Multirate cochlear stimulation strategy and apparatus

Details Multirate cochlear stimulation strategy and apparatus Multirate cochlear stimulation strategy and apparatus

A - Human Necessities

61

F

A61F 11/04 (2006.01) A61N 1/36 (2006.01) H04R 25/00 (2006.01)

Patent

CA 2373538

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 (35), each channel is processed to determine amplitude (37) and to estimate the period of the signal in that channel (39). The amplitude and period information is used to determine which electrode is stimulated, and the timing of that stimulation.

L'invention concerne une méthode de traitement améliorée permettant d'effectuer une stimulation à plusieurs vitesses de différentes électrodes faisant partie d'un implant cochléaire à électrodes multiples. Cette méthode consiste notamment à traiter un signal entrant par l'intermédiaire d'un ensemble filtre (35), chaque voie étant traitée de manière à calculer l'amplitude (37) et à estimer la périodicité de ce signal sur cette voie (39). Cette méthode consiste enfin à utiliser ces informations concernant l'amplitude et la périodicité pour savoir quelle électrode est stimulée, et pour connaître la fréquence de cette stimulation.

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