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Desired sounds form tuning a complex network of nonlinear Hopf Nodes


Stoop, R; Gomez, F (2012). Desired sounds form tuning a complex network of nonlinear Hopf Nodes. In: IFAC CHAOS Conference, Cancun, Mexico, 19 June 2012 - 22 June 2012, 70-74.

Abstract

The Hopf Cochlea is hard- and software implemented model of the mammalian hearing sensor that is constructed from a series of feedforward coupled nonlinear Hopf system amplifier sections. The nonlinearity of the Hopf amplifiers removes a superposition principle among the sections. Instead, the sections couple extensively, e.g. by generating combination tones that have been shown to be essential for pitch perception. Here, we demonstrate exemplarily how such a complex network can be tuned for the dedicated amplification of a desired complex sound. Surprisingly, despite the complicated network structure of the cochlea, it is exactly the network's nonlinearity that renders the network simpler tunable than if the cochlea obeyed the superposition principle.

Abstract

The Hopf Cochlea is hard- and software implemented model of the mammalian hearing sensor that is constructed from a series of feedforward coupled nonlinear Hopf system amplifier sections. The nonlinearity of the Hopf amplifiers removes a superposition principle among the sections. Instead, the sections couple extensively, e.g. by generating combination tones that have been shown to be essential for pitch perception. Here, we demonstrate exemplarily how such a complex network can be tuned for the dedicated amplification of a desired complex sound. Surprisingly, despite the complicated network structure of the cochlea, it is exactly the network's nonlinearity that renders the network simpler tunable than if the cochlea obeyed the superposition principle.

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Additional indexing

Item Type:Conference or Workshop Item (Speech), refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Neuroinformatics
Dewey Decimal Classification:570 Life sciences; biology
Language:English
Event End Date:22 June 2012
Deposited On:28 Feb 2013 09:42
Last Modified:01 Aug 2017 07:26
Publisher:International Federation of Automatic Control
Publisher DOI:https://doi.org/10.3182/20120620-3-MX-3012.00037

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