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Efficient time-domain simulation of nonlinear, state-space, transmission-line models of the cochlea

Efficient time-domain simulation of nonlinear, state-space, transmission-line models of the cochlea
Efficient time-domain simulation of nonlinear, state-space, transmission-line models of the cochlea
Nonlinear models of the cochlea are best implemented in the time domain, but their computational demands usually limit the duration of the simulations that can reasonably be performed. This letter presents a modified state space method and its application to an example nonlinear one-dimensional transmission-line cochlear model. The sparsity pattern of the individual matrices for this alternative formulation allows the use of significantly faster numerical algorithms. Combined with a more efficient implementation of the saturating nonlinearity, the computational speed of this modified state space method is more than 40 times faster than that of the original formulation.
0001-4966
3559-3562
Pan, Shuokai
c132dd25-649c-484f-a905-5cc6156477d0
Elliott, Stephen
721dc55c-8c3e-4895-b9c4-82f62abd3567
Lineton, Ben
1ace4e96-34da-4fc4-bc17-a1d82b2ba0e2
Teal, Paul
204fa493-a31e-40df-bb53-c5f478198b43
Pan, Shuokai
c132dd25-649c-484f-a905-5cc6156477d0
Elliott, Stephen
721dc55c-8c3e-4895-b9c4-82f62abd3567
Lineton, Ben
1ace4e96-34da-4fc4-bc17-a1d82b2ba0e2
Teal, Paul
204fa493-a31e-40df-bb53-c5f478198b43

Pan, Shuokai, Elliott, Stephen, Lineton, Ben and Teal, Paul (2015) Efficient time-domain simulation of nonlinear, state-space, transmission-line models of the cochlea Journal of the Acoustical Society of America, 137, (6), pp. 3559-3562. (doi:10.1121/1.4921550). (PMID:26093443).

Record type: Article

Abstract

Nonlinear models of the cochlea are best implemented in the time domain, but their computational demands usually limit the duration of the simulations that can reasonably be performed. This letter presents a modified state space method and its application to an example nonlinear one-dimensional transmission-line cochlear model. The sparsity pattern of the individual matrices for this alternative formulation allows the use of significantly faster numerical algorithms. Combined with a more efficient implementation of the saturating nonlinearity, the computational speed of this modified state space method is more than 40 times faster than that of the original formulation.

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Accepted/In Press date: 8 May 2015
Published date: June 2015
Organisations: Human Sciences Group, Signal Processing & Control Grp

Identifiers

Local EPrints ID: 382240
URI: http://eprints.soton.ac.uk/id/eprint/382240
ISSN: 0001-4966
PURE UUID: 4bb6efde-8a94-4708-bc6d-ace19d36f4ee

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Date deposited: 15 Oct 2015 10:33
Last modified: 17 Jul 2017 20:22

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