Abstract
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.
| Language | English |
|---|---|
| Article number | 198 |
| Number of pages | 14 |
| Journal | Frontiers in Neuroscience |
| Volume | 12 |
| DOIs | |
| Publication status | Published - 10 Apr 2018 |
| Externally published | Yes |
Fingerprint
Bibliographical note
Copyright the Author(s) 2018. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.Keywords
- neuromorphic engineering
- electronic cochlea
- basilar membrane
- inner hair cell
- outer hair cell
- automatic gain control
- medial olivocochlear efferent
- FPGAs
Cite this
}
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.
In: Frontiers in Neuroscience, Vol. 12, 198, 10.04.2018.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - A FPGA implementation of the CAR-FAC cochlear model
AU - Xu, Ying
AU - Thakur, Chetan S.
AU - Singh, Ram K.
AU - Hamilton, Tara Julia
AU - Wang, Runchun M.
AU - van Schaik, André
N1 - Copyright the Author(s) 2018. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.
PY - 2018/4/10
Y1 - 2018/4/10
N2 - 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.
AB - 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.
KW - neuromorphic engineering
KW - electronic cochlea
KW - basilar membrane
KW - inner hair cell
KW - outer hair cell
KW - automatic gain control
KW - medial olivocochlear efferent
KW - FPGAs
UR - http://www.scopus.com/inward/record.url?scp=85045237652&partnerID=8YFLogxK
UR - http://purl.org/au-research/grants/arc/DP140103001
U2 - 10.3389/fnins.2018.00198
DO - 10.3389/fnins.2018.00198
M3 - Article
VL - 12
JO - Frontiers in Neuroscience
T2 - Frontiers in Neuroscience
JF - Frontiers in Neuroscience
SN - 1662-4548
M1 - 198
ER -