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Modelling Cochlear Echoes: The Influence of Irregularities in Frequency Mapping on Summed Cochlear Activity

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Mechanics of Hearing

Abstract

“Cochlear echoes” occur in restricted frequency bands specific to each ear, with a long peak latency. A computer simulation has been developed based on basilar membrane vibration amplitude and phase followed by a “second filter” process. The vector sum of the second filter outputs, representing gross cochlear activity, is very small for a smoothly changing basilar membrane impedance and regular tonotopic mapping of the second filters. However, any small irregularity in either of these functions leads to a greatly enhanced response in the corresponding frequency region, which simulates the bandwidth, latency, and other features of cochlear echoes.

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© 1983 Delft University Press, The Netherlands

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Sutton, G.J., Wilson, J.P. (1983). Modelling Cochlear Echoes: The Influence of Irregularities in Frequency Mapping on Summed Cochlear Activity. In: de Boer, E., Viergever, M.A. (eds) Mechanics of Hearing. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-6911-7_10

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  • DOI: https://doi.org/10.1007/978-94-009-6911-7_10

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-009-6913-1

  • Online ISBN: 978-94-009-6911-7

  • eBook Packages: Springer Book Archive

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