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Design of a spike event coded RGT microphone for neuromorphic auditory systems

Design of a spike event coded RGT microphone for neuromorphic auditory systems
Design of a spike event coded RGT microphone for neuromorphic auditory systems
This paper presents the design and simulation results of a silicon cochlea system that has closely similar behavior as the real cochlea. A cochlea filter-bank based on the improved three-stage filter cascade structure is used to model the frequency decomposition function of the basilar membrane; a filter tuning block is designed to model the adaptive response of the cochlea; besides, an asynchronous event-triggered spike codec is employed as the system interface with bank-end spiking neural networks. As shown in the simulation results, the system has biologically faithful frequency response, impulse response, and active adaptation behavior; also the system outputs multiple band-pass channels of spikes from which the original sound input can be recovered. The proposed silicon cochlea is feasible for analog VLSI implementation so that it not only emulates the way that sounds are preprocessed in human ears but also is able match the compact physical size of a real cochlea.
2465-2468
Koickal, Thomas Jacob
ca8588e6-32a5-4d70-8068-0a17178a5cc8
Latif, Rhonira
f9e09486-9f80-41ce-bf05-8f54e3f94154
Gouveia, Luiz
999da2d5-38a0-4384-9950-591d7b89714a
Mastropaolo, E.
b6991cbf-7da3-4a8b-9a4d-cddab941727b
Wang, Shiwei
97433cb6-7752-4c68-89f8-933f233d8642
Hamilton, Alister
248e45ad-b658-4af3-9bdb-b09caeae9238
Cheung, Rebecca
331f20bf-d60d-42ba-90ad-82a6cb16af30
Newton, Michael
31ca3eca-6b7a-41bf-995d-2f1a2642f9fe
Smith, Leslie S.
cd83099c-eee3-461d-8989-df88d91dfc3d
Koickal, Thomas Jacob
ca8588e6-32a5-4d70-8068-0a17178a5cc8
Latif, Rhonira
f9e09486-9f80-41ce-bf05-8f54e3f94154
Gouveia, Luiz
999da2d5-38a0-4384-9950-591d7b89714a
Mastropaolo, E.
b6991cbf-7da3-4a8b-9a4d-cddab941727b
Wang, Shiwei
97433cb6-7752-4c68-89f8-933f233d8642
Hamilton, Alister
248e45ad-b658-4af3-9bdb-b09caeae9238
Cheung, Rebecca
331f20bf-d60d-42ba-90ad-82a6cb16af30
Newton, Michael
31ca3eca-6b7a-41bf-995d-2f1a2642f9fe
Smith, Leslie S.
cd83099c-eee3-461d-8989-df88d91dfc3d

Koickal, Thomas Jacob, Latif, Rhonira, Gouveia, Luiz, Mastropaolo, E., Wang, Shiwei, Hamilton, Alister, Cheung, Rebecca, Newton, Michael and Smith, Leslie S. (2011) Design of a spike event coded RGT microphone for neuromorphic auditory systems. 2011 IEEE International Symposium on Circuits and Systems (ISCAS), , Rio de Janeiro, Brazil. 15 - 19 May 2011. pp. 2465-2468 . (doi:10.1109/ISCAS.2011.5938103).

Record type: Conference or Workshop Item (Paper)

Abstract

This paper presents the design and simulation results of a silicon cochlea system that has closely similar behavior as the real cochlea. A cochlea filter-bank based on the improved three-stage filter cascade structure is used to model the frequency decomposition function of the basilar membrane; a filter tuning block is designed to model the adaptive response of the cochlea; besides, an asynchronous event-triggered spike codec is employed as the system interface with bank-end spiking neural networks. As shown in the simulation results, the system has biologically faithful frequency response, impulse response, and active adaptation behavior; also the system outputs multiple band-pass channels of spikes from which the original sound input can be recovered. The proposed silicon cochlea is feasible for analog VLSI implementation so that it not only emulates the way that sounds are preprocessed in human ears but also is able match the compact physical size of a real cochlea.

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More information

Published date: May 2011
Venue - Dates: 2011 IEEE International Symposium on Circuits and Systems (ISCAS), , Rio de Janeiro, Brazil, 2011-05-15 - 2011-05-19

Identifiers

Local EPrints ID: 445900
URI: http://eprints.soton.ac.uk/id/eprint/445900
PURE UUID: 5e8beabb-6a5e-46d0-805e-0efdeb55e998
ORCID for Shiwei Wang: ORCID iD orcid.org/0000-0002-5450-2108

Catalogue record

Date deposited: 13 Jan 2021 17:31
Last modified: 07 Sep 2021 02:04

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Contributors

Author: Thomas Jacob Koickal
Author: Rhonira Latif
Author: Luiz Gouveia
Author: E. Mastropaolo
Author: Shiwei Wang ORCID iD
Author: Alister Hamilton
Author: Rebecca Cheung
Author: Michael Newton
Author: Leslie S. Smith

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