexing and pipeline parallelizing techniques and present measurement results here. The fully digital reconfigurable CAR-FAC system is stable, scalable, easy to use, and provides an excellent input stage to more complex machine hearing tasks such as sound localization, sound segregation, speech recognition, and so on. Frontiers Media S.A. 2018-04-10 /pmc/articles/PMC5902704/ /pubmed/29692700 http://dx.doi.org/10.3389/fnins.2018.00198 Text en Copyright © 2018 Xu, Thakur, Singh, Hamilton, Wang and van Schaik. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Neuroscience Xu, Ying Thakur, Chetan S. Singh, Ram K. Hamilton, Tara Julia Wang, Runchun M. van Schaik, André A FPGA Implementation of the CAR-FAC Cochlear Model |
title | A FPGA Implementation of the CAR-FAC Cochlear Model |
title_full | A FPGA Implementation of the CAR-FAC Cochlear Model |
title_fullStr | A FPGA Implementation of the CAR-FAC Cochlear Model |
title_full_unstemmed | A FPGA Implementation of the CAR-FAC Cochlear Model |
title_short | A FPGA Implementation of the CAR-FAC Cochlear Model |
title_sort | fpga implementation of the car-fac cochlear model |
topic | Neuroscience |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5902704/ https://www.ncbi.nlm.nih.gov/pubmed/29692700 http://dx.doi.org/10.3389/fnins.2018.00198 |
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