Cochlear Limited

Robert Fearn

Paul Michael Carter

Simon Geoffrey Parker

Niki Frampton

Joe Wolfe

Joe Wolf

A cochlear implant system in which information about the periodicity of a received audio signal in each filter channel is used as a factor in determining the rate of stimulation applied to a tonotopically placed electrode corresponding to the relevant filter channel. As such, the stimulation rate for each electrode is related to the periodicity of the signal in the filter channel corresponding to that electrode. This may allow for improved perception of pitch by the implant recipient.

Multirate cochlear stimulation strategy and apparatus

An improved processing approach is disclosed in order to allow for different rates of stimulation to be used for different electrodes in a multi-electrode cochlear implant. When the incoming signal is processed by filter array (), each channel is processed to determine amplitude () and to estimate the period of the signal in that channel (). The amplitude and period information is used to determine which electrode is stimulated, and the timing of that stimulation.

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Maroubra, Australia

Robert Fearn